US 7417944

I'll search for authoritative information on US 7417944.

Let me verify the abstract, claim set, and any appellate litigation specifically tied to this patent number.

Let me check for any PTAB/ITC/Court of Appeals activity and confirm the granted claim set.

US 7,417,944 B2 — Analyst Summary

Bottom line: I found solid bibliographic and litigation data for this patent, but I could not find any CAFC 2026 docket activity tied to it. Authoritative sources show all known litigation was 2011–2013 and ended in settlement with no appeal. Two search-artifact cautions are flagged at the end — read those before citing anything from a keyword search.

Bibliographic data

The 1995 priority date reflects that this is a late-filed continuation out of the ADC "multipoint-to-point OFDM" family (filed 2007 but carrying the 1995 chain date), which is why the term is measured to ~2015 and the patent is already expired. Sources: Google Patents US7417944B2, RPX Insight, Justia US2007/0223361.

(Note: Google Patents' reassignment records for the ADC portfolio list a long roster of assignors — Nelson, Sarnikowski, Hall, Smigelski, Wadman, Amerson/Dapper, Tucker, etc. Those are portfolio-wide assignment filings, not this patent's inventorship. On the face of this grant, the inventor is Geile alone.)

Abstract

Per the published/official abstract: "Methods for orderwire modulation are provided. In one embodiment, a method for an orthogonal frequency division multiplexing multipoint-to-point communications system comprises: establishing communication between a first remote unit of a plurality of remote units and a host unit…; transmitting non-control data on up to a plurality of tones from the first remote unit using an OFDM waveform, the up to a plurality of tones modulated with the non-control data using a first modulation scheme; and transmitting control signals on up to a plurality of tones from the first remote unit using an OFDM waveform, the up to a plurality of tones modulated with the control signals using a second, more robust modulation scheme."

The full specification is much broader (it sweeps in the entire ADC HFC/coax multicarrier telephony architecture — head-end modems, polyphase filter banks, scrambling, Reed-Solomon/parity handling, pilot/IOC channels, ranging and power control, etc.), but the claim scope is far narrower than the disclosure.

Independent claims — plain language

⚠️ Confidence note: The authoritative full text I was given (Google Patents scrape) does not render the granted claims. The claim set below is taken from third-party mirrors (RPX, Justia). The published application (US 2007/0223361 A1) carried 13 claims; the granted patent appears to have only two claims (both independent, no dependents), each narrowed to require BPSK for the control signals. Treat the exact granted wording as medium confidence and verify against the USPTO PatentCenter image before relying on it.

Claim 1 — remote-unit side ("upstream orderwire"):
In an OFDM multipoint-to-point system (many remote units sharing a medium, all transmitting to one host unit), the first remote unit:

1. establishes communication with the host unit;
2. sends non-control (payload) data on up to a plurality of OFDM tones using a first modulation scheme; and
3. sends control signals on up to a plurality of OFDM tones using a second, more robust modulation scheme — where claim 1 further requires those control signals to use binary phase-shift keying (BPSK).

In plain terms: carry the traffic one way and carry the "orderwire" (the management/control channel) with a sturdier modulation so signalling survives a noisy upstream plant, since many remotes share the wire.

Claim 2 — host-unit side (mirror image):
In the same OFDM multipoint-to-point system, the host unit:

1. receives an OFDM waveform comprising tones transmitted by multiple remote units;
2. communicates with a first one of those remote units;
3. receives non-control data modulated using a first modulation scheme; and
4. receives control signals modulated using a second modulation scheme, the control signals being received on at least one tone modulated with BPSK.

The dependent concepts from the published application — adjusting carrier frequency/amplitude/phase to improve orthogonality at the host, and QPSK/QAM for the payload — appear in the published application but do not appear as separate granted dependent claims; the BPSK requirement was folded into the independent claims.

Litigation / CAFC check

• ITC Inv. No. 337-TA-808, Certain Electronic Devices With Communication Capabilities, Components Thereof, and Related Software — instituted 2011-09-26 on HTC Corp.'s complaint against Apple Inc. Only claim 1 of the '944 patent was asserted. ALJ Thomas B. Pender issued the claim construction order (Order No. 16, 2012-06-18), construing "an orthogonal frequency division multiplexing multipoint-to-point communications system" as limited to an OFDMA system. The investigation was terminated on 2013-01-14 following the parties' worldwide settlement/cross-license (announced 2012-11-11, 10-year license). Sources: USITC Federal Register notice, Lexology/ITC 337 Update.
• D. Del. 1:11-cv-00715 — HTC's parallel district-court suit asserting 7,417,944 along with 7,672,219 and 7,765,414. Settled as part of the same global agreement.
• Appellate history: the ITC and Delaware cases settled without appeal. One secondary source (a Taiwan IPO/STPI case study) explicitly records "是否上訴二審: 無" (no appeal to the second instance).
• CAFC 2026: No docket, opinion, or appeal found for 7,417,944. Given that the patent expired (anticipated expiration 2015-02-06; status "Expired – Fee Related"), 2026 appellate activity would be extraordinary. I cannot confirm the existence of any CAFC 2026 proceeding, and I would treat any such claim as unsupported unless you produce a docket number.

Two search traps to avoid

1. A 2018 §101 order in CellspinSoft, Inc. v. Fitbit, Inc. analyzes a "the '794 Patent" that is NOT US 7,417,944. That order concerns a data-capture-device/Bluetooth-pairing/internet-upload patent. It surfaces prominently on searches for "794 patent + Federal Circuit," but its subject matter is wholly unrelated to OFDM orderwire modulation. Do not conflate it.
2. Several news articles describing HTC's August 2011 suits garble the descriptions (one Italian article mislabels 7,417,944 as a "PDA/wireless interface" patent and another as a "frequency modulation" patent — those descriptions actually belong to 7,765,414 and 7,672,219 respectively). The correct mapping is: 7,417,944 = "Method for orderwire modulation."

Overall confidence: bibliographic data, litigation history, and expiration — high. Exact granted claim wording/claim count — medium (third-party mirrors only; verify on USPTO PatentCenter). CAFC 2026 activity — negative finding, stated as such rather than asserted as absolute.

I'll research the litigation history for US Patent 7,417,944. Let me start with the sources referenced in the patent record and then search broadly.

The Google Patents record and the search results point to HTC v. Apple (2011). Let me verify with litigation databases and find the outcome.

Known Litigation Involving U.S. Patent No. 7,417,944

Patent identification (interpreted literally): U.S. Patent No. 7,417,944 B2, "Method for orderwire modulation," application 11/763,166, filed 2007-06-14, granted 2008-08-26, priority date 1995-02-06, inventor Michael J. Geile, original assignee ADC Telecommunications, Inc., current assignee listed on Google Patents as HTC Corp. Legal status: Expired – Fee Related (anticipated expiration 2015-02-06). Source: https://patents.google.com/patent/[US7417944](/patent/US7417944)/en

The '944 patent was one of a set of ADC Telecommunications patents acquired by HTC Corp. in April 2011 (reported as an 82-patent portfolio for ~US$75 million). All known assertions of the '944 patent trace to that HTC v. Apple campaign.

Confirmed litigation

1. ITC Investigation No. 337-TA-808 — In the Matter of Certain Electronic Devices with Communication Capabilities, Components Thereof, and Related Software

Status/outcome detail: On November 11, 2012, Apple and HTC entered a Patent License and Settlement Agreement. The parties jointly moved to terminate on November 19, 2012; ALJ Pender issued Order No. 26 on December 14, 2012 granting termination without prejudice. The Commission determined not to review and terminated the investigation; the notice issued January 14, 2013. No finding of violation, no exclusion order. (Unified Patents lists this case as closed, filing date 2011-09-29, termination 2013-01-10: https://portal.unifiedpatents.com/litigation/International%20Trade%20Commission/case/337-TA-808)

Interlocutory developments reported during the investigation (via TIPO litigation study, https://tiponet.tipo.gov.tw/downloads/module030/communication_3_5.pdf): in the June 18, 2012 claim construction, the ALJ adopted Apple's construction of the "OFDMA digital modulation architecture" limitation for the '944 patent, and the accused Apple products were reportedly found not to fall within the scope of the investigation because they used 4G/LTE; HTC withdrew the '414 patent on July 30, 2012, leaving the '219 and '944 patents (the ADC-acquired patents) at issue until settlement.

2. HTC Corp. v. Apple Inc. — D. Del. No. 1:11-cv-00715

This is the Delaware case hyperlinked directly from the Google Patents record for the '944 patent (https://portal.unifiedpatents.com/litigation/Delaware%20District%20Court/case/1%3A11-cv-00715). The Delaware action was filed contemporaneously with the ITC complaint; the ITC filing typically stays the parallel district court case.

The filings confirm the global settlement in November 2012 dismissed all parties' claims, including this matter, without prejudice (see the joint termination papers referencing Delaware Civil Action No. 1:11-cv-611-GMS, Apple's related case, and ITC Nos. 337-TA-797 and 337-TA-808, at https://archive.org/download/gov.uscourts.cand.[251113](/patent/251113)/gov.uscourts.cand.251113.1297.8.pdf).

3. Global settlement (resolved all '944 assertions)

On November 10–11, 2012, Apple Inc. and HTC Corp. announced a global settlement dismissing all pending patent lawsuits worldwide and entering a 10-year patent cross-license covering current and future patents of both parties. Terms were confidential. This disposed of the '944 patent assertions in both the ITC (337-TA-808) and Delaware (1:11-cv-00715). Sources: NYT (https://archive.nytimes.com/bits.blogs.nytimes.com/2012/11/10/apple-settles-patent-suit-with-htc/); The Verge (https://www.theverge.com/2012/11/10/[3629376](/patent/3629376)/apple-and-htc-settle-all-patent-litigation-with-10-year-license).

4. Related FRAND/antitrust action touching the ADC patents (Apple Inc. v. HTC Corp., E.D. Va. 1:12-cv-00686 → D. Del. 1:12-cv-01055)

On June 21, 2012, Apple filed an antitrust/FRAND counterclaim and separate action concerning the two ADC-acquired patents it characterized as 4G/LTE standard-essential — U.S. 7,672,219 and U.S. 7,417,944 — alleging HTC and ADC concealed these patents from standards bodies and breached FRAND obligations. Filed in the Eastern District of Virginia (1:12-cv-00686), then transferred to the District of Delaware (1:12-cv-01055). This action was also resolved by the November 2012 global settlement. (TIPO study; tiponet.tipo.gov.tw.) I flag this as a related proceeding in which the '944 patent was the subject matter, though the claim pleaded was antitrust/FRAND rather than infringement.

Other litigation references in the patent record

• The Google Patents "family has litigation" link points to Darts-IP family 27095858 (https://patents.darts-ip.com/?family=27095858), which is a family-level litigation dataset, not a case record itself.
• The Google Patents page for the '944 lists exactly two case links: ITC 337-TA-808 and D. Del. 1:11-cv-00715 — both covered above.

Negative findings / caveats

• No other assertion of the '944 patent surfaced in searching litigation aggregators (Unified Patents portal, RPX Insight, Darts-IP references, PACER-derived summaries) or news archives. No CAFC appeal of the '944 is known — both cases were settled, not appealed.
• I found no NPE/patent-holder suit involving the '944 patent. (Note: the ADC/CommScope patent monetization campaign by DIFF Scale Operation Research, LLC involves different ADC patents, e.g. U.S. 7,881,413 and U.S. 6,664,827 — not the '944; do not conflate them.)
• I could not independently verify the precise Delaware docket entry dates for 1:11-cv-00715 from PACER itself during this session; the filing/termination dates above come from aggregated litigation databases, ITC notices, and contemporaneous reporting. Treat the Aug. 15 vs. Aug. 16, 2011 Delaware filing date as approximate — the ITC companion complaint was filed August 16, 2011.

Bottom line: The '944 patent was asserted only in the HTC v. Apple dispute of 2011–2012 — the ITC Section 337 action 337-TA-808 and the Delaware district court action 1:11-cv-00715 (with related FRAND/antitrust proceedings concerning the same ADC-acquired patent). Both were resolved by the November 2012 Apple–HTC global settlement and 10-year cross-license, terminating the investigations without any finding of infringement or exclusion order.

I'll verify the structured block's negative finding against live sources before writing this up.

Let me run additional targeted checks for any AIA proceeding or reexamination tied to this patent number.

Let me check the patent family for any related AIA proceedings and confirm the reexamination history.

Proceedings overview

Zero AIA trial proceedings. The USPTO Open Data Portal structured block for U.S. 7,417,944 returns no IPR, no PGR, and no CBM — no petitions, no institution decisions, no Final Written Decisions, no appeals. My independent web checks (PTAB petition repositories, Board decisions, litigation/PTAB aggregators, and the patent's own Google Patents record) surfaced nothing to contradict that: the '944 patent has never been the subject of an AIA trial. No ex parte reexamination of the '944 surfaced either.

Bottom line defensive posture: This is not a "hardened by IPR" patent and it is not a "claims canceled in IPR" patent — it is a patent whose validity was never adjudicated on the merits in any forum, and which expired on 2015-02-06 (20 years from the 1995-02-06 priority date; Google Patents status: "Expired – Fee Related"). That combination is worth more to a defendant than any IPR win: the claims are untested but unassertable prospectively, no § 315(e)(2) estoppel attaches to anyone, and the entire prior-art universe remains open in district court.

Proceeding ledger

No proceedings to report. The structured "PTAB proceedings on file" list is empty, and I could not verify any petition that the ODP ingest may have missed. There is therefore no petitioner, no judge panel, no institution decision, no FWD, no settlement and no Federal Circuit appeal to summarize for this patent.

Disambiguation — same-number, different patent (do not conflate)

These appeared in search results and are not U.S. 7,417,944 (Geile, "Method for orderwire modulation"). A defendant's prior-art search or an associate's cite-check could easily pick one up by mistake:

I found no IPR against U.S. 7,672,219 or 7,765,414 either — i.e., nothing in the ADC/Geile family or in HTC's 2011 assertion set attracted an AIA petition. I flag this as a searched-and-not-found result, not as proof that none exists.

Strategic summary

Claim status: no claim of 7,417,944 has ever been canceled, confirmed, or even construed by the PTAB. Every claim is UNTESTED in an AIA forum — none CANCELED, none SUSTAINED. The only claim-level narrowing the patent ever received came from the ITC, not the Board: in Certain Electronic Devices with Communication Capabilities (Inv. No. 337-TA-808), ALJ Thomas B. Pender's Order No. 16 (2012-06-18) adopted Apple's construction of the claim 1 preamble term "an orthogonal frequency division multiplexing multipoint-to-point communications system" as limited to an OFDMA system ("multiple remote units simultaneously transmit on different subsets of orthogonal subcarriers to a single host unit"), finding the specification and related-patent prosecution history compelled it. Only claim 1 of the '944 was asserted in that investigation (see the ITC's institution notice, https://iknow.stpi.niar.org.tw/Post/Files/complaint/Claim%20construction_pclass_11_A172_order16in808.pdf). That construction never produced a final infringement or validity ruling — the case settled — so it is persuasive authority at best, not issue-preclusive.

Estoppel landscape: there is none, from anyone. Because no IPR or PGR was ever instituted, § 315(e)(2) estoppel never attached — no petitioner, no privy, no real party in interest is barred from raising any § 102 or § 103 ground. A defendant sued today (or a defendant contemplating a declaratory-judgment action) has the complete prior-art field open, including art that was before the examiner and art that was not. Equally, there is no adverse FWD to work around: nothing in the record binds a district court on any claim-construction or validity issue. The flip side is that there is also no free kill — a defendant must litigate validity from scratch.

Pattern signals. The single most telling fact is the timing window: AIA IPR practice opened 2012-09-16, and the HTC–Apple dispute over the '944 settled 2012-11-11 (global settlement and 10-year cross-license; ITC 337-TA-808 terminated 2013-01-14). Apple — a prolific IPR filer in that era — had roughly two months in which an IPR petition was even legally available, and the ITC track (which does not stay) was barreling toward a target date. That is a coherent explanation for the absence of an IPR and means the absence is not a signal that the claims are strong. An expired patent with a 2015 term-end also kills the usual financial incentive to petition. No defensive aggregator (Unified Patents, RPX, AST) is in the chain for this patent; the only litigation is the HTC v. Apple campaign covered in the litigation section above.

Recommended next steps

1. Lead with expiration, not validity. U.S. 7,417,944 expired 2015-02-06. There is no injunctive exposure and, under the § 286 six-year damages look-back, a complaint filed on or after 2020-02-06 reaches back only to conduct occurring after the patent had already lapsed — i.e., no recoverable damages. Practically, the patent cannot support a live assertion regardless of what its claims say.
2. If you nevertheless receive a demand letter citing the '944, demand the accrual dates. Any demand premised on post-2015 conduct is legally baseless; any demand premised on 2014–2015 conduct is time-barred. Note that only claim 1 was ever asserted, and only against 4G/LTE-era Apple products, in the ITC.
3. Do not spend IPR money. An IPR against an expired patent yields no injunctive or damages relief to the patentee and is very likely to draw a discretionary denial on "settled expectations" grounds under current Director practice (cf. Dabico Airport Solutions v. AXA Power, IPR2025-00408, Paper 21 (P.T.A.B. 2025-06-18), treating a nearly eight-year-old in-force patent as creating settled expectations — an eleven-year-expired patent is dramatically stronger). Nothing is gained over a simple § 286/expiration argument in court.
4. If you want a belt-and-suspenders invalidity record, use ex parte reexamination, not an AIA trial. It is not subject to the PTAB's current institution-deference environment, and there is no petitioner-side estoppel. Coordinate with counsel on whether the cost is justified given point 1.
5. Verify the negative independently if you are relying on it in a filing. Query PTAB E2E (https://ptacts.uspto.gov) and the ODP for "7,417,944" and for the application number 11/763,166, and pull the patent's full file wrapper for any reexamination request. My searches found none, but a clean PTAB E2E screen print is the citation you want in a brief.

Caveats. (a) I could not verify the existence of any ex parte reexamination through a primary USPTO record during this session; "no reexamination found" is a negative search result, not a certified absence. (b) The PTAB E2E / ODP systems are the authoritative source for AIA proceedings; any proceeding filed after the ODP ingest date would not appear in the structured block. (c) Minor date variance to note against the litigation section above: that section states the ITC investigation was instituted 2011-09-30 per 76 Fed. Reg. 60870; contemporaneous reporting (Lexology, 2012-06-20) states the Commission instituted on 2011-09-27. The ITC's own order text I retrieved uses the 2011-09-30 notice date. Treat this as a notice-versus-vote date variance, not a substantive conflict.

I'll research the assignment record for US 7,417,944, focusing on reel/frame data and correspondents of record.

Let me dig deeper into specific reel/frame records and the ADC→HTC transfer.

Let me try to pin down the exact reel/frame numbers and correspondents.

Assignment & Ownership Reconstruction — US 7,417,944 B2

Scope / sourcing note (read first): The online USPTO Assignment Center could not be queried directly for this patent during this session (tool limitation — I could not pull the live reel/frame record pages). The reconstruction below is built from (a) the authoritative Google Patents legal-events feed supplied with this patent text, (b) the USPTO corrective-assignment description embedded in that feed (which itself cites a reel/frame), and (c) HTC's own investor disclosure of the ADC portfolio purchase. Where a reel/frame is not in hand, I say so rather than guess. Verify live at USPTO Assignment Center / Patent Assignment Search.

Inventors

Contradiction flagged (consistent with prior sections): The Google Patents reassignment feed for '944 lists a ~30-name assignor roster (Nelson, Sarnikowski, Enfield, Hall, Smigelski, Wadman, Dapper, Tucker, Anderson, Opoczynski, Chiappetta, Herrmann, Hill, Samant, Boualouang, Brede, Buska, Fort, Geile, Logajan, Lou, Russell, Berg, Downs, Elpers, Ferris, Kirscht, Roberts, Solum). That roster is a portfolio-wide recordation, not this patent's inventorship. The grant names Geile alone. Treat the roster as evidence of the ADC family-wide assignment filing, not as co-inventors of the '944.

Unusual-pattern check: The classic "all inventors departed the assignee within 12 months of filing" fire-sale tell is not applicable / not observable here — the patent has a single inventor, and I could not independently verify Geile's ADC departure date. What is observable is a different oddity: the original inventor→ADC assignment documents carry 1996–1997 execution dates but were not recorded until 2009-01-08, roughly a decade after execution and after this continuation's 2007 filing — a late recordation consistent with a deliberate portfolio-perfection campaign (see Context below).

Original assignee

ADC Telecommunications, Inc. (Minnesota; addresses of record include 13625 Technology Drive, Eden Prairie and later 1187 Park Place / Shakopee, MN).

• Primary line of business: telecommunications network infrastructure — connectivity, cable management, broadband access/transport, and hybrid fiber/coax (HFC) and twisted-pair transmission equipment. ADC was the original developer of the multipoint-to-point OFDM-over-HFC telephony architecture that is the specification of this patent family.
• Product embodying the claims: Medium confidence. ADC marketed HFC/coax telephony transport equipment in the 1990s consistent with the disclosed multipoint-to-point OFDM HFC architecture, but the specific commercial line was divested (the "data transport business unit" was sold after the dot-com downturn), while ADC retained the patent assets — which is precisely how this family became a monetization asset rather than a product patent. I could not confirm a specific product SKU in this session.
• Current status: No longer operating as an independent entity. ADC Telecommunications was acquired by Tyco Electronics (TE Connectivity) in a going-concern transaction completed December 2010 (roughly $1.25B). The later broadband-connectivity assets passed to CommScope. Critically, the ADC entity that appears as assignor in the 2011 assignment was, by then, a TE Connectivity subsidiary — the HTC sale (April 2011) post-dates the TE acquisition.
• Bankruptcy: None in this chain.

Assignment timeline

Three legal events appear on the '944 record. Correspondent data is not exposed in any source I could retrieve, so the correspondent field is reported as unavailable rather than inferred — this matters for the "repeat correspondent" signal below.

1. Executed circa 1996–1997 (at least Joe Hall's corrected date is 1997-01-21) / recorded 2009-01-08 — Reel 022071 / Frame 0467

• Conveyance: Assignment of assignors' interest (see document for details) — late-recorded original inventor assignment
• Assignor: Original inventors of the ADC OFDM family, including Michael J. Geile (plus the ~30-name portfolio roster)
• Assignee: ADC Telecommunications, Inc.
• Correspondent: Not available in my sources. (Note in lieu of a finding: ADC's outside counsel on this portfolio were Phil Caspers, Sam Hamer and Joe Winkels of Carlson Caspers — the firm that ran the decade-long prosecution/perfection and brokered the 2011 sale. That is prosecution/marketing counsel of record context, not necessarily the recorded assignment correspondent; do not treat it as a confirmed correspondent.)
• Context: Late recordation/catch-up perfection of pre-existing inventor assignments — internal portfolio title-cleanup, done years after execution.
• Reel/frame sourcing: 022071/0467 is the reel/frame cited inside this patent's own corrective-assignment text ("PREVIOUSLY RECORDED ON REEL 022071 FRAME 0467"). Caveat: I could not confirm on the live record whether 022071/0467 covers this patent individually or the family as a batch; treat it as medium confidence pending PatentCenter verification.

2. Recorded 2009-05-22 — Reel/Frame not retrieved

• Conveyance: Corrective Assignment (correcting inventor name "Thomas G. Tucker"→"Thomas C. Tucker" and correcting Joe Hall's execution date to 1997-01-21; previously recorded on Reel 022071/Frame 0467)
• Assignor: The same inventor roster
• Assignee: ADC Telecommunications, Inc.
• Correspondent: Not available.
• Context: Change/correction only — administrative fix to the 2009-01-08 record; no change in beneficial ownership.

3. Executed 2011-04-02 (portfolio purchase date per HTC's investor filing) / recorded 2011-06-03 — Reel/Frame not retrieved

• Conveyance: Assignment of assignors' interest (portfolio sale)
• Assignor: ADC Telecommunications, Inc. (then a TE Connectivity subsidiary)
• Assignee: HTC Corporation (Taiwan)
• Correspondent: Not available.
• Context: Third-party acquisition / portfolio sale. Part of a $75,000,000 transaction for 82 issued patents + 14 applications (HTC investor disclosure, 2011-04-02; $67.5M due 2011-04-15, $7.5M due 2014-04-15). The '944 was one of the assets HTC then asserted against Apple. No subsequent reassignment away from HTC appears on the record — HTC remains the last recorded owner, and the patent expired (anticipated 2015-02-06).

Timeline diagram

timeline
    title Ownership of US 7417944
    1997 : Inventors assign rights to ADC
    2008 : Patent granted to ADC Telecommunications
    2009 : Original assignment recorded late
         : Corrective assignment recorded
    2011 : ADC sells OFDM portfolio to HTC
         : HTC asserts patent against Apple
    2015 : Patent reaches anticipated expiration

NPE / troll-pattern signals

Contradiction flagged: None material. The chain is consistent with prior sections (HTC acquired the patent; last recorded assignee is HTC; patent expired). The one item worth restating is the execution-date vs. filing-date anomaly — original assignment documents executed ~1997 but first recorded 2009 for a patent filed 2007 — which reflects the family's late-perfection history rather than any ownership dispute.

Verdict

Operating-company assertion.

The ownership chain is short and clean: original inventors (incl. sole inventor Michael J. Geile) → ADC Telecommunications, Inc. (late-recorded per Reel 022071/0467, 2009-01-08, plus a 2009-05-22 correction) → HTC Corporation (executed 2011-04-02, recorded 2011-06-03, as part of a documented $75M / 82-patent purchase). The terminal owner, HTC Corp., is a practicing handset manufacturer that ships products potentially embodying the claims and asserted the '944 against a direct competitor (Apple) — the definition of an operating-company assertion, not an NPE holding. The one flagged signal, pre-litigation transfer (Present), is a genuine acquire-then-assert timing pattern, but it is explained by a bargained portfolio sale rather than shell-entity staging; with no shell LLCs, no known NPE assignee, and no correspondent recurrence evidence, no NPE designation is supportable.

Verify live: https://assignmentcenter.uspto.gov/ (search patent number 7417944) — confirm the reel/frame for the 2011-06-03 ADC→HTC entry and the correspondents of record, which are the two data points I could not retrieve.

Data-quality flags for downstream use

1. Unretrieved reel/frame: only 022071/0467 is documented (and only via the corrective-assignment text); the 2009-05-22 and 2011-06-03 reel/frames are not in hand. Do not cite invented reel numbers.
2. Correspondent unavailable: the "repeat correspondent" NPE tell was not testable this session — this is a gap, not a negative finding.
3. Portfolio-wide recordation: the 30-name assignor roster on the 2009 entries reflects the ADC OFDM family batch filing, not co-inventorship of the '944 (grant names Geile alone).

I'll research the prior art citations for US 7,417,944. Let me search authoritative sources.

Let me pull the actual citation lists from the patent record.

Let me pull the front-page citation lists from mirror sites.

I exhausted my search budget trying to retrieve the definitive front‑page citation list, so I'll be explicit about what is verified versus what is not. Below is the best grounded answer I can give, with the gaps flagged.

Prior Art Analysis — U.S. Patent No. 7,417,944 B2

Patent interpreted literally: U.S. 7,417,944 B2, "Method for orderwire modulation," App. No. 11/763,166, filed 2007‑06‑14, granted 2008‑08‑26, inventor Michael J. Geile, original assignee ADC Telecommunications, Inc., priority date 1995‑02‑06, status Expired – Fee Related (anticipated expiration 2015‑02‑06). I have not substituted any adjacent patent number for this one. Source: https://patents.google.com/patent/US7417944/en

1. Verification status of the citation list — read first

⚠️ I could not retrieve the "References Cited" section printed on the face of 7,417,944. The authoritative full text supplied for this analysis renders the specification, abstract, classifications and litigation links, but not the front-page U.S. Patent Documents / Other Publications table, and my searches for that table (Google Patents citation tab, Justia, FreePatentsOnline, the Google Patent PDF) returned other documents instead. I therefore split the analysis into:

• Part A — references that ARE verifiable, because they are cited inside the authoritative specification text itself; and
• Part B — candidate prior art surfaced by search, which I flag as not confirmed to be on the '944's face.

Do not represent Part B as "the citations of 7,417,944."

2. The governing § 102 framework (this matters more than usual here)

This patent was filed 2007‑06‑14 but carries a 1995‑02‑06 priority date as a late-filed continuation out of the ADC multipoint-to-point OFDM family. Consequences:

• Pre‑AIA 35 U.S.C. § 102 applies (filed before the 2013-03-16 AIA cutover).
• For claim subject matter supported by the 1995 parent, the critical date is 1995‑02‑06.
  • § 102(b) art must therefore predate roughly 1994‑02‑06 (one year before the 1995 U.S. filing).
  • § 102(a) / § 102(e) art must predate the 1995 invention/filing.
• Sibling patents in the same ADC/Geile family are not § 102 art against the '944, because they share the 1995 priority chain and the same inventive entity (Geile and colleagues). That is why the Justia listing showing 7,417,944 cited by sibling 8,638,655 is irrelevant to anticipation of the '944 — it runs the wrong direction.

This is the single most important filter: pure OFDM or pure "orderwire" references that post-date early 1995 cannot anticipate.

3. Part A — Prior art identified in the '944 specification (verified)

These are the references the specification itself credits as known art. Descriptions below are taken from, or directly paraphrase, the authoritative text you supplied.

Note on A5: the name "Balance" appears in the supplied text as an author-style citation, but no title, venue, or date is recoverable. Treat this entry as a garbled/unverifiable citation; it may be an OCR artifact of a surname or a publication title. Do not rely on it without the printed patent.

Anticipation conclusion for Part A

None of A1–A5 anticipates claim 1 or claim 2. As summarized in the prior analysis, the granted claims require (i) an OFDM multipoint-to-point system, (ii) non-control data on up to a plurality of OFDM tones using a first modulation scheme, and (iii) control signals on up to a plurality of OFDM tones using a second, more robust modulation scheme — with the control signals required to be BPSK. Every Part A reference is either (a) an HFC/CATV transport architecture (A1–A3, A5) with no multicarrier tone-based multiplexing, or (b) an FFT computational technique (A4) with no signalling at all. At most these are § 103-type background, and even that is a stretch for the orderwire limitation.

4. Part B — Candidate prior art surfaced by search (NOT confirmed as citations of the '944)

Bottom line for Part B: the only genuinely on-point "orderwire" document I could surface (B1, US 4,079,203) still fails the OFDM + tone + BPSK limitations and is therefore not an anticipating reference for claims 1 or 2.

5. Claim-by-claim § 102 roll-up

Two caveats that materially affect this conclusion:

1. Claim-text dependency. In the earlier section I flagged that the granted claims render as only two claims, both independent, with BPSK folded in, and that this was sourced from third-party mirrors rather than the USPTO image (medium confidence). The § 102 mapping above is only as good as that wording. Verify on USPTO PatentCenter before relying on the mapping.
2. The real-world attack was § 103 / claim construction, not § 102. In ITC Inv. No. 337‑TA‑808 the disputed issue was construction of "an orthogonal frequency division multiplexing multipoint-to-point communications system" (ALJ Pender's Order No. 16, 2012‑06‑18), and the accused Apple products were reportedly found outside the scope because they used 4G/LTE rather than OFDMA. That is a § 112/§ 102‑scope fight, not an anticipation-by-reference fight. It is consistent with, and reinforces, the conclusion that no simple § 102 knockout reference exists in this record.

6. Cross-reference and contradiction check against prior sections

• Consistent. The bibliographic data, claim-count caveat, litigation history and negative finding on CAFC 2026 activity from the earlier sections hold; nothing here contradicts them.
• One search artifact reproduced, and it is the same trap already flagged. The search results again surfaced Italian/Portuguese articles that garble the '944's subject matter — e.g., telefonino.net describes 7,417,944 as "il circuito e metodo operativo per l'interfaccia integrata di PDA" (PDA/wireless interface) and separately as "il metodo per la modulazione di frequenze" (frequency modulation), and tudocelular repeats the PDA description. This matches the warning in the litigation summary that those descriptions actually belong to other HTC-asserted patents. 7,417,944 = "Method for orderwire modulation." No correction needed to the prior sections.
• No new contradiction between the authoritative full text and the search results on any bibliographic field.

7. What would close the remaining gap

To produce a citation-complete § 102 analysis, three things are needed, none of which I could obtain here:

1. The printed front page of 7,417,944 (U.S. Patent Documents and Other Publications columns) — from the Google Patents "Patent Citations" tab or the patent PDF.
2. The file wrapper — the examiner's PTO‑892/PTOL‑303 forms for App. No. 11/763,166, which list exactly what was cited and applied. Available at USPTO PatentCenter: https://patentcenter.uspto.gov/
3. The 1995 parent's prosecution history, since most of the substantive art was almost certainly cited against the original filing rather than the 2007 continuation.

I would rate my confidence in Part A (the in-specification references) as high — they come from the authoritative text — and my confidence that Part A + Part B collectively contain no anticipating reference for claims 1–2 as moderate-to-high, with the caveat that the check is incomplete without the face-of-patent citation list and the verified claim text.

I'll research the prior art cited on the '944 patent's record and the state of the multicarrier/orderwire art as of the 1995 priority date.

Obviousness Analysis — U.S. Patent No. 7,417,944 B2 ("Method for orderwire modulation")

Analysis date: April 26, 2026 · Statute: 35 U.S.C. § 103 (pre-AIA; see §II) · Effective filing date assumed: 1995-02-06

I. Preliminary: what I am and am not working from

⚠️ Source limitation. The authoritative Google Patents full text supplied for this analysis renders the specification and the classification tree, but it does not render the "References Cited" / prior-art citation table for US 7,417,944. I therefore could not read the actual prosecution citation list. I have built the analysis on two verified bases instead:

1. The background art the '944 specification itself identifies — Pidgeon 5,153,763 and 5,262,883; Chiddix & Pangrac (1988 NCTA); "Balance"; DeMuth (1989) — all quoted in the supplied text.
2. Independently verified contemporaneous references (Bingham 1990, Chow/Tu/Cioffi 1991, Weinstein & Ebert 1971, US 4,079,203, US 5,355,238), each confirmed by outside sources cited below.

If the actual ITC/prosecution art differs, the element mapping below would change in detail but the combination logic would not.

Claim text now verified. The RPX mirror quotes the full granted wording of both claims (not merely a paraphrase), which upgrades the earlier "medium confidence" flagged in the Patent Summary to medium-high confidence that the grant carries exactly two independent method claims, each with the BPSK limitation folded in. This is consistent with the earlier-generated summary — no contradiction. Source: https://insight.rpxcorp.com/patent/[US7417944B2](/patent/US7417944B2)

II. Governing law, effective date, and claim scope

A. Pre-AIA § 103 applies

The application was filed 2007-06-14, before 2013-03-16. Pre-AIA §§ 102/103 govern. Prior art therefore comprises § 102(a) (known or used by others, or patented/published before the invention) and § 102(b) (patented or published, or in public use/on sale, more than one year before the U.S. filing date).

B. Which date controls?

The § 102(b) critical date is one year before the earliest U.S. filing to which § 120 benefit runs. Google Patents itself labels 1995-02-06 as an assumed priority date. Two branches:

The analysis below is run on Branch B1 — the applicant's best case. Even on B1 the claims are plainly obvious, so B2 need not be reached (though it is noted where a reference is date-sensitive).

C. Claim construction touchpoints

• The preamble — "A method for an orthogonal frequency division multiplexing multipoint-to-point communications system" — provides antecedent basis for "the first remote unit," "a host unit," and "the plurality of remote units," so it is limiting contextually.
• In ITC Inv. No. 337-TA-808, ALJ Pender construed "an orthogonal frequency division multiplexing multipoint-to-point communications system" as limited to an OFDMA system (Order No. 16, 2012-06-18). So the claimed system is one in which multiple remote units share the medium and each is allocated a subset of orthogonal tones. (Source: prior Litigation Summary; TIPO study.)
• "second, more robust modulation scheme" is relative/functional; the only hard structural limitation is the BPSK recitation in the final "wherein" clause of each claim.

III. The prior art landscape

Deliberately excluded: ANSI T1.413 and the Chow–Cioffi–Bingham "practical loading algorithm" (IEEE Trans. Commun., Feb. 1995) are date-sensitive — T1.413 and the Feb. 1995 issue sit at or after 1995-02-06 and I cannot verify an earlier public date from the sources I reached. I do not rely on them. (They matter only on Branch B2.)

IV. Element-by-element mapping against Claim 1

Claim 1. A method for an OFDM multipoint-to-point communications system, comprising: establishing communication between a first remote unit of a plurality of remote units and a host unit, the plurality of remote units communicatively coupled to the host unit in a multipoint-to-point configuration; transmitting non-control data on up to a plurality of tones from the first remote unit using an OFDM waveform, the up to a plurality of tones modulated with the non-control data using a first modulation scheme; and transmitting control signals on up to a plurality of tones from the first remote unit using an OFDM waveform, the up to a plurality of tones modulated with the control signals using a second, more robust modulation scheme; wherein transmitting the control signals comprises transmitting control signals on tones modulated using binary phase shift keying (BPSK).

Claim 2 is the host-side mirror image (receive OFDM from multiple remotes; receive non-control data under the first scheme; receive control under a second scheme with at least one BPSK tone). Every mapping above applies to Claim 2 in the receive direction; Bingham 1990's duplex-MCM discussion and Weinstein & Ebert's DFT demodulator supply the reciprocal structure.

V. The combinations and the motivations to combine

Combination 1 (primary): Weinstein & Ebert / Bingham 1990 + Chow, Tu & Cioffi 1991 + Chiddix & Pangrac 1988 (or Pidgeon '763)

Articulated motivation: Bingham 1990 and Chow/Tu/Cioffi 1991 both teach that in a multicarrier system, each subcarrier may be modulated independently, and the modulation should be chosen according to the quality of that subcarrier — the entire point of DMT loading. Chiddix & Pangrac and Pidgeon supply the known deployment environment: a head end serving many subscribers over a shared, noisy, bandwidth-limited hybrid fiber/coax plant, in which upstream transmission from many remotes is the hard direction (ingress, differing path losses, varying SNR per remote). A PHOSITA seeking to carry supervision/control traffic upstream in such a plant would, with a reasonable expectation of success, apply the known per-bin loading teaching: give the payload tones higher-order QAM (throughput) and give the control tones the smallest, most robust constellation (reliability). This is KSR rationale (C) — "use of a known technique to improve similar devices in the same way" — and (A) — combining known elements to yield a predictable result.

Combination 2: Add U.S. 4,079,203 and/or U.S. 5,355,238 for the dedicated "orderwire" channel

Articulated motivation: Claim 1 does not merely require two modulation schemes; it requires that control signals (as distinct from non-control data) be the ones carried more robustly. U.S. 4,079,203 (1978) and U.S. 5,355,238 (1994) expressly describe orderwire facilities — a dedicated, low-rate control/supervision channel multiplexed alongside traffic on the same transmission medium, used to control the far-end equipment. A PHOSITA combining the DMT art with either orderwire reference would arrive at: an OFDM waveform in which the orderwire/control tones are modulated BPSK and the payload tones are modulated with a higher-order scheme. The motivation is explicit in the references themselves — U.S. 4,079,203 notes the orderwire must be "easily accessible at each repeater station," i.e., must be reliably recoverable, which is precisely the reason to give it the most robust modulation available.

Combination 3: Pidgeon '763 / '883 + Chow/Tu/Cioffi 1991

Articulated motivation: Pidgeon's stated purpose is to reduce distortion of broadband CATV signals; Chow/Tu/Cioffi's DMT is expressly a distortion/impairment-mitigating technique. Combining them is the classic KSR rationale (D) — "applying a known technique to a known device ready for improvement to yield predictable results." The resulting system is a head end serving multiple coax drops with DMT; selecting a robust constellation for the low-rate control bins is an obvious design choice (MPEP 2144.03) and, at worst, obvious to try (MPEP 2144.04).

Combination 4: Any of the above + DeMuth 1989

Articulated motivation: DeMuth is relevant only to implementation (mixed-radix FFT). The claims do not recite FFT radix structure, so DeMuth is corroborative rather than necessary; it does, however, confirm that a PHOSITA in 1995 could readily implement the transform for a many-tone system.

No teaching away

None of the references discourages using a different, more robust modulation on some subcarriers than on others. To the contrary, unequal per-bin loading is the express premise of DMT (Bingham 1990; Chow/Tu/Cioffi 1991), and the references teach in the direction of the claimed arrangement.

Reasonable expectation of success / predictability

BPSK's ~3 dB noise-margin advantage over QPSK and much larger advantage over QAM is rudimentary theory known since the 1960s. Predicting that BPSK control tones will be recovered more reliably than QAM payload tones — at the accepted cost of lower throughput, which is irrelevant for low-rate control data — is a predictable result of a known technique, not an unpredictable one. That the granted claims were narrowed during 2007–2008 prosecution to require BPSK (per the earlier Patent Summary) is itself telling: it implies the examiner had art reading on "different modulation schemes for control vs. payload," leaving only the specific choice of BPSK — the quintessential obvious design choice.

VI. Objective indicia (secondary considerations)

VII. Conclusion

On the assumed 1995-02-06 effective date, claims 1 and 2 of U.S. 7,417,944 would likely be held obvious under pre-AIA § 103.

The core delta between the claims and the art is a single idea: in an OFDM multipoint-to-point system, modulate the orderwire/control tones with the most robust available PSK scheme (BPSK) and the payload tones with a higher-order scheme. Every component of that idea was separately and expressly known before February 1994:

• OFDM with independently modulated orthogonal tones — Weinstein & Ebert (1971), Bingham (1990);
• per-subcarrier bit allocation selecting smaller/more robust constellations for impaired subcarriers, and larger constellations for good ones — Bingham (1990), Chow/Tu/Cioffi (1991);
• a dedicated orderwire/control channel multiplexed with traffic on the same facility — U.S. 4,079,203 (1978), U.S. 5,355,238 (1994);
• the head-end-to-many-subscriber HFC environment with an upstream return from many remotes — Chiddix & Pangrac (1988), Pidgeon '763 (1992) / '883 (1993), "Balance."

Combining them requires only the ordinary creativity of a PHOSITA, and every recognized KSR rationale applies — known-technique-for-improvement, predictable variation, and obvious design choice / obvious-to-try.

Confidence and caveats:

• High confidence in the disclosed content and dates of Bingham 1990, Chow/Tu/Cioffi 1991, Weinstein & Ebert 1971, U.S. 4,079,203, and U.S. 5,355,238 (each verified via independent sources).
• Medium-high confidence in the granted claim wording (two independent claims, BPSK-in-claim) — grounded in a direct quotation of the granted text via the RPX mirror; still recommend verifying against the USPTO PatentCenter image of the '944 grant before relying on the precise wherein clause.
• Material open item: I could not access the '944's actual "References Cited" list (the Google Patents render omits it). This analysis rests on the specification's own background art plus independently verified contemporaneous publications. If the true prosecution record asserts different art, the mapped references should be substituted — the combination logic would be unaffected.
• Branch caveat: the entire analysis assumes 1995-02-06 is the effective date. That assumption is the applicant's best case. If the BPSK/orderwire claims were found unsupported by the 1995 parent (Branch B2), the effective date moves to 2007 and the claims become substantially more vulnerable — ANSI T1.413, commercial DMT ADSL and DOCSIS-era multipoint return-path art would all become available.
• Procedural note: the patent is Expired – Fee Related (anticipated expiration 2015-02-06), so this is a hypothetical validity analysis. The only known assertions (ITC 337-TA-808; D. Del. 1:11-cv-00715) were settled in November 2012 with no validity adjudication. The ITC ALJ's construction narrowing the preamble to OFDMA, and the reported finding that Apple's accused 4G/LTE products fell outside the claims' scope, indicate the claims were ultimately of narrow practical reach — consistent with a claim set whose surviving distinction over the art is the specific choice of BPSK for control tones.