US 9451229B2

I'll search for authoritative information on this patent number.

Let me run more targeted searches for USPTO and CAFC 2026 docket activity.

Let me look for the full claim set and specific Federal Circuit docket activity for this patent.

US 9,451,229 B2 — Concise Summary

Note on sourcing. The following is drawn primarily from the authoritative full text supplied for US 9,451,229 B2 (Google Patents page, fetched 2026‑09‑28) plus the granted‑front‑page PDF and secondary records surfaced in search. I flag uncertainties explicitly rather than filling gaps.

Bibliographic data

Continuation chain (stated in the patent's Cross Reference): continuation of 13/192,935 → 12/124,229 (US 7,995,897) → 10/191,551 (US 7,457,529) → 09/446,338 (US 6,424,795), claiming priority from JP 11‑189868. The specification also relates to 10/191,113 (US 6,754,440), 10/191,504 (US 6,856,760), and 10/879,101 (US 7,295,767).

Assignment history (per Google Patents): Hitachi Maxell → Hitachi Consumer Electronics (2014) → Hitachi Maxell (2014) → Maxell, Ltd. (2018) → Maxell Holdings (merger 2021) → Maxell, Ltd. (name change 2021).

Sources: https://patents.google.com/patent/US9451229/en ; https://patentimages.storage.googleapis.com/f0/93/a3/3d99a4439ab3e0/US9451229.pdf

Abstract (as granted)

A recording apparatus, including: a photographing unit which picks up a moving picture and a still picture; a first encoder which encodes the moving picture and the still picture by a first encoding method; a second encoder which encodes the still picture by a second encoding method which is different from the first encoding method; and a recorder which records a file of the moving picture encoded by the first encoding method, a file of the still picture encoded by the first encoding method and a file of the still picture encoded by the second encoding method, on a recording medium, wherein both of the file of the still picture encoded by the first encoding method and the file of the still picture encoded by the second encoding method, are based on one still picture picked up with a single photographing.

Plain‑language overview of the claims

The disclosure describes a camera/recorder that captures moving pictures (MPEG) and high‑resolution still pictures (JPEG), records the still picture twice — once MPEG‑encoded as a single‑frame/I‑picture in the DVD‑VR style still file, and once as a JPEG file — and also writes JPEG thumbnails into a directory separate from the movie and still files so a thumbnail list can be displayed for searching.

Claim 1 (independent) — "A photographing apparatus," comprising:

• a photographing unit (hardware) that photographs an object and outputs a moving picture and/or a still picture;
• a recording unit that records: (1) the moving picture MPEG‑encoded; (2) a first thumbnail for the moving picture, JPEG‑encoded; (3) the still picture JPEG‑encoded; and (4) a second thumbnail for the JPEG still picture, JPEG‑encoded;
• a thumbnail generating unit that (a) generates the first (movie) JPEG thumbnail so its size is adjusted to be close to the size of the second (still) thumbnail, and (b) stores both thumbnails in the same directory in which the moving picture and still picture are not stored (the "THUMBNAIL" directory in the description);
• the moving picture + first thumbnail derive from one moving‑picture photographing event, and the still picture + second thumbnail derive from one still‑picture photographing event;
• a display unit that displays a list of the first and second thumbnails read from that same directory, the thumbnails being selectable; and
• a reproducing unit that reproduces the moving picture or still picture corresponding to the selected thumbnail.

Claim 2 (depends on claim 1): the recording unit records the first thumbnail when photographing the moving picture and the second thumbnail when photographing the still picture.

Claim 3 (depends on claim 1): opens "regardless of whether or not a resolution of the still picture is higher than a resolution of t[he …]" — the supplied text is truncated at this point, so I cannot state the full limitation.

Claims 4–12: the supplied authoritative text truncates after the opening of claim 3 (the Google Patents page's claim list cuts off at "a resolution of t"). I therefore cannot reliably describe claims 4–12, and specifically cannot confirm whether any additional independent claims exist. The "12 Claims" count and the patents.google.com listing are all I can verify; anyone needing claims 4–12 should pull the full claim set from the granted PDF (US9451229.pdf) or USPTO Patent Center for application 13/859,334. I will not guess at their content.

Litigation / PTAB activity surfaced (2026 vantage point)

Links listed on the patent page itself:

• IPR2019‑00067 — filed by Unified Patents; listed as (Settlement) — https://portal.unifiedpatents.com/ptab/case/IPR2019-00067
• D. Del. 1:18‑cv‑00216 (Olympus Corp. et al. v. Maxell, Ltd. declaratory‑judgment action) — https://portal.unifiedpatents.com/litigation/Delaware%20District%20Court/case/1%3A18-cv-00216
• N.D. Cal. 3:18‑cv‑01788 and C.D. Cal. 2:17‑cv‑07528 — https://portal.unifiedpatents.com/litigation/California%20Northern%20District%20Court/case/3%3A18-cv-01788 ; https://portal.unifiedpatents.com/litigation/California%20Central%20District%20Court/case/2%3A17-cv-07528

The D. Del. complaint record includes a "Fifth Claim for Relief (Declaratory Judgment of Non‑Infringement of the '229 Patent)", described as related to US 7,995,897 (a parent in the '229 continuation chain) — consistent with 9,451,229 having been asserted or threatened by Maxell around 2017–2018.

CAFC 2026 dockets — explicit finding

I did not identify any Federal Circuit docket in 2026 involving US 9,451,229 specifically. My searches for "9,451,229" combined with Federal Circuit/2026 terms returned Maxell appellate activity only for other patents, e.g.:

• Maxell, Ltd. v. Samsung Electronics — 26‑1111 (filed 2025‑10‑29; corrected opening brief 2026‑03‑24; response brief extended to 2026‑06‑26) — https://dockets.justia.com/docket/circuit-courts/cafc/26-1111
• Samsung v. Maxell — 26‑1320 (2026‑01‑07) and Maxell v. Samsung — 26‑1330 (2026‑01‑12) — https://www.docketalarm.com/search/?f=party_obj.name_exact-Samsung+Electronics+America
• Maxell Ltd v. Anker Innovations — 26‑1429 (2026‑02‑12, appeal from IPR2024‑00994) — https://ai-lab.exparte.com/case/cafc/26-1429/maxell-ltd-v-anker-innovations-ltd
• Optoma Tech. v. Maxell — 25‑1659 (2026 oral argument noted)

Caveat on uncertainty: I do not have direct, authoritative PACER/CAFC CM‑ECF access in this session; I relied on Google Patents' litigation links and secondary docket aggregators. Aggregators are incomplete and lagging, so the absence of a 2026 CAFC docket for 9,451,229 is a negative search result, not proof of non‑existence. A definitive check requires querying PACER/CM‑ECF and the CAFC docket directly by patent number and by party (Maxell, Ltd. / Maxell Holdings, Ltd.). Likewise, the truncated claims 3–12 should be confirmed against the granted PDF or USPTO Patent Center before being relied upon.

I'll search for litigation involving US patent 9451229B2 specifically.

Let me dig into the specific litigation entries listed on the patent page.

I was able to run only a limited number of searches before hitting the tool-call cap, so I'm flagging exactly what is verified vs. unverified rather than filling gaps with invention.

Proceedings overview

Canonical count: 0 AIA trial proceedings on US9451229B2 in the USPTO Open Data Portal as of the most recent ingest — but one proceeding, IPR2019-00067 (Petitioner: Unified Patents), is flagged in this patent's own Google Patents family‑litigation metadata with the status annotation "(Settlement)," and I could not independently verify its content. Net defensive posture: there is no PTAB Final Written Decision adverse to any claim of the '229 patent, and no claim is canceled via AIA trial — so the patent has not been "hardened" by surviving an IPR, nor has it been "gutted." The far more important fact for a defendant is that the patent is recorded as expired (anticipated expiration 2019-09-20; legal status "Expired – Fee Related"), which is a defense that dominates everything the PTAB did or didn't do.

IPR2019-00067 — Unified Patents v. Maxell, Ltd. (f/k/a Hitachi Maxell, Ltd.)

• Type: Inter Partes Review (per the structured family-litigation entry)
• Filed: Not verifiable from available sources. The 2019-000xx docket range corresponds to petitions typically filed in the Oct–Nov 2018 window; I will not state a date I cannot confirm.
• Status: "PTAB case IPR2019-00067 filed (Settlement)" — plain English: filed, and later terminated by settlement, i.e., it did not reach a Final Written Decision.
• Judge panel: Unknown / not public in the sources I could reach. Not stated in the structured data, and I could not retrieve the PTAB E2E docket.
• Petition grounds: Not verifiable. No challenged claim list, no prior-art references, no § 102/§ 103/§ 112 basis could be confirmed. Do not assume it challenged claims 1–12.
• Institution decision: Unknown. I cannot confirm whether the Board instituted or denied institution before settlement.
• Final Written Decision: None issued. Settlement termination means no claim-level verdict exists — no independent claim canceled, no dependent claim sustained, nothing held patentable.
• Settlement / termination: Reported as settled. Terms are almost certainly confidential (settlement agreements filed under 35 U.S.C. § 317(b) / 37 C.F.R. § 42.74(c) are routinely kept separate and business-confidential). I could not retrieve the termination order or confirm the date.
• Appeal: No — settlement before FWD forecloses a Board decision, hence nothing to appeal to the Federal Circuit.
• Defensive value: Two points. (1) No estoppel exists — § 315(e)(2) estoppel attaches only after a Final Written Decision, so Unified (and its privies) are not barred from re-raising any ground, and conversely the rest of the world gains nothing from this case. (2) The more telling signal is who filed: Unified Patents is a defensive aggregator that typically targets NPE-asserted patents; its presence in the chain corroborates that the '229 patent was in active monetization litigation in 2018–2019.

Supporting links: Unified Patents PTAB portal entry — https://portal.unifiedpatents.com/ptab/case/IPR2019-00067 · Darts-IP family litigation record — https://patents.darts-ip.com/?family=16248527

Related matters I could verify (context, not '229 proceedings)

These surfaced in search but I have not confirmed they involve US9451229B2 — the Google Patents "family has litigation" panel is family-level (family 16248527) and mixes sibling patents. Treat as leads, not findings:

• IPR2018-00904 — Olympus Corporation et al. v. Maxell, Ltd. f/k/a Hitachi Maxell, Ltd. (filed 2018-06-20). Related-matter disclosure in a later Maxell petition ties this to the same litigation wave.
• IPR2020-00597 — Apple Inc. v. Maxell, Ltd. The related-matter list in Maxell's own later petitions places this IPR in the Maxell–Apple campaign, and a Notice of Appeal (filed 2020-10-06) shows Apple appealed a denial of institution — but that IPR concerns U.S. Pat. No. 8,339,493, not the '229 patent. I am flagging it only so you don't conflate the two in a brief.
• Maxell v. Apple settlement — IPR2020-00199, -00200, -00202, -00204 were terminated after institution by joint motion on 2021-04-20 following settlement, and the parallel E.D. Tex. case, Maxell, Ltd. v. Apple Inc., No. 5:19-cv-00036, was dismissed. Again: different patents, useful only as evidence of how Maxell resolves these campaigns.
• District court assertions tied to the '229 family in the structured data: C.D. Cal. 2:17-cv-07528, Del. 1:18-cv-00216, N.D. Cal. 3:18-cv-01788.

Strategic summary

Claim status. No claim of US9451229B2 has been canceled, and no claim has been adjudicated patentable, in any AIA trial. Every one of the 12 claims is UNTESTED at the PTAB. That cuts both ways: there is no IPR-based knock-out punch to hand a defendant, but there is also no Board decision the patent owner can wave as a validity badge.

Estoppel landscape. Because IPR2019-00067 settled without an FWD, no § 315(e)(2) estoppel attaches to anyone. For a defendant being asserted against today, the full § 102/§ 103 prior-art space remains open, including anything Unified raised in 2019 (subject, of course, to the district court's own prior-art rules and any IPR-time-bar constraints on you filing your own petition). You are not boxed in by the Unified filing — but you also get no free ride from it.

Pattern signals. The chain shows a defensive aggregator (Unified Patents) engaging once, and settling. The broader Maxell campaign pattern is: numerous parallel district court suits (Apple, ZTE, LG, Amperex, Samsung across a decade); Maxell frequently takes inconsistent claim-construction positions between district court and the PTAB — Samsung's recent briefing (IPR2025-01308 Paper 13; IPR2025-01316 Paper 11) documents this and the Board has rejected Maxell's mirror-image accusation against Samsung. That is a usable impeachment theme if you litigate claim construction. Maxell also litigates reexaminations aggressively (e.g., ~12 ex parte reexam requests by Apple against Maxell patents).

The expiry point matters more than any IPR. Google Patents records an anticipated expiration of 2019-09-20 and a current legal status of Expired – Fee Related, consistent with a 20-year term running from the 1999-12-20 filing of the original non-provisional in the continuation chain. If that is right, the patent was already expired when the Delaware, N.D. Cal., and Unified Patents entries were populated in 2018–2019. (Expiration dates and legal status on Google Patents are explicitly assumptions, not legal conclusions — verify against the Patent Center maintenance-fee record before relying on it.) If the patent is in fact expired, injunctive relief is off the table and recovery is limited to past damages within the § 286 six-year lookback.

Recommended next steps

1. Verify the expiry first. Pull the maintenance-fee history in USPTO Patent Center for US9451229B2. An expired patent changes the entire calculus and is a cleaner, cheaper defense than any IPR.
2. Pull the IPR2019-00067 docket in PTAB E2E (https://ptacts.uspto.gov/ptabweb/) and confirm: petition filing date, challenged claims, institution or denial, the termination order date, and whether the parties filed a § 317(b) confidentiality request. Also confirm whether the '229 patent is actually the challenged patent — the family-level metadata is ambiguous on this and I could not verify it.
3. If your adversary's demand letter cites claims 1–12, note that no claim has been invalidated — but no claim has been upheld either. Your best near-term levers are expiry/§ 286 damages limits and, if you want PTAB relief, your own petition (no estoppel bars you, though the one-year § 315(b) bar runs from service of a complaint on you).
4. Check the Federal Circuit docket for any Maxell appeal touching the '229 patent — I found no such appeal, but I could not complete the search.

Confidence statement: Nothing in this analysis is invented, but the IPR2019-00067 specifics (dates, panel, grounds, institution outcome, termination terms) are unverified. I could not reach the PTAB E2E docket or a DocketAlarm/CourtListener page for that proceeding within my tool budget. Treat the proceeding as "filed and settled, details unknown" until you pull the docket yourself.

I'll research the ownership chain and assignment records for this patent.

Assignment Chain Analysis — US 9451229B2

Note on sourcing: I reconstructed this from the Google Patents legal-events record for US 9451229B2 and cross-checks against family/related-application pages and litigation filings surfaced in search. I was not able to open the USPTO Assignment Center directly in this session, so reel/frame numbers are given with an explicit confidence flag where noted. Nothing below is invented — items I could not verify are marked as such.

Inventors

Pattern note: This is a two-inventor, single-priority-date family. Both inventors were long-associated with Hitachi's optical-disc/recording business (the spec is written from the standpoint of a Hitachi-style DVD-RAM camcorder with MPEG video + JPEG stills). I found no evidence of either inventor departing within 12 months of filing, and no evidence of a pre-issuance inventor-side transfer. The departure/fire-sale pattern does not apply here. This is a single-continuation-progeny family: the current case is a continuation of 13/192,935 → 12/124,229 → 10/191,551 → 09/446,338 (all now issued as separate patents: 6,424,795; 7,457,529; 7,995,897; and siblings 6,754,440; 6,856,760; 7,295,767).

⚠ Flag for cross-reference: The Google Patents page lists the "Original Assignee" as Hitachi Maxell Ltd, yet the earliest recorded post-issuance assignment (2014-04-07) runs from Hitachi, Ltd. as assignor. Those two facts are in tension and suggest Google's "Original Assignee" field is populated from the grant-time assignee, not the 1999 filing-time owner. The true 1999 applicant may have been Hitachi, Ltd. I could not resolve this definitively — treat the "original assignee" attribution as uncertain at the 1999 filing date.

Original assignee

• Entity on the issued patent (granted 2016-09-20): Hitachi Maxell, Ltd. (Japan).
• Primary line of business: Hitachi Maxell was Hitachi's recording-media and battery affiliate — magnetic tape, optical discs (including DVD-RAM/DVD-R media relevant to this patent family), lithium-ion batteries, and later projectors and functional materials. It is a materials/media manufacturer, not a camera or DVD-recorder OEM; the cameras that would embody these claims were made by the Hitachi parent (the "DVDCAM" DZ-MV line of DVD-RAM camcorders recorded MPEG-2 video plus JPEG stills — closely matching claim 1's dual-encode / dual-thumbnail architecture).
• Product embodiment: Unclear / indirect. The affiliated Hitachi operating businesses shipped DVD camcorders and DVD recorders consistent with the claimed subject matter; Maxell itself is better characterized as the media supplier. I cannot confirm a Maxell-branded product embodying claims 1–12.
• Current status: Operating. Maxell, Ltd. is a publicly listed Japanese company (Tokyo Stock Exchange) headquartered at 1 Koizumi, Oyamazaki-cho, Otokuni-gun, Kyoto, Japan. It has not been dissolved and has not filed bankruptcy. It also runs a substantial patent-licensing/assertion program (see Verdict).

Assignment timeline

Confirmed events are taken from the Google Patents legal-events table (parties, conveyance type, recording dates). Reel/frame numbers are marked [confirmed for family] or [unverified for this patent].

• 2014-04-07 (recorded) — Reel/frame not located (family candidate: 030622/0001 [unverified])

  • Conveyance: Assignment (Google: "Assignment of Assignors Interest (see document for details)")
  • Assignor: Hitachi, Ltd.
  • Assignee: Hitachi Consumer Electronics Co., Ltd.
  • Correspondent: Not determinable from the data I retrieved.
  • Context: Internal corporate reorganization — Hitachi group portfolio consolidation ahead of the consumer-electronics carve-out.

• 2014-08-26 (executed) / recorded 2014-09-04 — Reel 033694/0745 [confirmed for family, unverified for this exact patent]

  • Conveyance: Assignment
  • Assignor: Hitachi Consumer Electronics Co., Ltd.
  • Assignee: Hitachi Maxell, Ltd., Japan
  • Correspondent: Not determinable; no recurring attorney name surfaced in this chain.
  • Context: Internal reorg — second leg of the Hitachi→Hitachi Maxell media/recording patent transfer.

• 2017-10-01 (executed) / recorded 2018-01-25 — Reel 045142/0208 [confirmed for family, unverified for this exact patent]

  • Conveyance: Assignment ("Assignment of Assignor's Interest")
  • Assignor: Hitachi Maxell, Ltd.
  • Assignee: Maxell, Ltd.
  • Correspondent: Not determinable.
  • Context: Corporate split / brand restructuring — Hitachi Maxell's operating businesses (and IP) moved to a newly named Maxell, Ltd. effective October 1, 2017.

• 2021-11-29 (recorded) — Reel/frame not located

  • Conveyance: Merger
  • Assignor: Maxell, Ltd.
  • Assignee: Maxell Holdings, Ltd.
  • Correspondent: Not determinable.
  • Context: Internal holding-company restructuring.

• 2021-12-03 (recorded) — Reel/frame not located

  • Conveyance: Change of Name
  • Assignor: Maxell Holdings, Ltd.
  • Assignee: Maxell, Ltd.
  • Correspondent: Not determinable.
  • Context: Change of name only — the holding company renamed itself back to "Maxell, Ltd.," so the net owner of the patent is unchanged in substance.

Cross-reference — related family reel: A Statement of Information filed in a sister patent's file history (US 10,176,848, same corporate chain) cites Reel 033685/0883 for the Hitachi Consumer Electronics leg, with a 2015-03-13 date. Because the 2014 Hitachi transfers were portfolio-wide bulk recordings, this patent is likely covered by the same or an adjacent frame. This is a discrepancy worth resolving on the Assignment Center — two candidate frames (033694/0745 vs. 033685/0883) for what appears to be the same corporate leg.

Key point: I did not find any assignment to a third-party licensing entity, LLC, or aggregator. Every recorded link stays inside the Hitachi → Hitachi Maxell → Maxell corporate family. There is no post-issuance NPE transfer.

Timeline diagram

timeline
    title Ownership of US 9451229B2
    1999 : JP priority application filed
    2013 : Continuation filed by Hitachi Maxell
    2014 : Hitachi Ltd assigns to Hitachi Consumer Electronics
         : Hitachi Consumer Electronics assigns to Hitachi Maxell
    2016 : Patent granted to Hitachi Maxell Ltd
    2017 : Operating assets and IP move to Maxell Ltd
    2018 : Assignment to Maxell Ltd recorded
    2019 : Anticipated expiration reached
    2021 : Merger into Maxell Holdings Ltd
         : Holding company renamed back to Maxell Ltd

NPE / troll-pattern signals

1. Shell-entity transfer — NOT PRESENT. No assignee is a single-purpose LLC. The only "Holdings"-suffixed entity, Maxell Holdings, Ltd., is a Japanese parent at the same Kyoto address as the operating company, and the 2021-12-03 Change of Name entry collapses it back into Maxell, Ltd. Reel 045142/0208 (recorded 2018-01-25) and the 2021 merger/rename pair show a genuine corporate reorganization, not a transfer to an anonymous assertion vehicle.

2. Known asserter in the chain — UNCLER / NOT PRESENT on named lists. Maxell, Ltd. does not match Acacia, Marathon, Intellectual Ventures, IPNav, Wi-LAN, Conversant/Mosaid, Vringo, Pendrell, Round Rock, or the Spangenberg entities. However, Maxell is a high-volume patent plaintiff in its own right (e.g., Maxell, Ltd. v. VIZIO, Inc., C.D. Cal. 2:21-cv-06758, filed 2021-08-20; Maxell v. Apple; Maxell v. Fandango, C.D. Cal. 2:17-cv-07534). I mark this unclear rather than "present" because it is an operating-company campaign, not an NPE campaign.

3. Repeat correspondent across the chain — UNCLER / INSUFFICIENT DATA. I could not retrieve correspondent-of-record fields for any of the five recorded assignments. The single name that surfaced anywhere in the chain's paperwork — "Mari Yoshida" — appears in a different patent's Statement of Information (US 10,176,848) and appears to be Hitachi-group IP staff, not a founding NPE attorney. No repeat-player NPE correspondent was found. This is a genuine data gap, not a negative finding.

4. Cascading transfers — PRESENT (weak). Two transfers landed in 2014 within ~5 months (2014-04-07 and 2014-09-04), and two more within 4 days in 2021 (2021-11-29 and 2021-12-03). But there are no chained third-party LLCs, no shared registered-agent addresses, and no common non-corporate principals — each pair is a documented intra-group restructuring. Treat as weak evidence at most.

5. Pre-litigation transfer — UNCLER / WEAK. The assignment to Maxell, Ltd. was executed 2017-10-01 and recorded 2018-01-25; Maxell's first wave of US suits against consumer-electronics defendants began around 2017–2018 (C.D. Cal. 2:17-cv-07528; D. Del. 1:18-cv-00216; N.D. Cal. 3:18-cv-01788). The timing is within ~6 months of the assignment, but the 2017-10-01 date matches the company-wide rebranding from Hitachi Maxell to Maxell, Ltd., not a targeted set-up. Does not, on this record, indicate the chain was arranged to enable assertion.

6. Bankruptcy fire-sale — NOT PRESENT. Neither Hitachi, Ltd., Hitachi Consumer Electronics, Hitachi Maxell, nor Maxell has been through Chapter 7/11 or an equivalent Japanese insolvency proceeding on this record.

7. Privateering — NOT PRESENT on this record. Hitachi divested consumer electronics/IP to its Maxell affiliate, which then asserted broadly; but there is no SEC filing, Patent Progress, or EFF coverage I found showing Hitachi directing Maxell's assertions. Maxell asserts as principal, not as Hitachi's proxy.

8. Defensive aggregator — NOT PRESENT. The chain does not terminate at RPX, AST, LOT Network, Unified Patents, or OIN. Note the inverse: Unified Patents challenged this family via IPR2019-00067 (settled) — i.e., Maxell was the target of a defensive-aggregator IPR, not the recipient of a defensive acquisition.

Verdict

Operating-company assertion.

The chain runs Hitachi, Ltd. → Hitachi Consumer Electronics → Hitachi Maxell, Ltd. → Maxell, Ltd. (reel 033694/0745 effective 2014-08-26; family reel 045142/0208 effective 2017-10-01; 2021 merger and rename at 2021-11-29 / 2021-12-03). Every link is an intra-group reorganization with a documented corporate-secretarial mechanism (Assignment → Assignment → Merger → Change of Name) — no LLC, no registered-agent address, no recurring NPE correspondent, no bankruptcy, no aggregator. Maxell, Ltd. is a listed Japanese manufacturer that nonetheless runs an aggressive licensing-and-litigation program (e.g., Maxell v. VIZIO, C.D. Cal. 2:21-cv-06758), which is why this is coded operating-company assertion rather than defensive. Caveat: I could not confirm that US 9451229B2 specifically (as opposed to its family-mates) has been asserted; the case/IPR badges on the Google Patents page are family-level.

Verification links:

• USPTO Assignment Center (search by patent number): https://assignmentcenter.uspto.gov/
• Google Patents legal events: https://patents.google.com/patent/[US9451229](/patent/US9451229)/en
• Unified Patents PTAB case IPR2019-00067: https://portal.unifiedpatents.com/ptab/case/IPR2019-00067
• Delaware case 1:18-cv-00216: https://portal.unifiedpatents.com/litigation/Delaware%20District%20Court/case/1%3A18-cv-00216

Recommended follow-up to close the two open gaps: (a) pull the Assignment Center abstract for 13/859,334 to confirm whether the 2014 legs sit on frame 033694/0745 or 033685/0883; (b) pull the correspondent-of-record field for reel 033694/0745 to test signal #3 properly — I could not retrieve it, so the "no NPE correspondent" conclusion rests on absence of evidence.

I'll search for the USPTO record and the front-page citations for US 9,451,229 B2.

Let me try to retrieve the front-page citations directly from the granted PDF and Google Patents citation table.

Let me pull the Justia/patent-history pages and the IPR2019-00067 record, which typically reproduce the patent's cited references.

Scope note, and a deliberate non-fabrication flag

I was asked to pull the USPTO record for US 9,451,229 B2 (literally; not to be auto‑corrected) and to enumerate each patent citation on it. Here is what I can and cannot ground:

• ✅ Confirmed: the bibliographic record, abstract, specification/background, and claim 1 (plus the openings of claims 2–3) from the authoritative full text supplied for US 9,451,229 B2 (Google Patents mirror of the USPTO grant, fetched 2026‑09‑28).
• ❌ Not retrieved: the actual front‑page "(56) References Cited" list for the '229 patent. It is absent from the supplied authoritative text, and my searches (Google Patents, patentimages PDF paths, Justia/local family pages, aggregator pages) did not surface the Box‑(56) U.S. patent documents, foreign patent documents, or NPL list.
• Because of that, I will not manufacture a citation list. Inventing patent numbers and issue dates for a §102 mapping would be the single most damaging error I could make here. What follows distinguishes (a) art the patent itself identifies, (b) same‑family documents frequently mistaken for prior art, and (c) forward citations, with an explicit note on where the analysis is blocked.

I also did not return results for lookalike numbers (e.g., US 11,344,413, US 11,135,096 appeared incidentally in search results and are unrelated documents; they are excluded).

1. Governing §102 framework — this step must come before any mapping

Pre‑AIA §102 applies. The '229 patent is a continuation whose priority chain runs to JP 11‑189868, filed 1999‑07‑05, via US 09/446,338 (filed 1999‑12‑20) → 10/191,551 → 12/124,229 → 13/192,935 → 13/859,334. No claim has a post‑2013‑03‑16 priority date, so the AIA first‑inventor‑to‑file provisions do not govern; pre‑AIA §102(a)/(b)/(e) do.

Consequently, critical dates depend entirely on whether each claim is entitled to the 1999 priority:

Practical consequence: essentially all of the 2001+‑dated documents that surfaced in my searches (including the 2001 publication of the family's own PCT case, WO 2001003431 A1) are outside §102 against claims entitled to the 1999 chain. They only become available if priority is broken — which is exactly why the priority question, not the citation list, is the leverage point here (see §4).

Absent a demonstrated priority break, a §102 anticipation case against the '229 must be built from pre‑1999 patents and printed publications only.

2. Prior art identified in the patent itself (authoritative — from the supplied text)

These are the references the applicant/examiner put on the record within the specification, so they are citable with confidence.

2.1 JP 10‑108133 A — Japanese Patent Unexamined Publication No. 10‑108133

• Full citation as stated in the patent: "Japanese Patent Unexamined Publication No. 10‑108133" (cited in the BACKGROUND ART discussion).
• Publication/filing date: The patent does not state a date. "H10" indicates an application numbered in Heisei 10 (= 1998); publication of an unexamined JP application occurs ~18 months post‑filing, placing publication in 1998 or 1999. I have not verified the exact publication date, which matters for whether it clears the ~1998‑12‑20 §102(b) bar. This must be confirmed before it can be relied on as §102(b) art.
• Description (per the '229 specification): discloses that "pictures [are] encoded and recorded with a plurality of different methods at a time and both moving and still pictures are encoded and recorded simultaneously," and that to let both MPEG‑based recordable players and ordinary players reproduce data while also recording high‑resolution stills, "it is only needed to record both MPEG I pictures and JPEG file pictures."
• §102 mapping — candid assessment:
  • The dual‑encoding concept of the '229 abstract and of claim 1's elements (1) "moving picture after encoding by an MPEG method" and (3) "the still picture after encoding by the JPEG method" is what JP 10‑108133 is cited as teaching.
  • However, the '229 specification expressly distinguishes it: "The conventional techniques, however, do not consider encoding of still pictures read from a fine photographing element with the use of such an encoding method as MPEG for moving pictures… no care is paid for the difference in reading pictures from a photographing element between reading fine still pictures and reading moving pictures," and separately notes they "do not consider any correspondence to recordings of both moving and still pictures."
  • Claim 1 as granted additionally requires (i) a first thumbnail for the MPEG moving picture, (ii) a second thumbnail for the JPEG still picture, (iii) the two thumbnails stored in a same directory in which the moving picture and still picture are not stored, (iv) size adjustment of the first thumbnail to be close to the second thumbnail's size, (v) a display unit listing the two thumbnails read from that directory, and (vi) a reproducing unit keyed to the selected thumbnail. On the face of the specification's own characterization, JP 10‑108133 does not disclose elements (i)–(vi).
  • Verdict: JP 10‑108133 is not a viable §102 anticipation reference against claim 1 as granted. It is best characterized as a §103 base reference for the dual/parallel‑encoding sub‑combination, and it is the reference the '229 patent itself uses to frame the problem. It could potentially anticipate only a hypothetical broader claim reciting no more than "record a moving picture MPEG‑encoded and a still picture JPEG‑encoded from one still photograph" — which is not what claim 1 recites. Because claims 4–12 remain truncated/unavailable (see §5), I cannot rule it out against any of those.

2.2 "The Latest Guidebook to MPEG" (ASCII Co., Ltd., Aug. 1, 1994)

• Full citation: The Latest Guidebook to MPEG, ASCII Corporation, Aug. 1, 1994.
• Description: the standard background text on the MPEG standard and the MPEG‑1 "main profile main level" 720×480 constraint, cited in the '229 BACKGROUND ART for the proposition that real‑time encoding limits moving‑picture resolution while stills may be read slowly at higher pixel counts.
• §102 mapping: This is §102(b)‑eligible NPL (published 1994‑08‑01, well before the bar date) but it is cited as general knowledge / admitted prior art, not as disclosing the claimed combination. It cannot anticipate any of claims 1–12, which require the thumbnail‑directory and list‑display architecture. Its role is §103 (motivation/level of ordinary skill) and potentially as a §102(b) reference against a purely MPEG‑encoding claim (none present as granted).

3. Family documents — commonly mislabeled as "citations"; not prior art on their face

These appear in the '229 Cross Reference and are in the same family/specification. They are not §102 art against claims that keep the 1999 priority, but they are the documents most often confused with the (56) list:

Why this matters procedurally: because the '229 is a continuation, the examiner in 13/859,334 likely relied principally on art already of record from the earlier applications in the chain. The substantive prior‑art list for this family would therefore most usefully be read off the front page of US 6,424,795 B1 (the original 1999 filing) as well as the '229 itself — that is the single highest‑value document to pull from Patent Center, and it is the one I could not retrieve.

4. The real §102 attack surface: priority, not the citation list

Given a 1999 priority date, a §102 case must break priority for the specific claim being challenged. This is a recognized theory for this family:

• The granted claim 1 limitations with the least textual support in the 1999 specification are the "same directory in which the moving picture and still picture are not stored" requirement and the "size of the first thumbnail… adjusted so as to be close to a size of the second thumbnail" requirement. The 1999 spec describes a THUMBNAIL directory and 160×120‑pixel thumbnails, and it does say both are "JPEG data file[s]," but the relative size‑matching formulation is arguably a later‑drafted refinement.
• If those limitations are shown to lack §112 written‑description support in the 1999 disclosure, the claim loses the 1999 priority and the effective date shifts forward — at which point the 2001–2007 documents that surfaced in my search (e.g., WO 2003056813 A1 (Hewlett‑Packard), 2003, directed to a "concurrent dual pipeline for acquisition, processing and transmission of digital video and high‑resolution digital still images"; JP 2003‑092724 A; JP 2003‑153297 A; NL 1021433 C2; WO 2004108422 A1; JP 2007‑175430 A; and the family's own WO 2001003431 A1) become §102(b)/§102(a)‑eligible. But note: those seven documents appeared in search results as forward citations ("Cited By") of the WO/counterpart family record — i.e., documents citing this family — not as documents cited by the '229. I am reporting that distinction rather than blurring it. They are also all post‑1999, so they are inadmissible under §102 as things stand.
• This priority argument is, unsurprisingly, the one the challengers actually ran: IPR2019‑00067, filed by Unified Patents against U.S. Pat. No. 9,451,229 and listed on the patent record as (Settlement) — https://portal.unifiedpatents.com/[ptab](/ptab)/case/IPR2019-00067. A search snippet from the related US 10,349,030 page references "No. 9,451,229, Inter Partes Review No. IPR2019‑00067 dated Oct. 17, 2018," together with ASUSTeK invalidity contentions and Maxell, Ltd. v. ASUSTeK Computer Inc., No. 3:18‑cv‑01788 (N.D. Cal.) (https://patents.justia.com/patent/[10349030](/patent/10349030)). The IPR petition is the single document that would contain a professionally constructed §102/§103 mapping against the exact granted claims — I could not retrieve its exhibit list, and I flag that as the top outstanding item.

Related litigation of record (per the patent page): D. Del. 1:18‑cv‑00216 (declaratory‑judgment action including a "Fifth Claim for Relief (Declaratory Judgment of Non‑Infringement of the '229 Patent)"); N.D. Cal. 3:18‑cv‑01788; C.D. Cal. 2:17‑cv‑07528.

5. Blocked item I will not guess at

The supplied authoritative text truncates at claim 3 ("regardless of whether or not a resolution of the still picture is higher than a resolution of t—"). Therefore:

• Claims 4–12 cannot be analyzed for anticipation, and whether the '229 contains additional independent claims is unverified. Every §102 mapping in a real opinion must be done claim‑by‑claim; with nine claims unreadable, any "reference X anticipates claim Y" statement covering them would be fabrication. The 12‑claim count and the 3 sheet count are all the truncated record supports.
• The independent claim I can read (claim 1) is a thumbnail‑search‑and‑display claim, not merely a dual‑encoding claim. That distinction is decisive: it means the strongest anticipatory art must show thumbnails for both media types in one non‑media directory with matched sizes and a selectable list — a combination none of the art identified in the specification discloses.

6. Summary table — potential §102 reach, as far as the record allows

7. What must be pulled to convert this into a defensible prior‑art study

1. USPTO Patent Center → application 13/859,334 → "References Cited" / IFW: the actual (56) list and all PTO‑892/1449 forms. (Not obtainable with my current tools; this is the gap.)
2. Front page of US 6,424,795 B1 — the original 1999 examination's cited art, which is the substantive prior‑art family for this disclosure.
3. IPR2019‑00067 petition, expert declaration, and exhibit list (PTAB/Unified Patents portal) — includes the priority‑date and §112 arguments.
4. The granted PDF (US9451229.pdf) for the complete claims 4–12 and the Box‑(56) list, to close the truncation.
5. Exact publication date of JP 10‑108133 A.

Bottom line: On the record I can actually verify, the most relevant prior art for US 9,451,229 B2 is JP Patent Unexamined Publication No. 10‑108133, discussed in the patent's own BACKGROUND ART — but it does not anticipate granted claim 1, whose novelty resides in the dual‑thumbnail, same‑directory, size‑matched, selectable‑list architecture. I could not retrieve the patent's front‑page patent citations and have deliberately not reconstructed them from memory. A definitive §102 chart requires the (56) list from Patent Center and the IPR2019‑00067 exhibits.

I'll gather the prior-art record for this patent before analyzing.

Let me pull the actual prior-art citations listed for this patent and its family.

Obviousness Analysis — US 9,451,229 B2 (35 U.S.C. § 103)

Note on dates. The task header says "Current Date: April 26, 2026," while the authoritative fetch of the patent page is timestamped 2026‑09‑28. Nothing in this analysis turns on the difference; I flag it only because the operating rules ask me to surface contradictions.

Builds on prior sections. The bibliographic record, continuation chain, claim‑1 summary, and the litigation/PTAB findings are already established above and are not repeated. This section adds the § 103 layer.

1. What the "Prior Art" section of this page actually contains — and what it does not

Being precise about the record matters here, because the strength of any § 103 ground depends on which references are properly of record.

What the page's Prior Art panel gives (verified):

• Prior art keywords: picture, thumbnail, still, encoded, pictures.
• Prior art date: 1999‑07‑05 (the JP 11‑189868 priority date).
• An express admission in the specification. The Background Art states that "it is only needed to record both MPEG I pictures and JPEG file pictures. Such techniques are disclosed in, for example, the Japanese Patent Unexamined Publication No. 10‑108133. According to the disclosed techniques, pictures is encoded and recorded with a plurality of different methods at a time and both moving and still pictures are encoded and recorded simultaneously." This is the single most useful § 103 datum on the page: the patentee conceded that dual‑encoding/dual‑recording of a still picture in two formats was known. The '229 then characterizes the remaining gap as (i) encoding fine still pictures with the moving‑picture encoder and (ii) "correspondence to recordings of both moving and still pictures … for searching pictures when in reproducing."

What the page's panel does not give: the granted front page's "References Cited" list for the '229 itself was not in the fetched text. I therefore reconstructed the family's cited art from sibling front pages surfaced in search. The US 6,856,760 B2 front page (same 1999‑07‑05 family) lists: US 4,691,253 (Silver); 5,138,459 (Roberts); 5,444,482 (Misawa); 5,583,653 (Timmermans); 5,987,179 (Riek); 6,195,503 (Ikedo); 6,226,449 (Inoue); 6,300,976 (Fukuoka); 6,356,709 (Abe) — and foreign art JP 7‑212712 (8/1995), JP 7‑327196 (12/1995), JP 10‑108121 (4/1998), JP 10‑108133 (4/1998), JP 10‑200859 (7/1998), JP 10‑233995 (9/1998), WO 92/09169 (5/1992).
Source: https://www.docketalarm.com/cases/Texas_Eastern_District_Court/5--23-cv-00152/Maxell_Ltd._v._LG_Electronics_Inc._et_al/docs/1/2.pdf

Caveat I will not paper over: I have not verified the disclosure content of any of JP 10‑108121, JP 10‑200859, JP 10‑233995, JP 7‑212712, JP 7‑327196, WO 92/09169, or the listed U.S. references in this session. Their presence on the family's front page makes them legitimate starting points, but I cannot map them element‑by‑element, and I will not pretend to. The only reference whose subject matter I can state with confidence from this record is JP 10‑108133, because the '229 itself describes it.

A second verified thumbnail anchor. Search surfaced what is plainly the DCF/Exif still‑image file‑format standard (Japanese text) defining 主画像 ("main image") versus サムネイル ("thumbnail"), Exif APP1, and the thumbnail in the 1st IFD, citing ISO/IEC 10918‑1 (JPEG Baseline DCT) — https://ptacts.uspto.gov/ptacts/public-informations/petitions/[1556556](/patent/1556556)/download-documents?artifactId=34nvCiq_o9Hsyb5tdsc061TK76N9k2yfs25_luQ51qvvFkVMsYlWbnY . I could not confirm the edition/publication date of that standard in this session, so I use it only for the proposition that recording a reduced‑size thumbnail alongside a still image was a standardized convention in the consumer digital‑camera field, not as a date‑verified § 102(b) reference.

Post‑1999 documents (relevant only if the effective filing date moves): the "Similar Documents" list for WO 2001003431 A1 (the PCT of this family) includes WO 03/056813 A1 (Hewlett‑Packard: "double pipeline concurrent for acquisition, processing and transmission of digital video and high‑resolution digital still images"), WO 2004/108422 A1, NL 1021433 C2 (Samsung: optical‑disk reproducing apparatus for reproducing still images), and CN 103491876 A — https://patents.google.com/patent/WO2001003431A1/fr . Also surfaced: EP 1 467 562 A1 (recording apparatus that records MPEG moving pictures and JPEG stills separately on a DVD and, at predetermined timing, reads the JPEG still, converts it to MPEG I‑pictures and records them) — http://data.epo.org/pise-server/rest/collections/lgpi/EP1467562A1.pdf ; and EP 0 982 950 A2 / US 8,194,143 (Matsushita‑style digital camera sharing a DCT stage between a JPEG still encoder and an MPEG encoder, recording audio‑attached stills as MPEG I‑pictures) — http://data.epo.org/publication-server/rest/v1.2/patents/EP0982950NWA2/document.pdf . All of these post‑date 1999‑07‑05 on their faces.

2. The threshold § 103 issue: pre‑AIA or AIA, and what date the claims get

This governs everything downstream, and it is the most consequential open question.

• The '229 issued from App. 13/859,334, filed 2013‑04‑09 — after the 2013‑03‑16 AIA cutover. If claim 1 is entitled to the 1999‑07‑05 priority date, pre‑AIA §§ 102/103 apply and only pre‑1999 art counts.
• The § 112(a) support for the claim‑1 limitation that is arguably new in this continuation is: the JPEG movie thumbnail is generated "so that a size of the first thumbnail picture corresponding to the moving picture is adjusted so as to be close to a size of the second thumbnail picture to be generated based on the still picture encoded by the JPEG method," and both are stored "in a same directory in which the moving picture and the still picture are not stored."
• The 1999 disclosure does describe 160×120 thumbnails for both movie and still pictures (Twelfth paragraph of the FIG. 3 discussion), which supports "close to." It also describes a THUMBNAIL directory holding t0000001.jpg, t0000002.jpg, etc. while movies/stills live in DVD_RTAV and JPEG (FIG. 4 description). So the priority claim is defensible. But the active‑adjustment connotation of "adjusted so as to be close to" is a stretch against a disclosure that simply uses the same nominal thumbnail size twice — a challenger should test this.
• If either limitation is held to lack written‑description support in the 1999 application, the effective filing date shifts to no earlier than 2011‑07‑28 (App. 13/192,935) or 2013‑04‑09, AIA § 102(a)(1)/(a)(2) applies, and the post‑1999 documents in § 1 above (WO 03/056813; EP 1 467 562; US 8,194,143 / EP 0 982 950) become available. That would materially strengthen the obviousness case.

The remainder of this analysis assumes the pre‑AIA, 1999 effective date — the patentee‑favorable assumption — and shows the claims are still vulnerable.

3. Level of ordinary skill

A bachelor's degree in EE or CS plus 2–3 years in consumer digital imaging/video, or equivalent, with working familiarity with MPEG‑1/MPEG‑2 I‑pictures, JPEG baseline coding, and consumer file‑system/format conventions (DVD‑VR, Exif/DCF). That artisan would know: how to scale a decoded frame to thumbnail dimensions; that MPEG encoders can be exercised to emit a single I‑picture; and that an index of small representative images is the standard way to let a user browse recorded content.

4. Claim 1 mapped to the art

The honest read: the dual‑encoding/dual‑recording core of claim 1 is admitted prior art on the face of the patent. The only features not conceded in the Background are the thumbnail features — and thumbnails are precisely the thing the Background says the prior techniques failed to consider ("no care is paid for … correspondence to recordings of both moving and still pictures … for searching pictures when in reproducing"). That is a narrowing admission, not a saving one: it tells the challenger exactly where to aim.

5. Grounds of rejection

Ground A (primary) — JP 10‑108133 + thumbnail‑index art + routine file‑system organization

JP 10‑108133 teaches recording a still picture encoded and recorded by multiple different methods at once, including MPEG I‑picture and JPEG representations of the same still.

A second reference (or the knowledge of one of ordinary skill evidenced by the DCF/Exif thumbnail convention) teaches generating a reduced‑size representative image for a recorded image and recording it as a separate JPEG file at a standard thumbnail size, so that a browsing application can enumerate small files without decoding full‑resolution data.

Motivation. The '229's own statement of purpose supplies it: to make it "easier for the user to control the apparatus" when "searching pictures when in reproducing." Once a device holds both movie files and still files, presenting a single visual index of both is the ordinary, expected design. Combining a known thumbnail generator with a known dual‑encoding recorder is "the application of a known technique to a known device ready for improvement" — a textbook KSR rationale and MPEP 2143(A)/(C)/(F) territory.

Same directory. Storing the two thumbnail sets together in a directory that holds neither the movies nor the full‑size stills is a predictable arrangement with a mundane functional payoff: the browser enumerates one folder of uniformly small files rather than opening large containers. The field already segregated content by type (DVD_RTAV for the MPEG stills/movies, JPEG for stills). Adding a THUMBNAIL folder is a change in form, not in function — KSR ("a change in form … if the change is within the skill of the art"), and a "design choice" rationale. Secondary evidence of obviousness: the claim's own "same directory" limit is satisfied by the specific THUMBNAIL directory the patentee chose, and the specification offers no unexpected technical result from that segregation.

Size matching. If movie and still thumbnails appear in one list, the artisan must render them at a consistent size or the list looks broken; "close to" the still‑thumbnail size is a design requirement, not a discovery. Scaling a decoded frame to a target pixel size is routine.

Ground B — the family's own cited Japanese art as the secondary reference set

JP 10‑108121, JP 10‑200859, JP 10‑233995, JP 7‑212712, JP 7‑327196, and WO 92/09169 were of record in the same family and are the natural candidates for the "thumbnail/index" and "record/search correspondence" elements, to be paired with JP 10‑108133 or with US 5,987,179 (Riek) and US 6,195,503 (Ikedo). I have not verified their disclosures, so this ground is a lead, not a conclusion. A challenger should pull each and chart it.

Ground C — available only if the effective filing date moves past 1999

WO 03/056813 A1 (concurrent acquisition and processing of digital video and high‑resolution still images through dual pipelines) in view of EP 1 467 562 A1 (record MPEG moving pictures and JPEG stills separately, then at predetermined timing read the JPEG still, convert it to MPEG I‑pictures and record those) in further view of a thumbnail‑gallery reference, optionally with US 8,194,143 / EP 0 982 950 (camera sharing a DCT stage between JPEG and MPEG encoders; audio‑attached stills stored as MPEG I‑pictures; systems/streams with a still picture I‑picture packet and an audio packet). This combination hits every element of claim 1 without the priority‑date fight — but it lives or dies on the effective‑date ruling in § 2.

Ground D — single‑reference (anticipation‑flavored) attack

A DVD recorder or camera that already writes a movie thumbnail gallery and still thumbnails into one index would dispose of claim 1 as a whole. I did not identify a verified pre‑1999 reference of that exact shape in this session. Flagging it as the highest‑value missing piece rather than asserting it exists.

6. Dependent claims

• Claim 2 (first thumbnail recorded when photographing the moving picture; second thumbnail when photographing the still picture) is a timing/sequence limitation that follows immediately from the recording rule itself and from the order in which the two capture modes are used. Obvious over any of Grounds A–C; at most a routine implementation detail.
• Claim 3 — I cannot analyze it. It is truncated in the only claim text available to me ("wherein, regardless of whether or not a resolution of the still picture is higher than a resolution of t…"). This truncation was already flagged in the earlier claim summary and it has not been cured. Claims 4–12 likewise cannot be assessed. Anyone relying on this § 103 opinion should obtain the full claim set from the granted PDF (https://patentimages.storage.googleapis.com/f0/93/a3/3d99a4439ab3e0/US9451229.pdf) or USPTO Patent Center for App. 13/859,334. I will not guess at them.

7. Where this analysis is weak — the patentee's best answers

A rigorous opinion has to state the counter‑case.

1. No explicit teaching, suggestion, or motivation to co‑locate the thumbnails. The strongest rebuttal is that the art the patentee identifies (dual encoding for player compatibility) and the art a challenger would add (thumbnails for browsing) are solutions to different problems, and nothing in them suggests putting a movie thumbnail and a still thumbnail in the same directory. KSR permits a reasoned motivation without an express TSM, but the Federal Circuit still requires an articulated reason with a rational underpinning — a bare assertion that both are "thumbnails" invites a hindsight charge.
2. The art may teach away. In DVD‑VR — the very format the specification's VR_MANGR.IFO/VR_STILL.VRO belongs to — still pictures and their entry/thumbnail information are managed through the recording‑management structures, i.e., inside the container, not in a standalone folder of loose thumbnail files. Exif likewise embeds the thumbnail in the image file's IFD. A patentee can argue the field's own conventions pointed to embedding, not to a separate shared thumbnail directory. This is the argument I would expect to carry the most weight.
3. "Adjusted so as to be close to" is doing real work in the claim, and it is factually contestable. A prior‑art thumbnail generator that simply emits a fixed 160×120 both for movies and for stills may or may not "adjust" one relative to the other. And the term invites a § 112(b) indefiniteness challenge ("close to" — how close?). Indefiniteness is not § 103, but an indefiniteness holding can neutralize the claim and also fuel the effective‑date argument in § 2.
4. Objective indicia. Maxell asserted the family broadly (the earlier section records the Huawei/LG‑lineage and Olympus/Samsung/Anker activity; the older siblings, not the '229, carried most of it), and the family survived to issue in 2016, twelve years after the effective filing date. But nexus is the problem: the asserted commercial success, if any, attaches to the dual‑encoding capability (admitted prior art) rather than to the thumbnail‑in‑its‑own‑directory feature. And note the patent is Expired – Fee Related, anticipated expiration 2019‑09‑20, which further weakens any "long‑felt need" narrative about this specific claim.
5. Procedural posture. IPR2019‑00067 (Unified Patents) terminated by Settlement, so the Board never reached the merits on any § 103 ground. There is no estoppel and no adjudicated validity for the '229.

8. Bottom line

• On the record available, claim 1 is vulnerable but not a slam dunk. Because the specification admits the dual‑encoding/dual‑recording concept as prior art (JP 10‑108133), the entire § 103 fight collapses to the thumbnail features. Those features are individually mundane — reduced‑size representative images were a standardized convention in still imaging, and uniform thumbnail sizing plus a dedicated index directory are design choices with ordinary functional payoffs.
• The best attack is Ground A: JP 10‑108133 in view of a thumbnail/index reference (DCF/Exif‑type convention or the family's own JP 10‑108121 / JP 10‑200859 / JP 10‑233995), with the directory arrangement and the size relation supported by a "design choice / predictable variation" rationale under KSR and MPEP 2143.
• The best alternative attack is Ground C, which requires winning the effective‑filing‑date argument under § 2 and then using post‑1999 art (WO 03/056813 A1; EP 1 467 562 A1; US 8,194,143 / EP 0 982 950) that hits every element cleanly.
• The most likely failure mode for a challenger is the motivation‑to‑combine prong on the "sameness of the directory," buttressed by a teaching‑away argument from DVD‑VR/Exif embedded‑thumbnail conventions, plus the factual dispute over "adjusted so as to be close to."

Verification gaps I am explicitly not closing

1. Claims 3–12 are unanalyzed — the claim text I have is truncated at claim 3.
2. The cited‑art list on the '229's own front page was not retrieved; the JP/US reference lists above come from the sibling US 6,856,760 front page.
3. Disclosure contents of the family‑cited JP/US references were not verified.
4. The Exif/DCF document's publication date was not verified against the 1999‑07‑05 prior‑art date.
5. No § 102 anticipation reference of the exact "one index directory for both movie and still thumbnails" shape was identified.

I do not have high confidence on items 1–5, and I have said so rather than filling the gaps with assumptions.