US 6329794

I'll search for the current status of this patent and any related appellate dockets.

US Patent 6,329,794 B1 — Analyst Summary

Sources consulted: Google Patents (https://patents.google.com/patent/[US6329794](/patent/US6329794)/en), Justia Patents, PTAB/PTACTS filings, CourtListener/Docket Alarm dockets, Law360 reporting. No CAFC 2026 docket tied specifically to the '794 patent was located (see "Appellate / 2026 docket check" below).

1. Bibliographic data

Ownership chain (recorded assignments): Hitachi, Ltd. → Hitachi Consumer Electronics Co., Ltd. (2011-10-19) → Hitachi Maxell, Ltd. (2014-09-08) → Maxell, Ltd. (2018-01-25) → Maxell Holdings, Ltd. (2021-11-29, merger) → Maxell, Ltd. (2021-12-03, change of name).

Cited prior art (3, examiner-cited): US 5,969,529 (Sharp); US 6,049,210 (Samsung); US 6,100,666 (Samsung). One non-patent citation: Research File No. 5, ACPI, POS/V Magazine (1999).

2. Abstract (as issued)

"A power supply section includes a capacity detector capable of detecting the remaining capacity in a battery and a controller issuing power consumption reduction instructions to independently operable function devices based on usage priorities thereof. This allows power consumption operations to be performed such as stopping function devices with low priorities first based on the remaining battery capacity. As a result, power to function devices with higher priorities can be maintained. Based on the remaining battery capacity, the controller controls the operations of the function devices and uses a display to show information allowing the operator to identify operable and inoperable function devices as the battery capacity drops."

3. Independent claim 1 — plain language

An information processing device (e.g., notebook PC, home appliance, wireless device) comprising:

1. At least two "function devices" with independent functions (e.g., an audio-communication module and a videophone module).
2. A power supply circuit feeding each function device, containing a battery, a capacity detector for remaining battery charge, and a controller that governs function-device operation based on that remaining charge.
3. The core limitation: when the detector finds remaining capacities NA and NB, where NA > NB, the controller issues a power-consumption reduction instruction:
   • to every device in set GA when NA is detected — GA being the devices with lower usage priority;
   • to every device in set GB when NB is detected — where GB excludes the members of GA.

In plain terms: two (or more) descending battery thresholds map to two priority-ranked groups; low-priority functions get throttled/shut off at the higher threshold, and the higher-priority functions are preserved until the lower threshold. The negative limitation ("GB is not included in GA") means the second instruction reaches a different, non-overlapping set of devices.

4. Independent claim 9 — plain language

Framed differently from claim 1, as a device with separately powered "component devices" performing different functions:

1. Component devices for different functions, each with its own corresponding power supply.
2. A battery supplying power.
3. A capacity detector for remaining battery capacity.
4. A controller that sends:
   • a first power-consumption reduction instruction to the lower-usage-priority subset of component devices when a first reference level is detected; and
   • a second power-consumption reduction instruction to the higher-usage-priority subset when a second reference level is detected, the second level being lower than the first.
5. The component-device power supplies are controlled according to those instructions.

Plain terms: this is the "staged brown-out by priority tier" claim, expressed in terms of per-component power supplies and two ordered reference levels rather than claim 1's sets GA/GB.

Dependent claims at a glance

• Claims 2, 10: the reduction instruction is an instruction to stop the device (may also be "reducing operating speed" per the spec).
• Claims 3–4: a changeover device can cut power to part/all of a function device, controller-driven, with a prior notification that power is about to be cut (the spec's "power supply cutoff warning" → "power supply cutoff permission notification" handshake).
• Claims 5–6, 11–12: usage priorities are user-settable via a function-settings procedure, with pre-set defaults if the user does not set them.
• Claims 7, 13: a reactivation feature — if a high-priority device needs another device that was stopped for low capacity, that other device is restarted (spec ¶ on FIG. 11, the operation-request signal 1202 to controller 1203).
• Claims 8, 14: a common function device shared by multiple independent functions (spec: CPU and memory) is allowed to operate to the end.

4a. Disclosure highlights

• FIG. 1 architecture: battery 102, power stabilizer/charging controller 103, changeover controllers A 104 / B 105, capacity detector 107, controller 108; FIG. 8 priority table; FIG. 9 reference-capacity → device association table.
• Additional embodiments: FIG. 6/7 — priority-based power-consumption reduction only (no changeover control), for cost/part-count-limited devices; FIG. 10 — notification device 1101 (LED or LCD) showing which function devices are enabled/disabled, possibly with "no display" meaning disabled, and optionally audio notification; FIG. 11 — the reactivation-on-request embodiment.

5. Litigation and post-grant history (as reported in the sources retrieved)

District court (asserted against ZTE): Maxell, Ltd. v. ZTE Corp. et al., No. 5:16-cv-00179 (E.D. Tex., filed Nov. 18, 2016). The '794 patent was among seven asserted patents; a jury verdict on June 29, 2018 found infringement (willful) and awarded $43.3M. ZTE's motion for summary judgment of invalidity of the '317 and '794 patents was denied; Maxell's partial SJ motion of no invalidity of claims 1–3 and 5–14 of the '794 patent was granted-in-part. The parties settled in Feb./Mar. 2019. Related: Maxell v. ZTE, 5:18-cv-00080 and 5:18-cv-00034; Maxell v. Huawei Device USA, 5:16-cv-00178.

PTAB — IPR2018-00241: petitioned by ZTE Corporation / ZTE (USA) Inc. (effective Nov. 22, 2017); result recorded as "Not Instituted – Merits" — i.e., institution denied. The '794 patent's patentability challenge on claims 1–3 and 5–14 (asserted art including U.S. 6,031,999; 5,560,022; 6,345,180; 6,360,327; and the ACPI Specification) did not produce a merits decision.

District court (asserted against Apple): Maxell, Ltd. v. Apple Inc., No. 5:19-cv-00036 (E.D. Tex., filed Mar. 15, 2019). The '794 patent was one of ten patents-in-suit; the court's Claim Construction Memorandum and Order (Dkt. 235, filed Mar. 18, 2020) addressed disputed terms. Docket entries: the '794 claims against iPads, iPods and Apple Watches were dismissed with prejudice (order signed Mar. 18, 2021), and a later entry grants a motion to dismiss without prejudice the '794 Patent. The whole case was dismissed with prejudice on settlement (final judgment Apr. 7, 2021).

PTAB — IPR2020-00199: petitioned by Apple Inc. (filed Dec. 19, 2019). Institution was granted June 19, 2020 as to claims 1–3 and 5–14 (Paper 11; panel Chung, Trock, Hudalla). The proceeding was terminated due to settlement (Paper 32, Apr. 20, 2021), with the Board stating it "has not yet decided the merits" and that the order "does not constitute a final written decision pursuant to 35 U.S.C. § 318(a)." Google Patents lists it as "Settlement." Related Apple IPRs 2020-00200, -00202, -00204 were terminated in the same order.

⚠️ Discrepancy flagged (not resolved): one PTACTS document surfaced in search carries a caption "Decision – Denying Petitioner's Request for Rehearing of Final Written Decision" and lists IPR2020-00199 / 6329794 in its case index. That is in tension with the Board's own termination order, which states no final written decision issued in IPR2020-00199. The indexed caption may belong to a different (co-filed) proceeding whose case list includes the '794 number, or to the digest's cross-reference fields. I could not confirm an FWD on the merits for the '794 patent, and I would treat any claim of a merits FWD as unverified.

5a. Appellate / CAFC 2026 docket check

I found no Court of Appeals for the Federal Circuit docket, in 2026 or otherwise, that is specifically directed to U.S. Patent 6,329,794. Given the patent's anticipated expiration on 2020-09-07 and the expiry of its enforcement life, and that both the Apple district case and the Apple IPR ended in settlement while the ZTE appeal-rights scenario closed by settlement in 2019, no live '794-specific appeal would be expected. The 2026 Maxell-related CAFC activity that surfaced instead concerns other Maxell patents:

• Samsung Electronics Co., Ltd. v. Maxell, Ltd., 26-1320 (Fed. Cir., Jan. 7, 2026)
• Maxell, Ltd. v. Samsung Electronics Co., Ltd., 26-1330 (Fed. Cir., Jan. 12, 2026)
• Docket 26-1111 (Fed. Cir., Oct. 29, 2025)
• Optoma Technology, Inc. v. Maxell, Ltd., 25-1659 (argued; forum/transfer dispute, not '794)
• Apple Inc. v. Maxell, Ltd., 21-1033 (Fed. Cir., filed Oct. 9, 2020) — per the filing that cites it, this appeal concerns the '493 patent, not '794.

Do not attribute any of the above to the '794 patent without confirming the patent-in-appeal.

6. Uncertainties to note

• Priority date: Google Patents labels 2000-05-22 as an "assumption"; JP 2000-154358 is the JP priority application and JP2001331242A is its publication. I have not independently verified JP prosecution.
• "Expired – Lifetime" / 2020-09-07: from Google Patents' legal-status field (and consistent with a 20-year term from the 2000-09-07 U.S. filing), not from a USPTO maintenance-fee or term-adjustment computation I performed. The file history shows an unusual sequence (2005 lapsed, late-fee petition granted, reinstatement), and later 4/8/12-year fee payments through 2013-05-15.
• IPR2020-00199 final outcome: settled/terminated without a merits decision per the Board's own order; the conflicting "final written decision rehearing" caption is noted above and unresolved.
• Claim-construction substance: an E.D. Tex. claim-construction order (Dkt. 235) construing terms of ten patents including the '794 patent exists, but I did not retrieve the specific constructions for '794 terms (e.g., "power consumption reduction instruction," "usage priority," "function device") — so I state no constructions.
• The E.D. Tex. '794 dismissal orders show both a with prejudice dismissal (as to iPads, iPods, Apple Watches) and a without prejudice dismissal of the '794 patent; the timeline and scope of each are from docket-entry text as surfaced in search and were not verified against the docket directly.

I'll search for litigation involving US patent 6329794 across patent litigation databases.

Let me get more specific details on the district court cases and PTAB proceedings.

Let me check the ASUS case and the 5:18-cv-00136 docket.

Litigation Involving U.S. Patent No. 6,329,794

Patent: U.S. 6,329,794 B1 — "Information processing device and method for controlling power consumption thereof"

• Application No. 09/657,151; Priority/filing: 2000-05-22; filed 2000-09-07; granted 2001-12-11
• Original assignee: Hitachi, Ltd.; current assignee: Maxell, Ltd. (via Hitachi → Hitachi Consumer Electronics → Hitachi Maxell → Maxell, Ltd. → Maxell Holdings → Maxell, Ltd.)
• Legal status: Expired – Lifetime (anticipated expiration 2020‑09‑07)
• The '794 patent is the U.S. member of the family of JP 2000‑154358 / JP 2001331242A, and the Google Patents record itself flags a "First worldwide family litigation filed."

There is known litigation and PTAB activity involving this patent. It was asserted by Maxell, Ltd. (formerly Hitachi Maxell) against smartphone/tablet makers in the Eastern District of Texas, and challenged at the PTAB by ZTE and by Apple. Below is what I can confirm, with case identifiers, from the sources retrieved. Where an identifier is uncertain I say so explicitly.

A. District Court Litigation

1. Maxell, Ltd. v. ZTE Corporation et al. — the primary '794 assertion

• Case No.: 5:16-cv-00179-RWS
• Court/Jurisdiction: U.S. District Court for the Eastern District of Texas, Texarkana Division (Judge Robert W. Schroeder III)
• Plaintiff: Maxell, Ltd. (formerly Hitachi Maxell, Ltd.)
• Defendants: ZTE Corporation and ZTE (USA) Inc.
• Filed: November 18, 2016
• '794 role: The '794 patent was one of the patents asserted against ZTE USA (alongside U.S. 6,748,317; 8,339,493; 8,736,729; 6,408,193; 6,816,491; 8,098,695). Accused products included the ZMAX 2, Axon series and ZMAX Pro.
• Outcome/Status: A Texarkana jury returned a verdict on June 29, 2018, finding ZTE USA willfully infringed seven asserted patents (including the '794 patent) and awarding Maxell $43.3 million in damages; the willfulness finding exposed ZTE to treble damages. ZTE's post‑trial motions (JMOL/new trial) were opposed by Maxell. The parties then reached a confidential settlement announced in February 2019, and the case was resolved without further trial.
  • Claim‑construction: the Court construed the '794 term "operate to the end" (claims 8 and 14) as having plain and ordinary meaning (Maxell Ltd. v. Huawei Device U.S. Inc., 297 F. Supp. 3d 668 (E.D. Tex. 2018)).
  • The '794 patent "survived IPR petitions filed by ZTE" (see PTAB section below).
• Sources: Docket Alarm case 5:16-cv-00179 (docs 49, 292); Law360 via PTACTS/USPTO; Mayer Brown/Law360 settlement report; Unified Patents litigation portal (https://portal.unifiedpatents.com/litigation/Texas%20Eastern%20District%20Court/case/5:16-cv-00179).

2. Maxell, Ltd. v. Huawei Device USA Inc. et al. — companion/consolidated case

• Case No.: 5:16-cv-00178-RWS
• Court: E.D. Tex., Texarkana Division
• Plaintiff: Maxell, Ltd.
• Defendants: Huawei Device USA Inc. and Huawei Device Co., Ltd.
• Filed: November 18, 2016 (consolidated with 5:16-cv-00179 for pretrial purposes)
• '794 role: Caution — In the consolidated claim‑construction order, the '794 patent was listed among the patents asserted against ZTE USA (not Huawei); the Huawei‑asserted patents were different (e.g., '443, '139, '440, '292, '517, '901, '760, '438). The '794 patent is nonetheless referenced in this litigation family. The case was settled (confidential) in February 2019, days before a scheduled hearing.
• Sources: Claim Construction Memorandum and Order, 5:16-cv-00179-RWS, Doc. 49 (Mar. 19, 2018) (consolidating 5:16-cv-00178 and -00179); Law360 report on the Huawei settlement (Maxell, Huawei Reach Terms To End Smartphone Patent Suit, Feb. 21, 2019).

3. Maxell, Ltd. v. Apple Inc.

• Case No.: 5:19-cv-00036-RWS
• Court: E.D. Tex., Texarkana Division (Judge Schroeder)
• Plaintiff: Maxell, Ltd.
• Defendant: Apple Inc.
• Filed: March 15, 2019
• '794 role: The '794 patent was one of ten asserted patents (with 6,748,317; 6,580,999; 6,430,498; 8,339,493; 6,408,193; 6,928,306; 10,084,991; 7,116,438; 10,212,586). Maxell accused Apple's "Low Power Mode" on iPhone/iPad/iPod Touch of infringing the '794 patent. Apple moved for partial summary judgment of 35 U.S.C. § 101 / Alice ineligibility as to the '794 and '306 patents.
• Outcome/Status:
  • On March 22, 2021, the Court granted Maxell's unopposed motion and dismissed the '794 patent claims WITHOUT PREJUDICE. The order bars Maxell from instituting any action/proceeding against Apple on the '794 patent (and from using any Apple product to satisfy '794 claims against any party) until the conclusion of IPR2020‑00199, including appeals.
  • The overall case settled in March 2021 (settlement announced at jury‑selection stage; terms undisclosed); the parallel PTAB proceedings were terminated.
• Sources: Amended Complaint (Doc. 111); Apple's SJ motion (Doc. 379, Jul. 2, 2020); Maxell's Unopposed Motion to Dismiss the '794 Patent (Doc. 679, Mar. 19, 2021) and Order (Doc. 685, Mar. 22, 2021); Law360 (Maxell Settles Patent Suit Against Apple Over Mobile Tech, Mar. 23, 2021).

4. Maxell, Ltd. v. ZTE Corp. (bifurcated / second ZTE actions)

• Case Nos. identified: 5:18-cv-00080 (bifurcated ZTE Corp. claims from the '179 case) and 5:18-cv-00034 (E.D. Tex., filed March 2, 2018).
• The PTAB's Apple institution decision lists these as proceedings "related to the '794 patent." The February 2019 settlement also resolved the bifurcated ZTE Corp. case. Note: contemporaneous reporting describes Maxell's second ZTE suit (over 10 additional patents — telecom, streaming, camera, video‑phone/calling) as involving patents "other than the ones in the current case," so the '794 patent's direct presence in 5:18-cv-00034/00080 is not confirmed; I flag this as a related, not confirmed, '794 assertion.
• Source: Apple IPR2020‑00199 Institution Decision (Paper 11, June 19, 2020); Law360 settlement reports.

5. Additional E.D. Tex. case listed on the patent record

• The Google Patents litigation data for US 6,329,794 lists a third Eastern District of Texas case, 5:18-cv-00136, filed in 2018.
• Based on Maxell's Apple complaint (which states the '794 patent "was previously asserted in this District against Huawei …, ZTE …, and/or ASUSTeK Computer Inc."), this docket most plausibly corresponds to a Maxell v. ASUSTeK Computer Inc. action. I could not confirm the parties, case number mapping, or outcome for 5:18-cv-00136 within this session and am not asserting it as verified. Treat the ASUS/5:18-cv-00136 mapping as unconfirmed.
• Source: Google Patents litigation entries for US6329794B1; Maxell v. Apple Complaint (insight.rpxcorp.com/litigation_documents/13558576).

B. PTAB (Inter Partes Review) Proceedings

1. ZTE Corp. v. Maxell, Ltd. — IPR2018-00241

• Petitioner: ZTE Corporation and ZTE (USA) Inc.
• Patent Owner: Maxell, Ltd.
• Subject: U.S. 6,329,794 (one of seven ZTE IPR petitions against the asserted Maxell patents)
• Effective/filing date: petition effective Nov. 22, 2017; filed Jan. 30, 2018 (per USPTO legal events)
• Outcome/Status: Institution DENIED ("Not Instituted – Merits"). The '794 patent therefore survived ZTE's validity challenge.
• Sources: USPTO/Google Patents legal events for US6329794; Apple IPR2020‑00199 Institution Decision (citing "ZTE Corp. v. Maxell, Ltd., IPR2018‑00241 (institution denied)"); https://portal.unifiedpatents.com/ptab/case/IPR2018-00241.

2. Apple Inc. v. Maxell, Ltd. — IPR2020-00199

• Petitioner: Apple Inc. (real party‑in‑interest: Apple Inc.); Patent Owner: Maxell, Ltd.
• Subject: U.S. 6,329,794 B1, challenging claims 1‑3 and 5‑14
• Filed: Dec. 19, 2019 (PTAB docketed Jan. 21, 2020)
• Outcome/Status: Instituted on June 19, 2020 (Paper 11 — Decision Granting Institution, 35 U.S.C. § 314) on all grounds. The proceeding was then terminated due to settlement on April 20, 2021 (Paper 32), jointly with related IPRs IPR2020-00200, IPR2020-00202, and IPR2020-00204 (covering other Maxell patents, not the '794). The settlement agreement was kept confidential and separate from the '794 file.
• Sources: PTAB IPR2020‑00199 Institution Decision (Paper 11); PTAB Termination Order (Paper 32, Apr. 20, 2021); USPTO legal events; https://portal.unifiedpatents.com/ptab/case/IPR2020-00199.

C. Summary Table

D. Notes and Caveats

• No appeal or CAFC decision on the '794 patent was identified in the sources retrieved. The validity challenges ended at the institution stage (ZTE denied; Apple settled after institution).
• The '794 patent expired (lifetime) on/about 2020‑09‑07, which affects remedies going forward but does not erase the earlier verdict/settlement history.
• I did not find any current (2024–2026) litigation involving the '794 patent; the Maxell enforcement activity reported in 2024–2025 (e.g., Maxell v. Samsung, and Maxell v. Coretronic, 5:24-cv-00088) involves different patents and does not (on the record retrieved) assert the '794 patent.
• Strict identifier note: all docket numbers, IPR numbers and party names above are reproduced exactly as found in the cited records (e.g., "5:16-cv-00179-RWS," "IPR2018-00241," "IPR2020-00199"). I have not auto-corrected any identifier. The only items I could not verify to a primary source are the party/outcome details for 5:18-cv-00136 (ASUS mapping), and the direct '794 assertion in the 5:18-cv-00034 / 5:18-cv-00080 second ZTE actions — these are flagged above as unconfirmed. You may wish to confirm these two directly in PACER / the Unified Patents litigation portal (https://portal.unifiedpatents.com/litigation/caselist).

I'll start by verifying the proceeding numbers that appear in the litigation/legal-events data and pulling claim-level outcomes.

Key finding: the structured block says "no PTAB activity," but the patent's own litigation/legal-events data and the web results show two IPRs. Let me pin down dates and check for any others (Samsung, Huawei).

⚠️ Data-source conflict — read first

The structured "PTAB proceedings on file" block states that "the USPTO ODP API returns no AIA trial proceedings for this patent as of the most recent ingest" and directs me to default to "no PTAB activity on file."

That default is wrong for US 6,329,794. The authoritative patent record supplied in this prompt (its own litigation entries and Legal Events) lists two AIA trials, and I independently verified both against PTAB papers:

I treat the ODP "no proceedings" result as an ingest gap (both cases terminated before any Final Written Decision, which is likely why a decisions-oriented feed misses them). I flag two likely causes of the gap: (1) IPR2018-00241 was never instituted, and (2) IPR2020-00199 was terminated by settlement pre-FWD — neither produced a Final Written Decision document.

Two other data artifacts to correct before anyone relies on them:

• Google Patents' litigation block names "Unified Patents" as the IPR2020-00199 petitioner. That is the data-source attribution line from Unified Patents' licensed dataset, not a real party-in-interest. The PTAB institution decision is explicit: "Petitioner identifies Apple Inc. as the real party-in-interest." The petitioner is Apple Inc. There is no defensive aggregator in this patent's chain.
• A PTAB repository index entry surfaced bearing "Decision – Denying Petitioner's Request for Rehearing of Final Written Decision … IPR2020-00199 … 6329794." No FWD was ever issued in IPR2020-00199 (see below); I treat that entry as an index/metadata artifact and did not rely on it.

Proceedings overview

Two (2) AIA trial proceedings on file. Breakdown: 0 active · 0 claims invalidated · 0 claims sustained on the merits · 1 settled after institution (IPR2020-00199) · 1 institution denied on the merits (IPR2018-00241).

Bottom line for a defendant: the PTAB has never canceled a single claim of the '794 patent — and has never upheld one either. There is no Final Written Decision to cite, so you have neither a "claims are dead" argument nor an "IPR-hardened patent" problem. What you do have is a patent that is expired (recorded expiration 2020-09-07), whose entire asserted claim set (claims 1-3 and 5-14) was put into trial once — meaning the claims are materially untested on the merits after a 13-claim institution, and the §286 six-year damages lookback has now essentially run out on the expired term.

I order the proceedings by defensive impact, not by date: IPR2020-00199 goes first because it is the only case that cleared the §314(a) threshold on the full asserted claim set (the live risk signal), followed by IPR2018-00241, whose merits denial tells you which prior art doesn't work.

IPR2020-00199 — Apple Inc. v. Maxell, Ltd.

• Type: Inter Partes Review
• Filed: 2019-12-19 (PTAB docket entry 2020-01-21)
• Status: "PTAB case IPR2020-00199 filed (Settlement)" — plain English: instituted on all grounds, then terminated before any merits ruling because the parties settled globally.
• Judge panel: Minn Chung, Kevin C. Trock, and John A. Hudalla, Administrative Patent Judges (Paper 11 panel; the Paper 32 termination order confirms these three are "the panel in IPR2020-00199").
• Petition grounds: Challenged claims 1-3 and 5-14 (13 claims; claim 4 was never challenged). Grounds were § 103 obviousness over prior art, supported by the Declaration of Louis Hruska (Ex. 1003). The specific references are not reproduced in the materials I retrieved — I am not going to guess at them. (The Board instituted "on all grounds of unpatentability presented.")
• Institution decision: GRANTED 2020-06-19 (Paper 11). "We institute an inter partes review as to claims 1-3 and 5-14 of the '794 patent on all grounds of unpatentability presented." Notably, the Board took additional briefing on discretionary denial under § 314(a) — Petitioner's Reply (Paper 8) and Patent Owner's Sur-Reply (Paper 10) — and still instituted, i.e., the Fintiv-type efficiency arguments by Maxell failed. Application of the § 314(a) "reasonable likelihood" standard succeeded on every challenged claim.
• Final Written Decision: None. The case did not reach the merits. There is no holding, no claim canceled, no claim sustained — do not let anyone attribute claim-level outcomes to this proceeding.
• Settlement / termination: Joint Motion to Terminate granted 2021-04-20 (Paper 32), under 35 U.S.C. § 317 and 37 C.F.R. § 42.74. A Confidential Settlement and License Agreement (Ex. 1052) was filed and kept separate and business-confidential (§ 317(b)). Terms are confidential — no public royalty, scope, or field-of-use data. The parallel district court case (Maxell, Ltd. v. Apple Inc., No. 5:19-cv-00036, E.D. Tex.) was dismissed as part of the same deal. The settlement was publicly reported as reached on 2021-03-23, on the eve of jury selection. Same order terminated three sister Apple IPRs against other Maxell patents: IPR2020-00200 (US 10,084,991), IPR2020-00202 (US 10,212,586), IPR2020-00204 (US 6,928,306).
• Appeal: None. With no FWD, there was no appealable final decision; nothing went to the Federal Circuit.
• Defensive value: This is the case that matters, and it cuts against a patent owner's confidence and in favor of yours: Apple's petition was good enough to institute on all 13 challenged claims — a signal that strong § 103 art on the '794 exists and was assembled once already. But because the case settled pre-FWD, there is no estoppel and no invalidity judgment you can borrow. You must build the obviousness case yourself, and you cannot cite IPR2020-00199 for anything about patentability.

IPR2018-00241 — ZTE Corporation and ZTE (USA) Inc. v. Hitachi Maxell, Ltd.

• Type: Inter Partes Review
• Filed: 2017-11-22 (petition/declaration date; PTAB docket entry 2018-01-30; trial number issued in the 2018 series)
• Status: "PTAB case IPR2018-00241 filed (Not Instituted - Merits)" — plain English: the Board considered the merits and refused to institute; the claims stand as issued in the Patent Office's eyes.
• Judge panel: Not public in the materials I retrieved. Stating otherwise would be fabrication.
• Petition grounds: Challenged claims 1-3 and 5-14 of the '794 patent. The art Maxell itself contemporaneously catalogued as at issue: U.S. Patent Nos. 6,031,999; 5,560,022 ("Dunstan"); 6,345,180; 6,360,327 ("Hobson"); and the Advanced Configuration and Power Interface (ACPI) Specification — i.e., § 102/§ 103 grounds over patents and a printed publication.
• Institution decision: DENIED on the merits. Maxell's later pleading recites the Board's finding that the petition failed to "demonstrate a reasonable likelihood that Petitioner would prevail in showing that at least one of the challenged claims of the '794 Patent is unpatentable." The exact entry date of the denial was not confirmed in the sources I retrieved (by statute it would fall within ~six months of the accorded filing date, i.e., 2018). The denial is confirmed by the Apple panel's recitation: "ZTE Corp. v. Maxell, Ltd., IPR2018-00241 (institution denied) ('the '241 IPR')."
• Final Written Decision: None — never instituted.
• Settlement / termination: N/A (denial, no trial). The companion district court matters ran to judgment: Maxell Ltd. v. ZTE Corp. et al., No. 5:16-cv-00179 (E.D. Tex.), in which a jury on 2018-06-29 found willful infringement of seven patents — including the '794 patent — and awarded $43.3M.
• Appeal: None available. A refusal to institute is final and non-appealable under 35 U.S.C. § 314(d). ZTE did not (and could not) take this to the Federal Circuit.
• Defensive value: Its primary use is negative knowledge — do not recycle ZTE's art. The Board found the ACPI Specification + Hobson '327 + Dunstan '022 + '180 + '999 combination insufficient to even institute on claims 1-14. Worse, in the parallel E.D. Tex. case Maxell extracted counsel-stipulated withdrawals of ACPI, U.S. 6,360,327 (Hobson), and U.S. 5,560,022 (Dunstan) from ZTE's '794 invalidity case (2018-06-12 meet-and-confer correspondence) — a second, independent signal that those references were not working. At the same time, this denial is not estoppel, so it does not block anyone (including a ZTE privy) from asserting different art.

Strategic summary

Claim-level status of the '794 patent.

Anyone telling you "claims 1-5 were canceled" or "the patent survived two IPRs and is hardened" is misstating the record. The accurate statement is: the '794 patent has never been adjudicated on the merits at the PTAB, once because the Board declined to institute and once because the parties bought their way out. Two separate defendants found the patent worth attacking; one failed at the threshold and one succeeded at the threshold but then settled.

Estoppel landscape. There is no § 315(e)(2) estoppel on this patent at all.

• IPR2018-00241: estoppel under § 315(e)(1)-(2) attaches only after a final written decision; institution was denied, so ZTE (and its privies) are not statutorily estopped — though the Board's merits denial is practically discouraging as to that specific art.
• IPR2020-00199: terminated under § 317 before FWD, so again no statutory estoppel. Apple's obligations, if any, flow from the confidential settlement and license agreement, not from § 315(e) — and those terms are not public.
• Consequence for a new defendant: the entire universe of § 102/§ 103 art over patents and printed publications remains available (subject only to your own § 315(b) one-year time bar, running from service of a complaint on you, and to art you yourself already litigated). You are also free to assert § 112 / indefiniteness, which no IPR can reach — and which is unusually potent here (see below).

Pattern signals.

• Two unrelated petitioners over ~2 years: ZTE (2017-11-22) and Apple (2019-12-19). This is a well-asserted patent, but not a serial-IPR target: no petitioner filed twice.
• No defensive aggregator. The "Unified Patents" label in the Google Patents litigation block is dataset attribution, not a party. Unified did not petition on this patent.
• Apple ran a coordinated multi-front campaign against Maxell's portfolio in Dec 2019 - Jan 2021: IPR2020-00199/-00200/-00202/-00204 (all terminated together on 2021-04-20) plus a parallel wave of ex parte reexaminations (90/014,628 through 90/014,651 and beyond), all extinguished by the March 2021 global Maxell-Apple settlement. None of those proceedings went to FWD against the '794.
• Maxell is a serial plaintiff, but not a PTAB appellant on this patent. It has litigated in E.D. Tex. (ZTE $43.3M willful verdict, 2018-06-29), the ITC, and later against VIZIO and Samsung. No Federal Circuit appeal exists for US 6,329,794 — nothing appealable was ever decided.
• Critical independent fact: the '794 patent is recorded as expired as of 2020-09-07 (anticipated expiration, 20 years from the 2000-09-07 filing).

The best lever may not be the PTAB at all — it's claim construction. In Maxell Ltd. v. Huawei Device USA, Inc., 297 F. Supp. 3d 668 (E.D. Tex. 2018), the court held that "function devices equipped with independent functions" (claim 1) and "component devices for performing different functions" (claim 9) are means-plus-function terms under § 112 ¶ 6, and construed the corresponding structure as "modem devices, audio communication devices and videophone devices, or equivalents thereof" — expressly refusing to include the CPU/memory "common function device" of Fig. 3 in the structure. That is a narrow, structure-limited construction that a modern smartphone/tablet accused product may struggle to meet, and it is a strong non-infringement and invalidity-gap tool. (Maxell had argued for a much broader "hardware, software, or a combination" construction and lost.)

Recommended next steps

1. Do not cite any FWD for this patent — there isn't one. If a demand letter or complaint cites "claims 1-3 and 5-14 as upheld in IPR2020-00199", that is false: IPR2020-00199 was instituted 2020-06-19 (Paper 11) and terminated by settlement 2021-04-20 (Paper 32, "we have not yet decided the merits of these proceedings … terminate these proceedings without rendering any further decisions"). The institution decision is at PTAB E2E / reproduced at https://www.docketalarm.com/cases/Texas_Eastern_District_Court/5--19-cv-00036/Maxell_Ltd._v._Apple_Inc/docs/646/1.pdf (Paper 11); the termination order is at http://e.casetext.com/admin-law/maxell-ltd-14.
2. Lead with expiration + § 286. With the term recorded as ending 2020-09-07, there is no prospective infringement and no injunction exposure. Recovery under 35 U.S.C. § 286 is limited to acts within six years before the complaint — so a complaint filed on or after 2026-09-07 can reach back only to 2020-09-07, and any act on/after expiration is non-actionable. As of today (2026-09-28) that window is effectively closed. Verify the expiration date and confirm no PTA/PTE extension exists on the face of the patent before relying on this — the 2020-09-07 figure comes from the patent's recorded "anticipated expiration," not from a certificate of correction review.
3. If you are facing a past-damages demand, run the Huawei MPF construction first. "Modem devices, audio communication devices and videophone devices, or equivalents" is the binding E.D. Tex. construction for the two key functional terms, and the same terms drew a § 112 ¶ 6 fight in Maxell's ITC/VIZIO campaign. Non-infringement is likely cheaper than validity.
4. If you do file an IPR (§ 315(b) clock permitting), do not reuse ZTE's art. Do not lead with the ACPI Specification, U.S. 6,360,327 (Hobson), U.S. 5,560,022 (Dunstan), U.S. 6,345,180, or U.S. 6,031,999 — the Board declined institution on claims 1-3/5-14 over that set (IPR2018-00241, "Not Instituted – Merits"), and Maxell's counsel secured the withdrawal of ACPI, Hobson and Dunstan from the E.D. Tex. '794 case in June 2018. Remember there is no estoppel from either proceeding, so the field is open, but the record tells you where the traps are.
5. Note the trial-stage milestones that never arrived. IPR2020-00199 had already passed institution (1-year FWD deadline would have run to ~2021-06-19) when it was killed by settlement on 2021-04-20 — there is no oral hearing record, no FWD, and no appeal. Nothing is pending today. If you want to double-check for any post-2021 filing on the '794 that ODP may have missed, search PTAB E2E docket search by patent number directly — I found no evidence of any AIA petition against the '794 after Apple's 2019 filing. One caveat: a reported [ASUSTek Computer Inc.](/litigations/by-defendant/ASUSTek%20Computer%20Inc.) v. Maxell, Ltd. IPR (filed 2018-10-16, institution denied) exists against a Maxell patent, but I could not confirm it targets the '794 — do not assume it does.

I'll research the assignment records and related sources before assembling the report.

Good — the Google Patents full text actually includes reel/frame for all links. Now let me hunt for the correspondents of record and NPE-directory entries.

Assignment & Ownership Reconstruction — US Patent 6,329,794 B1

Scope note: The reel/frame numbers below come from the Google Patents legal-events table for the '794 patent (which reproduces the Assignment Center record fields) and are independently corroborated in part by a 37 CFR 3.73(c) statement filed in a Maxell-family PTAB proceeding (PTACTS petition 1558234, which lists Reel 045142/0208 → 058255/0579 → 058666/0407 in sequence). One field the task asks for — Correspondent of record — is not present in either source, and I was unable to retrieve it in this session; I have marked it as unavailable rather than guessing. See "Correspondent gap" at the end.

Inventors

Evidence of employer: The only assignment of inventors' rights on record is the 2000-12-27 recording (Reel 011399/0570), in which all three inventors assign to HITACHI, LTD., JAPAN, with signing dates 2000-08-25 to 2000-09-05 — i.e., all three executed within ~2 weeks before the 2000-09-07 U.S. filing, and ~3 months after the 2000-05-22 JP priority filing. That is a routine, same-employer invention-assignment pattern. All three are Japan-resident; the specification's FIG. 2 device examples (notebook PC, home appliance, wireless information device) are consistent with Hitachi's then-current product lines.

Unusual patterns: None detected. There is no recorded re-assignment from any inventor after 2000, no separate inventor-side assignment to a third party, and no evidence of the inventors departing Hitachi. I want to be explicit: I could not verify individual inventor employment histories or departure dates from the sources available, so the "all inventors left within 12 months" tell is unclear, not absent — it simply isn't testable on this record.

Original assignee

Hitachi, Ltd. (Tokyo, Japan) — named on the face of the issued patent and the assignee under Reel 011399/0570.

• Primary line of business: diversified industrial/electronics conglomerate (information & telecommunication systems, power systems, consumer electronics, digital media, components). At the 2000 filing date it was one of the world's largest electronics manufacturers, including a notebook-PC line (FLORA business notebooks / Prius consumer notebooks) and wireless/handset products.
• Did they ship a product embodying the claims? Likely but not verified in this session. The patent is directed at battery-powered information processing devices having multiple independently operable function devices with priority-ranked power-down (spec: notebook computers; audio-communication vs. videophone function devices). Hitachi shipped battery-powered notebooks and consumer electronics in this era. I did not locate a product datasheet, manual, or court finding tying a specific Hitachi SKU to claims 1 or 9, so I flag this as inference, not finding.
• Current status: Operating (Tokyo Stock Exchange Prime, ticker 6501). The '794 patent is no longer a Hitachi asset — it exited the parent in the 2011/2014 reorganizations below.

Assignment timeline

Six recorded post-issuance/at-filing events. No security agreements, licenses, releases, or corrections are recorded against this patent. All recorded conveyances are internal corporate transfers within the Hitachi/Maxell family.

2000-08-25 to 2000-09-05 (executed) / recorded 2000-12-27 — Reel 011399/0570

• Conveyance: Assignment (ASSIGNMENT OF ASSIGNORS INTEREST)
• Assignor: Shigeto Oeda; Naoki Mori; Hiromichi Ito (inventors)
• Assignee: Hitachi, Ltd. (Japan)
• Correspondent: Not retrievable — see gap note.
• Context: Ordinary pre-filing employment assignment of inventors' rights to the operating company.

2011-10-11 (executed) / recorded 2011-10-19 — Reel 027088/0786

• Conveyance: Assignment (ASSIGNMENT OF ASSIGNORS INTEREST)
• Assignor: Hitachi, Ltd.
• Assignee: Hitachi Consumer Electronics Co., Ltd. (Japan)
• Correspondent: Not retrievable — see gap note.
• Context: Internal reorganization — carve-out of Hitachi's consumer-electronics businesses into a dedicated subsidiary; recorded as a straight assignment, not a merger.

2014-08-26 (executed) / recorded 2014-09-08 — Reel 033694/0745

• Conveyance: Assignment (ASSIGNMENT OF ASSIGNORS INTEREST)
• Assignor: Hitachi Consumer Electronics Co., Ltd. (the Google Patents index renders the assignor field twice — "HITACHI CONSUMER ELECTRONICS CO., LTD.; HITACHI CONSUMER ELECTRONICS CO, LTD." — which is a data artifact of the record, not two assignors; flagging per the discrepancy rule.)
• Assignee: Hitachi Maxell, Ltd. (Japan)
• Correspondent: Not retrievable — see gap note.
• Context: Internal reorganization — consolidation of Hitachi's Maxell (battery/storage-media) and consumer-electronics businesses into a single wholly-owned subsidiary, consistent with Hitachi's 2013–2014 subsidiary restructuring. The recorded instrument is an intercompany assignment, so this is not a third-party sale.

2017-10-01 (executed) / recorded 2018-01-25 — Reel 045142/0208

• Conveyance: Assignment (ASSIGNMENT OF ASSIGNOR'S INTEREST)
• Assignor: Hitachi Maxell, Ltd.
• Assignee: Maxell, Ltd. (Japan)
• Correspondent: Not retrievable — see gap note.
• Context: Internal reorganization / de-branding — the "Hitachi" prefix drops out of the corporate name; a pure intra-group transfer, no consideration or third-party buyer evidenced.

2021-10-01 (executed) / recorded 2021-11-29 — Reel 058255/0579

• Conveyance: Merger (MERGER; ASSIGNOR: MAXELL, LTD.)
• Assignor: Maxell, Ltd.
• Assignee: Maxell Holdings, Ltd. (Japan)
• Correspondent: Not retrievable — see gap note.
• Context: Internal holding-company reorganization — statutory merger into a new holding entity (not an asset sale, not a fire-sale).

2021-10-01 (executed) / recorded 2021-12-03 — Reel 058666/0407

• Conveyance: Change of Name (CHANGE OF NAME; ASSIGNOR: MAXELL HOLDINGS, LTD.)
• Assignor: Maxell Holdings, Ltd.
• Assignee: Maxell, Ltd. (Japan)
• Correspondent: Not retrievable — see gap note.
• Context: Change of name only — the holding company renamed itself back to "Maxell, Ltd." Four days after the merger recording. This is the current owner and matches Google Patents' "Current Assignee" field.

(Non-assignment legal events worth noting for ownership/viability: maintenance-fee lapse effective 2005-12-11, late-fee petition filed 2005-12-01 and granted 2005-12-03, reinstatement 2006-03-06, then 4-year / 8-year / 12-year fee payments on 2006-01-23, 2009-05-22 and 2013-05-15; anticipated expiration 2020-09-07. No assignment occurred around the lapse/reinstatement, so the ownership chain is unbroken.)

Timeline diagram

timeline
    title Ownership of US 6329794
    2000 : Inventors assign to Hitachi Ltd
         : US application filed 7 Sep
    2001 : Patent issued 11 Dec
    2011 : Hitachi Ltd to Hitachi Consumer Electronics
    2014 : Hitachi Consumer Electronics to Hitachi Maxell
    2017 : Hitachi Maxell to Maxell Ltd
    2018 : Transfer recorded at Reel 045142 0208
    2020 : Patent term expires 7 Sep
    2021 : Maxell Ltd merges into Maxell Holdings
         : Renamed back to Maxell Ltd

NPE / troll-pattern signals

1. Shell-entity transfer — NOT PRESENT. Every assignee in the chain is a named Japanese operating corporation in the Hitachi/Maxell group. No "IP / Patents / Licensing / Ventures" LLC appears anywhere in the record. No registered-agent service address, no single-member Delaware/Texas LLC, no anonymous entity. Reels 027088/0786, 033694/0745, 045142/0208, 058255/0579, 058666/0407.

2. Known asserter in the chain — PRESENT, with a caveat. Maxell, Ltd. does not appear on the classic enumerated NPE lists (Acacia, Marathon, IV, IPNav, Wi-LAN, Conversant, Vringo, Pendrell, Round Rock, Spangenberg entities), but it is a high-frequency patent plaintiff tracked by Unified Patents / RPX docket datasets — four Unified-tracked matters on this patent alone (IPR2018-00241 by ZTE; IPR2020-00199 by Apple; E.D. Tex. 5:16-cv-00179; 5:18-cv-00136; 5:19-cv-00036), plus the wider Maxell campaign against ZTE, Huawei, Apple, Samsung and others. Critically, Maxell's own product line (batteries, optical media, projectors, audio) does not embody the '794 claims (multi-function-device priority power-down in battery-powered computers/handsets), so as to this patent Maxell is functionally non-practicing even though it is an operating company overall. Reels 045142/0208 and 058666/0407 put this portfolio in Maxell's hands before the assertion campaign. This is the one materially load-bearing signal.

3. Repeat correspondent across the chain — UNABLE TO ASSESS (data unavailable). The correspondent fields for Reels 011399/0570, 027088/0786, 033694/0745, 045142/0208, 058255/0579 and 058666/0407 were not retrievable in this session. I will not name a firm I did not read off the record. This is the single highest-value follow-up: the 2011–2018 recordings would show whether one law firm ran every Hitachi-family transfer.

4. Cascading transfers — WEAKLY PRESENT as accounting pattern, NOT as NPE pattern. There are four assignments in 2011→2021 (~10 years), with 2014→2017→2021 each separated by ~3-4 years. No chained LLCs, no transfers inside 24 months through unrelated entities, no common registered-agent address. The transfers track Hitachi's disclosed corporate restructuring, not an assertion-vehicle build-out.

5. Pre-litigation transfer — NOT PRESENT. The last ownership-changing transfer (Reel 045142/0208) executed 2017-10-01, well over a year before/after the first '794 assertion in E.D. Tex. (5:16-cv-00179, filed Nov. 2016 — which predates that transfer). The 2021 merger/name-change recordings (058255/0579; 058666/0407) post-date the assertion campaign and coincide with the Apple-case settlement period; they are housekeeping, not venue- or standing-driven transfers.

6. Bankruptcy fire-sale — NOT PRESENT. No Chapter 7/11, no trustee's sale, no §363 sale order anywhere in the chain. Hitachi and Maxell are both solvent, listed Japanese issuers throughout.

7. Privateering — UNCLEAR / PARTIALLY SUPPORTIVE. The functional pattern fits: Hitachi divested its consumer-electronics patent estate down through subsidiaries to Maxell (a partly-independent, then wholly-owned, then fully separate listed company), and Maxell then asserted the inherited legacy Hitachi patents against ZTE, Huawei, Apple and Samsung. That is the classic shape of privateering. However, the specific hallmarks the framework asks for — an SEC 10-K/8-K disclosure of the patent transfer or its assertion intent, or EFF/Patent Progress coverage naming the arrangement — were not located in the sources I could reach. I therefore mark it unclear rather than present.

8. Defensive aggregator — NOT PRESENT. The chain terminates at Maxell, Ltd., an operating manufacturer — not RPX, AST, LOT, Unified Patents, or OIN. The patent was never neutralized; it was asserted.

Verdict

NPE — moderate confidence.

The assignment record itself contains no shell-entity signal at all — all six recordings (Reels 011399/0570, 027088/0786, 033694/0745, 045142/0208, 058255/0579, 058666/0407) are intra-group Hitachi/Maxell corporate transfers, with the final link (058666/0407, recorded 2021-12-03) being a pure change of name. The NPE character comes from who is asserting and what they make, not from how the title moved: the current owner, Maxell, Ltd., does not practice the '794 claims (it exited computers and sells batteries, media and projectors) yet asserted the patent against mobile-device and PC makers (ZTE in 5:16-cv-00179; Apple in 5:19-cv-00036; IPR2018-00241 and IPR2020-00199), making it functionally non-practicing as to this patent. That is one strong signal (non-practicing assertion of an inherited legacy portfolio) without corroborating shell/repeat-correspondent evidence — hence moderate, not high. Two things would move this verdict: (a) the correspondent fields on Reels 027088/0786 through 058666/0407, to test for a repeat recording attorney; and (b) an SEC filing documenting the consumer-electronics patent transfer's purpose, to convert signal 7 from unclear to present.

Verify at: USPTO Assignment Center — https://assignmentcenter.uspto.gov/ (search patent number 6329794) and the legacy mirror https://assignment.uspto.gov/patent/index.html. PTAB corroboration for the last three reels appears in PTACTS petition 1558234 (37 CFR 3.73(c) statement listing Reel 045142/0208, Reel 058255/0579, Reel 058666/0407).

Correspondent gap (explicit non-finding)

Neither the Google Patents legal-events reproduction nor the PTAB 3.73(c) statement carries the correspondent of record for any of the six recordings, and I was unable to query the Assignment Center's correspondent field directly before exhausting my research budget. I am therefore recording "correspondent: not retrieved" for all six entries rather than inferring a firm from the parties' identity. Note also the still-unresolved discrepancy flagged in the earlier summary: a PTACTS case-indexed caption "Decision – Denying Petitioner's Request for Rehearing of Final Written Decision" bearing 6329794 (PTACTS petition 1557278) is in tension with the Board's own termination order in IPR2020-00199 stating no final written decision issued; nothing in the assignment record bears on that, and I have not used it in the ownership analysis.

I'll query the USPTO/patent databases for the '794 patent and each of its cited references.

Now the remaining two examiner-cited references.

Let me check the IPR2018-00241 grounds and the ACPI non-patent citation, plus verify the two Samsung references' dates.

Prior-Art Analysis — US 6,329,794 B1

Retrieval note: Patent and citation metadata below were pulled from the USPTO/Google Patents record for US 6,329,794 B1 (https://patents.google.com/patent/US6329794/en) and its PTAB/court filings. Identifiers are reproduced literally. This complements — and where noted updates — the earlier bibliographic and litigation sections; it does not repeat them.

1. What the '794 citation record actually contains

The '794 patent's "Patent Citations (3)" list is short. All three are US grants and all three are flagged cited by examiner. The examiner also cited one non-patent item:

The "Cited By" list (US 7,148,655; US 7,017,061; GB 2,446,168; US 7,528,577; US 7,600,139; US 8,886,983; US 9,936,458; etc.) is later-dated art and therefore irrelevant to § 102 anticipation of the '794 claims.

Prosecution framing. The '794 was filed 2000-09-07 (JP priority 2000-05-22), so pre-AIA 35 U.S.C. § 102/103 governs. Critically, none of the three cited references issued more than one year before 1999-09-07, so none qualifies as § 102(b) art; each can only be § 102(a)/(e) art (i.e., a patent "before the invention" / a US patent granted on an earlier-filed application).

2. Reference 1 — US 5,969,529

Full citation: US 5,969,529 A, Electronic apparatus having battery power source, Sharp Kabushiki Kaisha (inventor Sunano-lineage Sharp disclosure). Applied/filed on or about 1996-03-14 (Google Patents "Priority date" field); issued 1999-10-19.

Description (as surfaced): The disclosure addresses an electronic apparatus (e.g., a unit with a PCMCIA card slot 200a) powered by an internal battery 202 or an external AC adapter. It uses a boost circuit (coil L1, diode D1, power-source IC 221) and a switching element 211 (FET1) between the boost output and the card slot. The stated problem is inrush current when a card is hot-attached; the stated object is to interrupt the power-supply path when the power-source level falls to or below a predetermined value, and to avoid requiring a special user operation (system initialization/restart) when the source improves after battery replacement or AC connection. It expressly distinguishes JP-A 1-94493 (ID card reporting a battery-level reduction to an external apparatus).

Claims it could potentially bear on under § 102:

• Claim 3 (a changeover device capable of cutting off power to part or all of a function device, controller-controlled): the reference's switching element that interrupts the card power path is the only structural analogue.
• Claim 4 (notification before cut-off): the reference concerns inducing a controlled interruption, but there is no disclosure of a pre-cutoff warning handshake.
• Claims 1 and 9: no bearing.

Anticipation verdict — NO. US 5,969,529 does not disclose (i) at least two devices with independent functions, (ii) usage priorities, or (iii) the two-threshold staged instruction of claim 1 (sets GA at NA, GB at NB with GB ⊄ GA) or claim 9's first/second reference levels applied to lower- then higher-priority component-device subsets. It is a single-device power-interruption/inrush reference. At most it is § 103 background art for claim 3's "changeover device." Because it issued 1999-10-19 — after 1999-09-07 — it cannot be § 102(b) art at all.

3. Reference 2 — US 6,049,210

Full citation: US 6,049,210, Device for displaying remaining battery capacity, Samsung Electronics Co., Ltd. Priority/filing date listed as 1997-01-17 (Google Patents "Priority date"); issued 2000-04-11.

Description (as surfaced): A battery-capacity measuring circuit 100 feeding a microprocessor 200 and a display 300 (LCD). A current-sensing resistor Rs senses charge/discharge current; op-amps A1/A2 sense charge and discharge current; a current-to-frequency converter produces count signals CNT1/CNT2; the microprocessor compares the toggle frequencies with a predetermined value to determine the remaining capacity, which the LCD displays. Offset switches S2a/S2b/S3a/S3b correct amplifier offset error.

Claims it could potentially bear on under § 102:

• The "capacity detector for detecting a remaining capacity of said battery" element of claim 1 and the "capacity detector detecting a remaining battery capacity" element of claim 9 — this is the element the examiner was evidently using it for.
• Tangentially, the display of remaining capacity (described in the '794 specification/abstract), though no '794 claim recites a display.

Anticipation verdict — NO. The reference discloses only the measurement-and-display of remaining capacity. It contains no controller issuing power-consumption reduction instructions, no usage priorities, and no staged shut-down sets. Even read in the light most favourable to the examiner, it supplies one element of claims 1 and 9, not the whole claimed combination arranged as claimed (the classic § 102 "arrangement of all elements" test). It issued 2000-04-11, i.e., roughly six weeks before the '794's JP priority date — so it is § 102(a)/(e) art at best, never § 102(b).

4. Reference 3 — US 6,100,666

Full citation: US 6,100,666, Method for calibrating rechargeable battery capacity, Samsung Electronics Co., Ltd. Priority date listed as 1998-06-15 (KR-origin); issued 2000-08-08.

Description (as surfaced): A battery-calibration method for portable computers using "smart" batteries with fuel-gauge functions (expressly referencing US 5,315,228). The method: fully charge; set the system to maximum power-consumption mode; discharge the battery; determine capacity; then set the system to minimum power-consumption mode and re-enable power management. Background art listed includes Iida (4,151,454), Faulkner (4,912,392), Startup (5,268,845), McClure (5,563,496) and Moravec (5,596,260). Its EP counterpart is EP 0 965 906 A3 (Samsung; inventor Ryu, Chang-Hyun), which was refused by the EPO and affirmed on appeal (T 1521/05) over D1/D2.

Claims it could potentially bear on under § 102:

• Only the capacity-determination / capacity-detector element of claims 1 and 9 — and even that via a calibration (learning) rather than an operational remaining-capacity threshold comparison.
• Its "maximum/minimum power consumption mode" language is a system-wide power state, not the '794's device-by-device, priority-ordered reduction.

Anticipation verdict — NO. Its "high/low power mode" is antithetical to the '794's per-function-device, priority-ranked staging. It discloses neither priority sets nor plural reference levels mapped to different device groups. Issued 2000-08-08, again later than 1999-09-07 ⇒ not § 102(b) art.

5. Reference 4 (NPL) — the ACPI item

Full citation: Research File No. 5, ACPI, POS/V Magazine (1999), 7.15, p. 210 (non-patent literature, examiner-cited; also surfaced as "D1" in the EPO T 1521/05 discussion, where it is described as disclosing a "power management controller" and power-management states such as full speed and suspended).

Relevance: ACPI is the acknowledged background power-management framework (system-wide power states, idle/suspend control). It supports § 103 arguments about the general knowledge of power management at the 2000 priority date, but it is not a § 102 anticipation reference for any '794 claim: ACPI's model aggregates power states at the platform level and does not disclose the claimed priority-ranked, per-function-device staged reduction instruction (sets GA/GB at NA/NB). The '794 specification's own framing — that conventional art supplies power "equally" to multiple function devices with no priority differentiation — is a direct rebuttal to treating ACPI as anticipatory.

6. Third-party / PTAB art (NOT part of the '794 citation record — read with caution)

These surfaced in the ZTE-side challenges but are not examiner citations against '794. I flag them because a validity analysis is incomplete without them:

• IPR2018-00241 (ZTE Corporation / ZTE (USA) Inc.) — recorded on Google Patents as "Not Instituted – Merits" (institution denied). The earlier section listed asserted art as US 6,031,999; US 5,560,022; US 6,345,180; US 6,360,327; and the ACPI Specification. Verified in this pass: a June 12, 2018 meet-and-confer email in Maxell v. ZTE, 5:16-cv-00179 (Dkt. 291-11) identifies the '794 references not part of the case as ACPI, US 6,360,327 ("Hobson") and US 5,560,022 ("Dunstan") — i.e., those three were withdrawn/dropped as to '794. Another Docket Alarm exhibit confirms Maxell represented it "will not be presenting section 102 or 103 defenses for the '794, '493 or 729 patents" at trial.
  • ⚠️ Not verified here: the specific presence of US 6,031,999 and US 6,345,180 in the '794 IPR petition. Treat those two as unconfirmed.
• IPR2020-00199 (Apple Inc.) — instituted as to claims 1–3 and 5–14, then terminated on settlement without a final written decision (consistent with the earlier section's discrepancy flag; the conflicting "rehearing of final written decision" caption remains unresolved and I still find no verified merits FWD on the '794).

Anticipation verdict for these: the fact that the ZTE petition was denied institution and the Apple IPR settled before any merits decision is affirmative evidence that the available art (ACPI + Hobson + Dunstan + the Samsung/Sharp citations, and whatever else was pleaded) did not present a clean § 102 case against claims 1 and 9 — consistent with the element-by-element analysis above.

7. Element-by-element § 102 matrix

No single cited reference discloses every element of any of claims 1–14 arranged as claimed. There is no § 102 anticipation by the three examiner-cited patents or by the ACPI NPL item. Their value is as § 103 background for the capacity-detection and power-interruption elements.

8. Claim construction — an update that constrains the art

The earlier section flagged that the E.D. Tex. constructions for '794 terms were not retrieved. The PTACTS materials surfaced in this pass supply them:

• "function devices equipped with independent functions" — construed with structure "modem devices, audio communication devices and videophone devices, or equivalents thereof."
• "component devices for performing different functions" — construed similarly (structure tied to such classes of devices).
• The court rejected reading the common CPU/memory (FIG. 3's common function device 302) into the independent-claim "function devices," holding the common device is not one of the devices recited in claims 1/9 (relying on claims 8/14 which add the common device).
• "controller" was treated as connoting sufficient structure (not § 112 ¶ 6) in the related Maxell v. Huawei construction.

Effect on prior art: this construction narrows the '794 claims to concrete device classes (modem/audio-communication/videophone or equivalents). That makes the cited Samsung references (capacity meter; calibration) even less apt as § 102 art — they disclose none of those device classes with priority-ranked supply control.

9. Bottom line

1. The '794 citation record is thin and non-anticipatory. US 5,969,529 (Sharp), US 6,049,210 (Samsung), US 6,100,666 (Samsung) and the ACPI NPL item each touch only isolated elements (power interruption for a card slot; remaining-capacity measurement/display; capacity calibration; system-level power states). None anticipates claims 1 or 9, or any dependent claim, under 35 U.S.C. § 102.
2. No cited reference is § 102(b) art (none issued before 1999-09-07). They are § 102(a)/(e) references whose only role is § 103 background.
3. Most "dangerous" for § 103: US 6,049,210 + ACPI, if combined with an obviousness rationale to rank device shut-down by priority — but that is a § 103 theory, and the record shows ZTE's own challenge on the '794 was not instituted and Apple's settled pre-merits, so no merits finding ever issued.
4. Cautions: the previous section's list of ZTE IPR2018-00241 art (US 6,031,999, US 6,345,180) could not be independently verified in this pass and should not be relied on; the verified dropped-'794 references were ACPI, US 6,360,327 (Hobson), US 5,560,022 (Dunstan).

I'll ground this analysis in the actual prior-art references of record before building the § 103 combinations.

Now let me pull the IPR grounds and the secondary references cited in the PTAB challenges.

Let me pull the actual grounds Apple and ZTE asserted, and identify the secondary references.

Obviousness Analysis — U.S. Patent 6,329,794 B1 under 35 U.S.C. § 103(a)

Builds on, and does not repeat: the bibliographic table, abstract, claim summaries, litigation/PTAB history, and CAFC 2026 docket check in the previously generated sections. Those are treated as authoritative here and are cross-referenced rather than restated.

Method note — what "the Prior Art section of this page" contains. The Google Patents page for the '794 patent (https://patents.google.com/patent/[US6329794](/patent/US6329794)/en) presents prior art in four buckets, and they are not equivalent for § 103 purposes:

The ZTE-asserted art and Apple's IPR grounds are discussed separately in §VI–VII as asserted art not appearing in the page's citation lists.

I. Legal framework and the operative date

• Analysis is under pre-AIA § 103(a) (application filed 2000-09-07; priority 2000-05-22 from JP 2000-154358). The four Graham factors govern: scope/content of the prior art, differences, level of ordinary skill, secondary considerations.
• KSR Int'l Co. v. Teleflex Inc., 550 U.S. 398 (2007), supplies the operative rationales — but the rationales must be grounded in what the art taught as of 2000-05-22, not in hindsight.
• Because the JP priority date is asserted, the effective date for antedating § 102(a)/(e) art is 2000-05-22. (Note: a foreign priority date does not advance a reference's own § 102(e) date — relevant below for US 6,100,666.)
• § 102(b) art must predate 1999-09-07.

Confidence: high on the effective date and the pre-AIA posture.

II. The examiner-cited references — what they actually teach

US 5,969,529 (Sharp Kabushiki Kaisha) — "Electronic apparatus having battery power source"

Priority 1996-03-14; issued 1999-10-19. Retrieved: https://patents.google.com/patent/US5969529 and https://uspto.report/patent/grant/[5969529](/patent/5969529).

Disclosed structure and function (from the retrieved text):

• Electronic apparatus 200 with a PCMCIA slot 200a, an external power source terminal 200b (AC adaptor), an internal battery 202, CPU 200a / ROM 200b / functional circuit 200c, and a boost circuit 220.
• A switching element 211 composed of a field-effect transistor FET1 sits between the boost-circuit output and the card slot.
• Expressed in the claim-1 language of the '794 patent: "power supply interrupting means for receiving the [output of] remaining capacity detecting [means] … when it is [below a] predetermined value … the [power to a] card-like electronic part." The stated objective is preventing the power-source level from dropping below VCC (5 V) so the apparatus is "prevented from malfunctioning," and suppressing inrush current on card insertion.

What it supplies for § 103: a battery; a remaining-capacity detector; comparison of remaining capacity against a predetermined value; and a changeover device that cuts power to one functional module (the card) while the host apparatus continues to operate. That is a single-threshold, single-module subset of claims 1/9.

What it does not supply: any notion of ranking two or more function devices, any second, lower threshold mapped to a different group, and no "usage priority" of any kind. Its trigger is protective (brown-out / inrush), not prioritized.

US 6,049,210 (Samsung) — "Device for displaying remaining battery capacity"

Priority 1996-01-17; issued 2000-04-11. Retrieved: https://patentimages.storage.googleapis.com/90/80/d1/ef5dcb7c74c1d0/US6049210.pdf and http://www.everypatent.com/comp/pat6049210.html.

Discloses: battery capacity measuring circuit 100 (a current-to-frequency converter using sensing resistor Rs, integrator A4, comparators A6/A7 against reference voltages Vref1 and Vref2), a microprocessor 200 that "compares the toggle frequencies … with a predetermined value, to check the remaining capacity," and a display 300 (LCD) showing remaining capacity.

§ 103 relevance: it supplies (a) the "capacity detector" as a measurement circuit plus processor comparison — which is exactly the structure the parties fought over in claim construction (Apple v. Maxell, below); (b) the display of remaining capacity. Its Vref1/Vref2 pair is internal to the coulomb-counting integrator (charge vs. discharge thresholds), not two battery-capacity trip points — an important distinction a petitioner must not overstate.

US 6,100,666 (Samsung) — "Method for calibrating rechargeable battery capacity"

Filed 1998-06-15; issued 2000-08-08. § 102(e) date is its US filing date, 1998-06-15 — so it is available despite issuing after the 2000-05-22 priority date. Confidence: high on the § 102(e) analysis; moderate on the reference's detailed content (I did not retrieve its full text this session).

Relevance is indirect: it corroborates that accurate state-of-charge determination was a recognized, solved problem before 2000 — the necessary predicate for any threshold-triggered power scheme to fire at the intended charge level.

Research File No. 5, ACPI, POS/V Magazine (1999)

The ACPI framework of record is the single most important non-patent reference for § 103, for reasons developed in §V. Caveat: I was not able to retrieve the cited Research File itself. My characterizations of ACPI below are drawn from general knowledge of the ACPI specification (OS-directed configuration and power management; system states S1–S5; device power states D0–D3; processor performance/throttling states; battery and AC interfaces with trip-point notification; and user-selectable power policy). Confidence: moderate on the specific disclosure of any given ACPI mechanism; I would not attribute a specific ACPI section number to the record without pulling the document.

III. Level of ordinary skill in the art (POSITA)

The IPR record shows Apple submitted a Declaration of Louis Hruska (Ex. 1003) in IPR2020-00199 (https://www.docketalarm.com/cases/Texas_Eastern_District_Court/5--19-cv-00036/Maxell_Ltd._v._Apple_Inc/docs/646/1.pdf). I did not retrieve the precise level-of-skill articulation, so the following is my proposed definition rather than a quoted one:

A POSITA as of May 2000 would hold a bachelor's degree in electrical engineering or computer engineering (or equivalent), with 2–4 years of experience in power management of battery-operated portable computing/communication devices — including battery fuel-gauge design, DC power distribution, and OS-level power policy (ACPI).

This matters because the claimed subject matter sits at the hardware/firmware boundary: the capacity detector and changeover logic are hardware, while the priority table and threshold mapping are firmware/policy. A POSITA of this profile would naturally look to both battery-management patents and the ACPI specification.

IV. Constructions that constrain any § 103 mapping

From the E.D. Tex. claim-construction order in the Huawei/Maxell action (https://www.courtlistener.com/opinion/[7329083](/patent/7329083)/maxell-ltd-v-huawei-device-us-inc/ and https://ptacts.uspto.gov/ptacts/public-informations/petitions/[1510559](/patent/1510559)/download-documents), the court construed:

Critically, the same order rejected reading a CPU/memory into the "function devices" limitation, reasoning that the common device "is not one of the devices recited in the independent claims" and that "the inclusion of a CPU and memory is inappropriate" for the structural construction of the function devices term. Consequence for § 103: the prior art must disclose distinct, independently powered peripheral/functional modules, not merely distinct power domains of a single processor. This is a meaningful narrowing, and it is the point on which several otherwise-plausible prosecution-style rejections would fail.

V. The core § 103 case — Combination A: US 5,969,529 + ACPI + US 6,049,210

This is the most defensible combination built strictly on the page's own prior-art citations.

V.1 Element-by-element mapping

The gap is explicit and narrow: neither the three cited patents nor ACPI, as I can verify them, discloses mapping two ordered battery thresholds onto two disjoint, priority-ranked groups of function devices. That is precisely the limitation the examiner allowed over. Any honest § 103 opinion must say so.

V.2 The motivation to combine (why this gap is bridgeable)

Four KSR-grounded rationales apply:

1. Same field, same problem, analogous art. All three patents and the ACPI NPL address the identical problem the '794 background admits: extending useful operation of a battery-powered device and avoiding sudden loss of function as charge depletes. The '794 specification itself concedes the prior art already performed capacity detection, per-function shutdown, and display of remaining capacity (Background; FIG. 4/5/8/9 disclosure). A POSITA would as a matter of course consult ACPI when designing battery policy for a portable computer in 2000 — ACPI was the industry framework for exactly that task.

2. Known technique applied to a known structure → predictable result. Threshold-triggered selective power interruption was a known technique (US 5,969,529 does exactly this at one threshold). Applying that known technique hierarchically — a second, lower threshold actuating a second switch to a second device — is the application of a known technique to a known structure, yielding the predictable result (the energy freed by shedding device 1 extends the runtime of device 2). KSR, 550 U.S. at 417.

3. Design incentive / market pressure. The '794 background frames the problem in terms of a user being forced to manually stop device B. But a POSITA already had the incentive to automate load shedding: US 5,969,529's expressed purpose is preventing malfunction by automatic power interruption. Automating a step the user performs manually is a classic obviousness rationale (§ 103 "automation of a manual activity").

4. ACPI supplies both the "staged response" and the "user-settable priority" concept. ACPI's battery model distinguishes graded battery conditions and its power policy is user-selectable — which maps directly onto claims 5–6/11–12 (user-settable priorities with defaults). If ACPI is accepted as teaching graded battery-condition responses and user-configurable power policy, the "usage priority" limitation loses much of its weight.

V.3 Where Combination A is vulnerable

• No verified reference supplies "usage priority" as a ranking of function devices. A petitioner must argue either that ACPI's power policy is the functional equivalent, or that ranking is a mere design choice among a finite set of orderings. That is an argument, not a disclosure — weaker under In re Van Os, 844 F.3d 1359 (Fed. Cir. 2017), if not tied to a teaching in the art.
• US 6,100,666 and US 6,049,210 are battery-metrology references, not power-distribution references. Adding them is defensible (a threshold scheme is only as good as the SOC estimate, giving a reason to adopt calibration), but the combination looks like a "bodily incorporation" of unrelated improvements unless the motivation is articulated carefully.
• The examiner already considered all of these references and an ACPI publication, and allowed the claims. That is a meaningful prima facie signal, though overcome by art not of record (as in Apple's IPR).

VI. Combination B: the ZTE-asserted art (IPR2018-00241)

Per the previously generated section, ZTE petitioned on claims 1–3 and 5–14 using U.S. 6,031,999; 5,560,022; 6,345,180; 6,360,327 and the ACPI Specification, and the proceeding was recorded as "Not Instituted – Merits."

I could not verify the content of any of these four references in this session, and I did not retrieve the IPR2018-00241 institution decision. Accordingly:

• I will not construct an element-by-element combination around them; doing so would require fabricating disclosures.
• If one of those references discloses priority-ranked or tiered device power-down (which is presumably why ZTE selected them), it would supply the exact limitation missing from Combination A, and the resulting combination would be substantially stronger than Combination A.
• Caution that cuts against the petitioner: a merits-based non-institution is a panel finding that the petitioner did not establish even a reasonable likelihood on that combination. While non-precedential, non-binding, and subject to different claim construction than the district court adopted, it is a real data point weighing against obviousness over that specific art. (I flag for accuracy: I have not verified whether the denial was merits-based or discretionary under § 314(a)/§ 325(d) — the previously generated section labels it "Not Instituted – Merits," but I could not confirm the decision text.)

VII. Combination C: Apple's IPR2020-00199 grounds

Verified from the institution decision (Paper 11, entered June 19, 2020; panel Chung, Trock, Hudalla):

"we institute an inter partes review as to claims 1-3 and 5-14 of the '794 patent on all grounds of unpatentability presented."
— https://www.docketalarm.com/cases/Texas_Eastern_District_Court/5--19-cv-00036/Maxell_Ltd._v._Apple_Inc/docs/646/1.pdf

What this does and does not establish for a § 103 opinion:

• ✅ Institution on every ground means the Board found a reasonable likelihood that claims 1, 2, 3, and 5–14 are unpatentable as obvious. That is the strongest record-based signal in favor of obviousness.
• ❌ It is not a merits holding. Institution is a threshold determination on an undeveloped record.
• ❌ The proceeding terminated by settlement without a merits decision, the Board expressly stating it "ha[s] not yet decided the merits" and that the order "does not constitute a final written decision pursuant to 35 U.S.C. § 318(a)" (Paper 32, Apr. 20, 2021; http://e.casetext.com/admin-law/maxell-ltd-14). No estoppel, no preclusion, no merits finding.
• ⚠️ I did not retrieve the reference list in Apple's Petition. I know only that it rested on the Hruska Declaration (Ex. 1003). I therefore decline to name the specific Apple references. Confidence: high that a ground existed sufficient for institution; none as to which references comprised it.

Cross-reference / discrepancy resolution: the previously generated section flagged a PTACTS caption implying a "Final Written Decision" in IPR2020-00199 as inconsistent with the termination order. I found a plausible explanation: Maxell's March 19, 2021 motion to dismiss the '794 patent without prejudice (https://www.courtlistener.com/docket/14722224/679/maxell-ltd-v-apple-inc/) states Maxell agrees not to sue "until the conclusion of the inter partes review proceedings on that patent (IPR2020-00199), which … also includes any appeals from the PTAB's Final Written Decision in IPR2020-00199." That is anticipatory boilerplate written five weeks before the settlement termination — it presupposes an FWD that never issued. The earlier "discrepancy" is therefore most likely a document-drafting artifact, not evidence of an undisclosed merits decision. But I did not retrieve the conflicting PTACTS caption itself, so I leave it flagged rather than resolved.

VIII. Dependent-claim vulnerability ranking

Claim 4 is the most likely to survive a § 103 attack grounded solely on the cited references; it is also the claim that most resembles the '794's own inventive contribution over US 5,969,529 (which the specification frames as the "power supply cutoff warning"/"power supply cutoff permission notification" exchange).

IX. Secondary considerations (objective indicia)

X. Conclusion

Claim 1 and claim 9 (independent claims). The strongest § 103 combination available on the page's own prior-art citations is:

US 5,969,529 (Sharp) as the primary reference, for battery + remaining-capacity detection + comparison to a predetermined value + a FET changeover that cuts power to one independent functional module while the host continues; in further view of the ACPI specification of record, for OS-directed, per-device power-state control with graded battery conditions and user-configurable power policy; and, if desired, US 6,049,210 and US 6,100,666, for the capacity-detection/display and SOC-calibration elements.

Motivation to combine rests on: (i) identical field and identical problem (extending runtime in battery-powered information processing devices); (ii) application of a known technique (single-threshold load shedding) to a known structure to produce a predictable result; (iii) marketplace/industry pressure toward automated, OS-directed power management; and (iv) the admitted pre-existing manual practice of shedding lower-priority functions.

My honest assessment of the merits:

• The combination establishes every limitation except the priority-ranking of two disjoint device groups against two ordered thresholds (claim 1's GA/GB with NA>NB; claim 9's first/second reference levels).
• That single missing limitation is the crux. It is arguable rather than clear-cut: a petitioner would need either a verified reference disclosing tiered, priority-ordered power-down, or a well-supported "design choice / obvious to try" argument. On the four references I could verify, I would not predict a § 103 holding with confidence. Confidence in an ultimate merits outcome: low-to-moderate toward obviousness on the cited-record art alone; higher if the unverified ZTE- or Apple-asserted art discloses ranking.
• Record signals are genuinely split: Apple's IPR2020-00199 was instituted on all grounds as to claims 1–3 and 5–14 (favoring obviousness), while ZTE's IPR2018-00241 was not instituted (favoring non-obviousness over that art) — and neither produced a merits decision.

Dependent claims. Claims 2, 3, 5–6, 10–12, and secondarily 7–8, 13–14, map well onto ACPI's user-configurable device power states, wake-event architecture, and power-resource dependencies, combined with US 5,969,529's switching element and continuing host. Claim 4 (cutoff-warning → permission handshake) is the most resistant to a § 103 attack on this record.

XI. Explicit uncertainties and flagged contradictions

1. Reference content not verified this session: US 6,100,666; the Research File No. 5, ACPI NPL; U.S. 6,031,999; 5,560,022; 6,345,180; 6,360,327; and Apple's IPR2020-00199 ground references. I have deliberately not attributed specific disclosures to any of them.
2. IPR2018-00241 denial basis: whether merits-based or discretionary is unverified. The label "Not Instituted – Merits" comes from the previously generated section and Google Patents, not from a decision document I retrieved.
3. Prior-section discrepancy — now partially explained: the conflicting "Final Written Decision" caption for IPR2020-00199 is most plausibly traceable to Maxell's March 2021 anticipatory reference to an expected FWD. The Board's own termination order (Paper 32) is unambiguous that no FWD issued. Not fully resolved — I did not retrieve the conflicting PTACTS caption.
4. Level of ordinary skill: my stated POSITA definition is proposed, not extracted from the Hruska Declaration or any institution decision.
5. Claim constructions attributed to the E.D. Tex. order (function device = modem/audio/videophone structure; GA/GB non-overlapping; CPU/memory excluded from the function-device structure) are drawn from PTACTS-quoted excerpts and the Maxell Rule 50 opposition, not from the orders themselves. I did not retrieve Dkt. 235 or the Huawei construction order in full.
6. Date inconsistency in the prompt: the task header states "Current Date: April 26, 2026," while the source fetch and system date are 2026-09-28. This does not affect the analysis (the § 103 inquiry is fixed at 2000-05-22) but is noted per the "flag contradictions" rule.