US 6122521

I'll run targeted searches for this specific patent number, including the CAFC docket angle.

Let me check the CAFC docket and any 2026 activity specifically.

Let me make one more check for any recent (2025–2026) docket activity before summarizing.

US 6,122,521 — Summary

Caveat on identifiers: I've interpreted the number literally as given, 6,122,521 (US 6,122,521 B1 / application US 08/700,224). All results below are for that patent only.

Bibliographic data

Sources: Google Patents US6122521; USPTO.report.

Abstract (verbatim)

"A telecommunications system for locating persons and things which includes a remote unit and a base unit wherein the remote unit includes a receiver for receiving navigational signals and a video means for generating signals representing a visual image of the area in the vicinity of the remote unit. The remote unit then transmits to a base station signals representing the position of the remote unit and a visual image of the area in the vicinity of the remote unit for display at a base station at an external location."

Plain-language overview of the independent claims

Claim 1 — the full two-party system (remote unit + base unit). The remote unit is made of:

• (a) a satellite-navigation receiver (GPS) that produces position signals;
• (b) video means in the form of a miniature infra-red camera that produces signals representing a visual image of the area around the unit;
• (c) a telecommunications receiver that receives signals from an external location and, on command, activates either the navigation receiver, the video means, or both — i.e., reverse/remote activation from the base station;
• (d) a microprocessor that controls and receives outputs from both the navigation receiver and the camera;
• (e) a telecommunications transmitter that sends the position information and the video image to the external location.

The base unit comprises: (f) a receiver for the position and video signals; (g) a transmitter that sends the activation signal to the remote unit's telecommunications receiver; and (h) a display showing both the position and the visual image.

Claim 7 — the remote unit alone. Same five elements (a)–(e) as claim 1's remote unit, claimed standalone (no base unit required).

Dependent claims, briefly: 2 — navigation receiver is a GPS receiver; 3 — camera produces analog signals converted to digital for transmission; 4 — the transmitter is a cellular phone with a modem; 5 — the transmitter is a wireless radio transmitter; 6 — a push button on the remote unit activates the microprocessor (and thus the receiver and camera); 8 — the remote unit is miniaturized to about wristwatch size; 9 — the claim-7 receiver is a GPS receiver.

Drafting notes (literal reading of the text): Claim 9 is worded "A system as defined in claim 7…" despite being grouped with the claim-7 unit claims, and the Summary section describes element (c) as activating "the receiver for receiving navigational signals and the telecommunications receiver," whereas claims 1 and 7 say the video means. These appear to be internal inconsistencies in the patent as issued.

Litigation / CAFC docket findings

• CAFC No. 2009-1371 — Triune Star, Inc. v. Walt Disney Co. (filed 2009-05-18; Plaintiff-Appellant: Triune Star, Inc.; Defendants-Appellees include LG Electronics MobileComm U.S.A., LG Electronics, Inc., Pantech & Curitel Communications, Pantech Co. Ltd., Pantech Wireless). Docket: https://dockets.justia.com/docket/circuit-courts/cafc/09-1371 (opinion entries dated 2009-06-26 and 2009-08-24).
• The appeal stemmed from Triune Star, Inc. v. The Walt Disney Company, No. 1:07-cv-01256 (C.D. Ill.), complaint filed 2007-09-28. The district court (Mihm, J.) construed "video means in the form of a miniature infra-red camera" and granted summary judgment of non-infringement (Markman order dated 2008-11-25), holding that the accused LG and Pantech camera modules (visible-light cameras with IR cut filters, no IR pass filter or IR source) could not literally infringe, and that prosecution history estoppel barred the doctrine of equivalents because the "miniature infrared camera" limitation was added during prosecution to overcome prior art. The court also addressed the Disney personal-jurisdiction dismissal. Sources: ipmall Markman PDF; Justia docs; Studicata summary.
• No 2026 CAFC docket activity found. My searches surfaced no pending or decided Federal Circuit matter involving US 6,122,521 in 2025–2026 — which is expected given the patent expired 2016-08-20. Note: your instruction gives the current date as April 26, 2026, while the system context shows September 29, 2026; either way, I found no 2026 docket entry.

Uncertainty / confidence notes

• High confidence (from the patent document itself and corroborating databases) on: title, inventors, application number, filing/priority date, issue date, abstract, claim set, and assignment chain.
• Moderate confidence on the CAFC appeal's ultimate disposition. I confirmed the case number (09-1371), the parties, and the 2009 opinion dates, but my searches did not return the text of the Federal Circuit's decision, so I cannot state authoritatively whether it affirmed, dismissed, or ruled otherwise. My final verification search returned no results before I was cut off.
• I did not obtain a live USPTO PatentCenter/Public PAIR or PACER/CAFC docket screen directly; the above rests on Google Patents, USPTO.report, Justia/RPX Insight docket mirrors, and the district court's Markman order. If you need certified-status confirmation (e.g., current owner of record, any late maintenance-fee events), that should be pulled directly from USPTO PatentCenter and the CAFC/PACER docket rather than inferred from these secondary sources.

I'll research litigation involving US 6,122,521. Let me start with the specific leads from the patent record.

I found strong leads. Let me dig into the specific case details and the Federal Circuit appeal.

Let me get the Federal Circuit outcome and check for any other suits.

Litigation Involving U.S. Patent No. 6,122,521

Bottom line: I found one district court action asserting the '521 patent, plus one Federal Circuit appeal from it. No other litigations were identified. Given that the patent expired on August 20, 2016, no further assertions would be expected.

Case 1 — District Court

Outcome / status:

• The Walt Disney Company was dismissed for lack of personal jurisdiction — a separate order in this case (also reported as Triune Star, Inc. v. Walt Disney Co., 2008) held TWDC, a Delaware corporation headquartered in California, had no Illinois contacts, and the inducement/contributory claims were pleaded without supporting facts. TWDC was a holding company; WDIG Mobile, LLC was the operating party.
• November 24–25, 2008 (Doc. 69): Judge Mihm granted the remaining defendants' motions for summary judgment of non-infringement and motions for Rule 11 sanctions. The court construed claim 7/9's "video means in the form of a miniature infra-red camera" and held the accused phones could not infringe as a matter of law: the LG models DM-L200/DM-L210 (CMMG-V068 camera module) and Pantech models DM-P100/DM-P205 (Lite-On LTC TX215C and Patron PN320 modules) used visible-light cameras with IR cut filters and no IR pass filter — i.e., no infrared camera. The court also barred the doctrine of equivalents on prosecution history estoppel (the "miniature infrared camera" limitation was added by amendment to overcome prior art).
• April 22, 2009 (Doc. 86): Order granting in part / denying in part the defendants' fee motions. Rule 11 sanctions were awarded against Triune Star and its counsel (Rockey Depke & Lyons; attorney Keith V. Rockey) as follows: $58,359.00 in fees/expenses plus $555.00 costs to the LG defendants; $56,567.60 to the Pantech defendants; and $125,979.58 to WDIG Mobile. (Total defense fees incurred were reported at over $600,000; the court applied 55–60% reductions.)

Case 2 — Federal Circuit Appeal

Note on confidence: The Google Patents record cites this appeal via the Unified Patents litigation dataset (https://portal.unifiedpatents.com/litigation/Court%20of%20Appeals%20for%20the%20Federal%20Circuit/case/09-1371), and the docket confirms the parties, court, case number, and filing date. I was not able to retrieve the text of the Federal Circuit's disposition to confirm whether it was a Rule 36 summary affirmance or a signed opinion. I can confirm the appeal followed the district court's summary judgment/sanctions order and that both the judgment and the fee award were appealed; I should not state the appellate holding more precisely than that without the order text.

What I did NOT find

• No other district court suits against any other parties asserting the '521 patent.
• No IPR, PGR, or CBM proceedings involving the '521 patent (the patent expired August 20, 2016, so post-grant review would be unavailable now).
• No ITC Section 337 investigations identified.

Sources

• Google Patents record and litigation link for US6122521A: https://patents.google.com/patent/US6122521/en
• Docket, Triune Star, Inc. v. The Walt Disney Company et al., No. 1:07-cv-01256 (C.D. Ill.): https://dockets.justia.com/docket/illinois/ilcdce/1:2007cv01256/42554
• Docket, Triune Star v. Walt Disney Co., No. 09-1371 (Fed. Cir.): https://dockets.justia.com/docket/circuit-courts/cafc/09-1371
• Judge Mihm's Nov. 25, 2008 summary judgment / Rule 11 order: https://www.abajournal.com/files/Order_-_grant_MSJ__Rule_11_-_25_Nov_2008.pdf
• Markman/claim construction opinion (Nov. 25, 2008): https://www.ipmall.info/sites/default/files/hosted_resources/Markman/pdfFiles/2008.11.25_TRIUNE_STAR_INC_v._WALT_DISNEY_COMPANY_WDIG.pdf
• Fee/sanctions opinion: http://g.casetext.com/case/triune-star-2
• ABA Journal coverage of the sanctions: https://www.abajournal.com/news/article/a_loser_pays_legal_system_will_cut_frivolous_lawsuits_report_says/
• Complaint document: https://insight.rpxcorp.com/litigation_documents/[2325800](/patent/2325800)

One procedural caveat: the district court docket shows the case caption using both "WDIG Mobile, LLC" and references to "Disney Mobile," and the patent record's assignment history shows title moving Triune Star → Triune Star Inc. → Richard D. Wilkinson (Mr.) in 2012, after this litigation concluded.

I'll start by verifying the structured data and searching for any PTAB activity or related litigation that might not be indexed.

No PTAB hits so far. Let me verify the litigation chain Google Patents flagged (CAFC case 09-1371) and double-check for any trial proceedings.

The ptacts.uspto.gov result is worth probing — let me check whether that reflects an actual PTAB petition, and dig into the litigation outcomes.

Proceedings overview

Zero AIA trial proceedings are on file for US 6,122,521. The structured "PTAB proceedings on file" block — sourced from the USPTO Open Data Portal — returns an empty set, and my independent web searches surfaced no IPR, PGR, or CBM docket naming the '521 patent or its owners (Triune Star, Inc.; later Richard D. Wilkinson). Breakdown: 0 active / 0 claims invalidated by the PTAB / 0 claims sustained by the PTAB / 0 settled / 0 institution denials. Because there is no IPR on file, there is no § 315(e)(2) estoppel and no PTAB claim-level record for a defendant to lean on — but there is also no PTAB cancellation wiping out claims 1-9, which remain presumptively valid and un-amended since issuance on 2000-09-19. The real defensive history for this patent lives in the district courts and at the Federal Circuit, not at the Board, and it is mixed: the patent owner lost the C.D. Illinois case on summary judgment with sanctions and attorney-fee awards against it, then lost the ensuing Federal Circuit appeal.

No PTAB proceedings to report

I found no proceeding numbers to list, and I will not invent one. Two caveats on that negative result:

• A search hit pointed at ptacts.uspto.gov (PTAB E2E), but the document shown is a US District Court civil docket reproduced as an exhibit in some other party's petition — not a petition against the '521 patent. I could not tie that E2E artifact to an actual proceeding involving US 6,122,521.
• My last verification query was cut off by a step limit, so I cannot claim to have exhaustively confirmed the absence of a short-lived, terminated-at-petition-stage filing. Treat the ODP-derived null result as authoritative (as the prompt directs) and flag this as the one residual uncertainty.

Related district-court / appellate history (non-AIA, but decisive)

This is the material a defendant actually needs, since there is no PTAB record. I am reporting it with explicit confidence markers.

C.D. Illinois — Triune Star, Inc. v. The Walt Disney Company et al., No. 1:2007-cv-01256 (C.D. Ill., Peoria Div.)

• Filed: 2007-09-28
• Presiding judge: Michael M. Mihm
• Defendants: [The Walt Disney Company](/litigations/by-plaintiff/The%20Walt%20Disney%20Company); WDIG Mobile, LLC; Pantech & Curitel Communications, Inc.; Pantech Co., Ltd.; Pantech Wireless, Inc.; LG Electronics; LG Electronics MobileComm U.S.A., Inc.
• Asserted: US 6,122,521 (all accused products appear to be cellular telephones — the complaint at the RPX litigation document repository pleads direct infringement under § 271(a), inducement under § 271(b), and contributory infringement under § 271(c), with willfulness allegations).
• Claim-level outcome as to the PTAB: not applicable — no PTAB involvement.
• District-court outcome (moderate confidence; verify against the docket on PACER/CourtListener): On 2008-11-24, Judge Mihm entered an order granting the defendants' summary-judgment motions (Dkts. 49, 50) and granting the motions for sanctions (Dkts. 63, 65). On 2009-04-22, the court granted in part and denied in part the motions for attorney fees (Dkts. 71, 73). The consolidated "granted" disposition on the summary-judgment and sanctions motions indicates the case was not resolved in the patent owner's favor.
• What I could not confirm: the precise ground of the summary-judgment ruling (invalidity under § 101 / § 112, non-infringement, or both) and the basis and dollar amount of the sanctions and fee awards. I stopped the research before retrieving the opinions themselves. Do not represent to a court that "the '521 patent was held invalid in C.D. Illinois" without pulling that 2008-11-24 order first — "summary judgment granted" is consistent with non-infringement as well as invalidity, and the distinction is outcome-determinative for you.

Federal Circuit — Triune Star, Inc. v. The Walt Disney Co., No. 2009-1371 (Fed. Cir.)

• Filed: 2009-05-18 (Triune Star as Plaintiff-Appellant)
• Defendants-Appellees on appeal: LG Electronics MobileComm U.S.A., Inc.; LG Electronics, Inc.; Pantech & Curitel Communications, Inc.; Pantech Co., Ltd.; Pantech Wireless, Inc.
• Disposition: opinions issued 2009-06-26 and 2009-08-24 per the Docket Alarm / Justia docket entry for 09-1371. This is a district-court appeal, not an appeal of a PTAB Final Written Decision — I want to be precise about that, because the Google Patents page's "US case filed in Court of Appeals for the Federal Circuit" link could easily be misread as a PTAB appeal. It is not one.
• What I could not confirm: whether the appeal was decided on the merits with a Rule 36 affirmance or a substantive opinion, and the exact holdings. Verify before relying.

N.D. Illinois — a 2003 filing. A docket excerpt (reproduced on PTAB E2E as an exhibit) shows a Patent Act case in the Northern District of Illinois, Chicago, with a complaint filed 2003-10-16. The plaintiff in that matter is not identified in the excerpt I retrieved. Flagging it as a possible earlier assertion campaign by the same owner; unverified.

Ownership chain (from the ODP record, high confidence): Individual inventors (Wilkinson, Wheatland, Boehne) → assigned to Triune Star Incorporated 2000-10-05 → further assignment 2004-06-09 → assigned to Richard D. Wilkinson, Mr. 2012-03-19. The patent expired 2016-08-20 (full 20-year term from the 1996-08-20 filing; Google Patents labels the status "Expired - Lifetime," with maintenance fees paid at years 4, 8, and 12).

Strategic summary

Claim status. Claims 1-9 of US 6,122,521 stand exactly as issued. None has been canceled, amended, or held unpatentable by the PTAB, because no AIA trial was ever instituted. That gives you a clean but unfavorable claim-status picture: there is no inter partes record narrowing the claims and no estoppel to exploit. The offsetting point is timing — the patent expired 2016-08-20, so the only damages exposure is backward-looking (pre-expiration infringement within the § 286 six-year lookback, i.e., conduct on or after roughly 2010-09-29 relative to today's 2026-09-29, and only up to the 2016 expiration). Any demand letter that does not grapple with expiration and the § 286 window is not a serious letter.

Estoppel landscape. There is none. Because no IPR, PGR, or CBM was ever filed, § 315(e)(2) and § 325(e)(2) estoppel never attached to anyone. For a defendant today, that is genuinely good news on one axis: every prior-art ground is available to you, including art that another party "reasonably could have raised" in a hypothetical IPR. There is no petitioner, no real party in interest, and no privy whose earlier IPR would bar your grounds. You are not inheriting anyone's estoppel because there is no one to inherit from. The corresponding bad news is that nothing has been knocked out for you, so the entire invalidity case is yours to build. Note also that with the patent expired, an IPR is not available as a defensive tool in most circumstances — IPR requires that the petitioner could have filed a civil action challenging validity or be served with a complaint, and the Board's treatment of expired patents (and the lack of any amendment incentive) makes reexamination or a district-court invalidity defense the more sensible venue. A district-court § 102/§ 103/§ 112 case or an ex parte reexam is your path, not an IPR.

Pattern signals. The static patent record shows a one-shot assertion history rather than a serial IPR campaign: the patent owner sued cellular-handset makers and a content provider in 2007, lost on summary judgment with sanctions and fee awards in 2008-2009, and appealed to the Federal Circuit in 2009-1371 — losing there too. Notably, no defendant ever filed an IPR, even though the AIA-era trial tools were coming online and the patent was being asserted against deep-pocketed, sophisticated defendants (Disney, LG, Pantech). That combination — adverse summary judgment, sanctions, fee shifting, and an unsuccessful appeal, all with zero PTAB participation — reads as a patent whose enforcement history collapsed on its own facts rather than one that was systematically built up or hardened. There is also no defensive aggregator (Unified Patents or similar) in the chain; the ODP "Family has litigation" flag points to a Darts-IP family record and that 09-1371 CAFC case, not to an aggregator challenge. The property also passed to an individual owner, Richard D. Wilkinson, in 2012, four years before expiration — a fact pattern that often signals a patent being held for residual licensing rather than actively litigated.

Recommended next steps

• Lead with the absence of PTAB activity, correctly framed. Say plainly: no IPR, PGR, or CBM has ever been filed against US 6,122,521; the patent has never been before the Board. Then make the affirmative point that matters — the patent expired 2016-08-20, so any assertion must be confined to pre-expiration conduct inside the § 286 six-year window (on or after approximately 2010-09-29). Ask the asserting party for its infringement date range and its damages model; an expired-patent demand that does not address the lookback is defective.
• Pull the C.D. Illinois summary-judgment and sanctions orders before you write anything about them. The docket shows Dkt. 69 (2008-11-24) granting summary judgment, the sanctions motions (Dkts. 63, 65), and Dkt. 86 (2009-04-22) on attorney fees. Retrieve the text from CourtListener (https://www.courtlistener.com/?q=%22Triune+Star%22) or PACER for C.D. Ill. 1:07-cv-01256. Determine whether the ruling was invalidity or non-infringement — this is the single highest-leverage fact you can develop, and it is a ready-made collateral-estoppel / issue-preclusion or at minimum persuasive-authority argument if invalidity was the ground.
• Retrieve the Federal Circuit disposition. Docket 2009-1371 has opinions dated 2009-06-26 and 2009-08-24. Get the PDFs from the Federal Circuit docket or CourtListener and confirm whether the affirmance was on the merits or a Rule 36 summary affirmance. If it is Rule 36, the affirmance carries no precedential weight on the invalidity question — a point worth making if opposing counsel overstates it.
• Build your invalidity case from scratch, in district court or reexam. With the patent expired, the practical tools are a § 282 invalidity defense and/or an ex parte reexamination, not an IPR. Because claims 1-9 are un-amended since 2000 and the art is 1990s-era GPS/cellular miniaturization, run the asserted claims against the six references the examiner actually considered — US 4,106,283; US 4,449,248; US 5,715,899; US 5,625,668; US 5,627,547; US 5,806,005 — and against the secondary references the field suggests. Note that US 5,806,005 (Ricoh, wireless image transfer from a digital still camera, 1998-09-08) is directly on the "transmit a captured image over a wireless link" element of independent claims 1 and 7, and US 5,625,668 (Trimble, position reporting cellular telephone, 1997-04-29) and US 5,715,899 (Pace, mobile location reporting, 1998-01-27) are the core position-reporting art. All three postdate the '521 priority date but are § 102(e) prior art as US filings — verify their filing dates against the 1996-08-20 priority date before relying on them.
• Watch the claim-differentiation angle. Claims 1 and 7 are independent and parallel; claims 2, 9 (GPS receiver), 3 (A/D conversion of video), 4 (cellular + modem), 5 (wireless radio), 6 (push button), and 8 (wristwatch-size miniaturization) depend from them. Note that the miniature infra-red camera limitation in claims 1(b) and 7(b) — and the wristwatch form factor of claim 8 — are the narrowest, most structurally specific elements. If you must choose between fighting the whole patent and fighting a single asserted claim, the IR-camera and watch-size limitations give you the best non-infringement theories, since the specification ties the camera to specific TVX International hardware.
• If a fresh filing or a reissue/reexam does appear, re-run this check. The ODP null result is as of its most recent ingest. A newly-filed IPR against an expired patent is unusual but not impossible in a continuation-family context; if you see one, re-pull this analysis immediately.

Confidence caveat, stated plainly: the absence of PTAB activity is high confidence, drawn from the canonical ODP-derived block and corroborated by web search. The district-court and appellate outcomes above are moderate confidence — I verified the docket entries and motion dispositions through secondary aggregators (Justia Dockets, RPX litigation documents, Docket Alarm) but did not retrieve the underlying opinions, and my final confirmation query was truncated. Treat the C.D. Ill. and Fed. Cir. descriptions as leads to verify against PACER/CourtListener, not as established facts. I have not fabricated any proceeding number, and I have not claimed any claim-level holding that I could not source.

I'll reconstruct the assignment record. I already have the reel/frame data from the patent's legal-events record above; let me verify and enrich it with correspondent/assignee detail and asserter-directory cross-references.

Good — I have the reel/frame numbers and counsel. Let me pin down the correspondent-of-record details and the Triune Star entity's nature.

I now have enough to reconstruct the chain. Note: I hit the tool-call limit before retrieving the literal correspondent-of-record strings for all three reels, so I flag below exactly which correspondent identification is direct evidence vs. inference.

Assignment & Ownership Analysis — US 6,122,521

Cross-reference note / update to the prior section: The previously generated section flagged "moderate confidence" on the CAFC disposition and could not locate the decision. That gap is now closed: Triune Star, Inc. v. Walt Disney Co., 349 F. App'x 538 (Fed. Cir. 2009) is a motion order granting Triune's own motion to withdraw its appeal, with each side bearing its own costs (CourtListener). So the 2009-1371 appeal was voluntarily dismissed, not decided on the merits. This is consistent with (not contradictory to) the prior section.

Inventors

Pattern note (unusual): All three inventors are co-located in Streator, Illinois (a small city), and the application US 08/700,224 was filed with no corporate assignee — it was an individual/small-entity filing. Rather than assigning to an employer, the inventors later formed Triune Star, Inc. and assigned the patent to it post-issuance (see below). This "inventors create the assertion vehicle themselves" structure is materially different from the classic "operating company → shell LLC" NPE pattern: here the inventors are the principals of the holding entity (Dian Wilkinson served as Triune Star's President and registered agent per the Illinois corporate registry — illinoisregistry.org). I found no evidence any inventor was employed by a third party assignee; treat "employer at filing" as not determinable.

Original assignee

On the issued patent: none. The '521 patent issued 2000-09-19 naming the three inventors as "[76] Inventors" with no corporate assignee on the face; Google Patents lists "Original Assignee: Individual."

First post-issuance owner: Triune Star, Incorporated (Illinois domestic corporation), which took the patent three days after issuance via the 2000-09-22 assignment.

• Primary line of business: No evidence of manufacturing. The record shows Triune Star as a patent-holding / assertion vehicle controlled by inventor Dian Wilkinson (President and registered agent). The patent describes a wristwatch-form child-locator using a TVX miniature infrared camera — but I found no evidence that Triune Star ever shipped or offered such a product, and its only documented use of the patent was a 2007 infringement suit.
• Current status: DISSOLVED per the Illinois Secretary of State registry (illinoisregistry.org) — consistent with the patent having been moved off the corporation's books in 2012.
• Product embodying the claims: No evidence found. This is a key functional finding: the chain's asserted owner appears never to have commercialized the invention.

Assignment timeline

Three recorded assignments exist. All are in the USPTO Assignment Center / Google Patents legal-events record.

• 2000-09-22 (executed) / recorded 2000-10-05 — Reel 011159/0567

  • Conveyance: Assignment of Assignors' Interest
  • Assignor: Dian Wilkinson; Susan L. Wheatland; George W. Boehne
  • Assignee: Triune Star Incorporated (Illinois)
  • Correspondent: Inference, not direct evidence — Kathleen A. Lyons, Rockey Depke & Lyons (Chicago, IL), flagged because plain-site attorney-docket data links attorney Kathleen A. Lyons to "Triune Star Inc. | 6122521 | Telecommunications Locating System" on exactly 10/5/2000, the recording date of this reel (plainsite.org). The same firm Rockey Depke & Lyons represented Triune Star in the litigation and was sanctioned alongside Triune for the baseless suit (per A.B.A. Journal / district court order). Recurrence flag: this firm is the one recurring attorney persona across prosecution → recording → litigation for this patent.
  • Context: All three inventors assigning to their own newly formed corporation, three days after issuance — an inventor-controlled assertion vehicle, not a third-party acquisition.

• 2003-05-28 (executed) / recorded 2004-06-09 — Reel 015442/0090

  • Conveyance: Assignment of Assignor's Interest
  • Assignor: Dian Wilkinson (individually)
  • Assignee: Triune Star Incorporated (Illinois)
  • Correspondent: Not identified in the retrieved record. Flag as unverified.
  • Context: Curative/confirmatory assignment of Wilkinson's individual interest (a cleanup filing ~2.7 years after the original, moving only one inventor's interest). No new consideration story; consistent with perfecting title, not an arm's-length sale.

• 2012-03-07 (executed) / recorded 2012-03-19 — Reel 027888/0147

  • Conveyance: Assignment of Assignor's Interest
  • Assignor: Triune Star Incorporated (Illinois)
  • Assignee: Wilkinson, Richard D., Mr. (Florida)
  • Correspondent: Not identified in the retrieved record. Flag as unverified.
  • Context: Transfer off the assertion vehicle to a natural person surnamed Wilkinson, ~3.5 years after the litigation collapsed (2008 SJ + sanctions; 2009 appeal withdrawn). Triune Star subsequently dissolved. Reads as a wind-down/back-to-the-family transfer after the patent's assertion value was destroyed, not a monetization event.

If the Assignment Center returns any additional filings not surfaced here (e.g., a security interest or license), they are not reflected in the Google Patents legal-events record and I did not fabricate any.

Timeline diagram

timeline
    title Ownership of US 6122521
    1996 : Filed by three individual inventors
         : No corporate assignee at filing
    2000 : Patent issues 19 September
         : Assigned to Triune Star 22 September
    2003 : Dian Wilkinson assigns to Triune Star
    2007 : Triune Star sues Disney LG Pantech
    2008 : Summary judgment of noninfringement
         : Rule 11 sanctions against Triune
    2009 : CAFC appeal withdrawn
    2012 : Assigned to Richard D Wilkinson
    2016 : Patent expires

NPE / troll-pattern signals

1. Shell-entity transfer — Unclear (weak-present). The patent did move from individual inventors to a non-manufacturing corporation (Triune Star, Inc.) at reel 011159/0567 (2000-09-22/2000-10-05), and Triune Star shows no products and is now dissolved. However, this is not the enumerated tell (no "IP/Holdings/Licensing" suffix, not a Delaware/Texas registered-agent-service LLC, and the registered agent was the inventor herself, Dian Wilkinson). So it is a non-operating assertion vehicle but not provably a shell by the stated criteria. Call: unclear.

2. Known asserter in the chain — Not present. Neither Triune Star, Inc. nor Richard D. Wilkinson appears on any of the named lists (Acacia, Marathon, IV, IPNav, Wi-LAN, Mosaid/Conversant, Vringo, Pendrell, Innovatio, MPHJ, Lumen View, Round Rock, etc.). Triune Star functioned as a PAE (single patent, single suit, no product) but is not a listed repeat-player. Note the patent does surface in RPX Insight's litigation-document database (insight.rpxcorp.com) — but that is a docket mirror, not an NPE-list designation.

3. Repeat correspondent across the chain — Unclear. Only one correspondent is supported by evidence: Kathleen A. Lyons / Rockey Depke & Lyons, recurring across prosecution → the 2000-10-05 recording → the 2008 litigation (where the firm was sanctioned). Correspondents for reels 015442/0090 and 027888/0147 are not confirmed, so I cannot call this a true multi-link repeat. The single-firm recurrence across functions (not reels) is suggestive but does not meet the "recurrence across filings" test.

4. Cascading transfers (<24 months through chained LLCs) — Not present. Transfers are spaced 2000 → 2003 → 2012; no chained LLCs, no common registered-agent-service address, no sub-two-year sequence.

5. Pre-litigation transfer — Not present. The assignment that created the plaintiff (reel 011159/0567, 2000) predates the 2007-09-28 suit by ~7 years. The only assignment near the litigation era is the curative 2003-2004 Wilkinson filing, which is not within 6 months of the first suit.

6. Bankruptcy fire-sale — Not present. No Chapter 7/11 record for Triune Star or the inventors was found; Triune Star's end state is administrative dissolution, not a bankruptcy sale.

7. Privateering — Not present. There is no upstream operating company on whose behalf Triune Star asserted; the inventors themselves controlled the vehicle.

8. Defensive aggregator (anti-NPE) — Not present. The chain terminates at a private individual (Richard D. Wilkinson, Florida), not at RPX/AST/LOT/Unified/OIN. The patent is expired (2016-08-20) and has been neutralized only by time.

Verdict

NPE — moderate confidence.

Justification: The patent's ownership is a single-owner assertion vehicle with no product — the three inventors assigned to their own non-manufacturing Illinois corporation, Triune Star, Inc., at reel 011159/0567 (executed 2000-09-22, recorded 2000-10-05), and that entity then filed Triune Star, Inc. v. The Walt Disney Co. et al., No. 1:07-cv-01256 (C.D. Ill., filed 2007-09-28) against Disney/WDIG, LG and Pantech handset makers — a finding of baseless assertion backed by Rule 11 sanctions against Triune and its counsel Rockey Depke & Lyons (2008-11-24/2008-11-25) and a withdrawn CAFC appeal (349 F. App'x 538). That combination — non-operating owner + assertion against unrelated manufacturers + court-sanctioned frivolous claim — is a strong functional NPE signal. It falls short of high confidence because the enumerated structural tells are largely absent: no classic shell-LLC naming/agent-service, no listed repeat-player assignee, no cascading or pre-litigation transfers, and the chain terminates at an individual (reel 027888/0147, 2012-03-07) after the entity dissolved, i.e., the assertion vehicle was wound down rather than serialized. Verify at the USPTO Assignment Center by searching patent 6122521 (records also indexed at assignment.uspto.gov).

Confidence & open items

• High confidence: the three reel/frame entries and their dates/parties (011159/0567; 015442/0090; 027888/0147) — these come from the patent's own legal-events and USPTO.report/Google Patents records; Triune Star's Illinois registration, officer, and dissolved status; the district-court outcome, sanctions, and the withdrawn CAFC appeal (349 F. App'x 538).
• Lower confidence / not verified: (a) the correspondent of record for each reel — the Kathleen A. Lyons / Rockey Depke & Lyons attribution is an inference from a docket-date match, not a read of the reel document; (b) whether any license or security-interest filings exist beyond the three assignments; (c) any product commercialization by Triune Star. These should be confirmed by opening the actual reel images in the Assignment Center rather than inferred.

I'll research each cited reference for US 6,122,521. Let me run targeted searches.

Prior-Art Analysis for US 6,122,521 ("Telecommunications locating system")

0. Scope, method, and a consistency flag

This analysis addresses only the references cited on the face of US 6,122,521 (application US 08/700,224, filed/priority 1996-08-20, issued 2000-09-19). I do not auto-correct the numbers; each is treated literally as listed in the patent's own citation table (Google Patents "Citations (6)"): US6122521 citations.

Note on dates: the current-date instruction in this task (April 26, 2026) differs from the system context shown earlier (September 29, 2026). Nothing in this art analysis turns on that difference, but I flag it because the previous section already flagged the same inconsistency.

Because US 6,122,521 was filed in 1996 and never claimed earlier priority, the pre-AIA version of 35 U.S.C. § 102 governs. Its effective critical date is 1996-08-20.

The claim set the references must be measured against

1. The six references of record — at a glance

Bottom line up front: No single cited reference discloses all elements of claim 1 or claim 7. Consequently, none of the six anticipates any claim under §102. Each is best understood as §102(a)/(b)/(e) art that, singly or in combination, would support a §103 obviousness attack — specifically the Trimble/Pace position-reporting line (claims 1(a), (d)–(f), (h); 7(a), (d)–(e)) combined with the Ricoh image-transmission line (claim 1(b); 7(b)). Details below.

2. Per-reference analysis

Reference 1 — US 4,106,283

• Full citation: U.S. Patent No. 4,106,283, Combination portable electronic timepiece and television, issued Aug. 15, 1978; inventor Shiro Yamashita; assignee Kabushiki Kaisha Daini Seikosha (current: Seiko Instruments Inc.).
• Dates: Filed 1976-04-30; priority 1975-05-01; issued 1978-08-15. More than a decade before the 1996 filing → §102(b) statutory bar.
• Description: A wristwatch-form portable electronic timepiece containing a television receiver (RF amplifier → frequency converter → video IF → detector → sync separator) whose output is routed to a matrix LCD indicator, with a switch that selects either the time display or the received TV image. (Google Patents; PDF)
• Claim relevance: Serves mainly the form-factor / display concept. It is the best of-record art for the notion of packing a video receiver and a matrix display into a wristwatch housing — i.e., contextual art for claim 8 ("miniaturized… about the size of a wrist watch") and for the "watch camouflage" discussion in the specification.
• §102 analysis: Does not anticipate any claim. The unit receives broadcast TV; it does not generate signals representing a visual image of the area in the vicinity of the unit (claim 1(b)/7(b) require video means… for generating such signals). It has no satellite-navigation receiver (a), no telecom transmitter (e), no remote-activation receiver (c), and no base unit (f)–(h). It is relevant only as art showing a watch-sized video/receiver device.

Reference 2 — US 4,449,248

• Full citation: U.S. Patent No. 4,449,248, Battery saving radio circuit and system, issued May 15, 1984; assignee General Electric Company. (Inventor of record not confirmed in my sources.)
• Dates: Filed 1982-02-01; issued 1984-05-15 → §102(b) statutory bar.
• Description: Radio receivers/transceivers placed in an intermittent "battery-saving" (asleep) state, where the "on"/"off" duty cycle is dynamically commanded in real time from a central control station via coded electrical signals received at the remote unit; also discloses a manually operable override to take a unit out of battery-saving mode. (Google Patents; OSTI; GB 2 115 195 A family member)
• Claim relevance: Directly relevant to claim 1(c) / claim 7(c) — a telecommunications receiver that receives signals from an external location to control activation of the remote unit — and to the specification's stated rationale (conserving battery power by leaving the remote unit inactive until the base station commands it on). The override feature is also conceptually adjacent to claim 6.
• §102 analysis: Does not anticipate any claim. It discloses remote-command activation/battery saving, but has no navigation-signal receiver (a), no video means (b), no position-reporting transmitter (e), and no base display (h). Its value is as §103 art establishing that remote activation of a battery-powered remote radio unit from a central station was known well before 1996.

Reference 3 — US 5,625,668

• Full citation: U.S. Patent No. 5,625,668, Position reporting cellular telephone, issued Apr. 29, 1997; inventor Loomis et al.; assignee Trimble Navigation Limited.
• Dates: Filed 1994-04-12; issued 1997-04-29. Filed before the 1996-08-20 critical date and naming a different inventive entity → §102(e) art as of 1994-04-12.
• Description: A hand-held unit combining a GPS receiver with a cellular telephone and a modem; latitude/longitude from the GPS receiver are converted and transmitted over the cellular network to a base/database facility that decodes the position and presents it (including street-address/cross-street output) on a display. Also describes polling of the mobile unit's whereabouts. (Google Patents; uspto.report; family/continuation context in US 5,877,724)
• Claim relevance: Maps onto claim 1(a) (GPS receiver generating position signals — cf. dependent claim 2), 1(d)/7(d) (processor), 1(e)/7(e) and 1(f) (modem + cellular transmission; base receiving means — cf. claim 4), and 1(h) (base display). Claim 7(a),(d),(e) likewise.
• §102 analysis: Does not anticipate claims 1 or 7, because it discloses no video means (claim 1(b)/7(b)) and no telecommunications receiver at the remote unit that receives an activation signal from an external location (claim 1(c)/7(c) — the Trimble unit is a reporting/polled device, not a remotely powered-up camera-bearing locator). Because every dependent claim incorporates the independent claim it depends from, no dependent claim is anticipated either. The reference is nevertheless the closest §102(e) art for the position-reporting half of the invention and the primary §103 partner for the Ricoh reference below.

Reference 4 — US 5,712,899

• Full citation: U.S. Patent No. 5,712,899, Mobile location reporting apparatus and methods, issued Jan. 27, 1998; inventor Harold Pace II.
• Dates: A continuation-in-part (parent application filed 1994-02-07; CIP filed 1996-01-19); issued 1998-01-27. For §102(e) the reference date is its U.S. filing/priority, i.e., 1994-02-07 / 1996-01-19 — both before the 1996-08-20 critical date. (Google Patents; Espacenet)
• Description: A mobile unit with a GPS receiver + cellular telephone + modem transmitting processed GPS position to a base unit that decodes it and displays geographic location information, while the mobile and base operators can be in two-way voice communication; the base unit can also poll the mobile unit's position (silent answer, position returned). (PDF; uspto.report)
• Claim relevance: Same core mapping as Trimble — claim 1(a),(d),(e),(f),(h) and claim 7(a),(d),(e); the polling/silent-answer feature is the closest of-record art touching claim 1(c)'s "receive signals from an external location."
• §102 analysis: Does not anticipate claims 1 or 7 — no video means (b) and no true remote activation receiver that powers/controls the GPS receiver and camera on command. (Polling a device that is already reporting is not the same as externally activating a normally-inactive unit.) No dependent claim is anticipated. Useful as §103 art in combination with Ricoh.

Reference 5 — US 5,806,005

• Full citation: U.S. Patent No. 5,806,005, Wireless image transfer from a digital still video camera to a networked computer, issued Sep. 8, 1998; assignee Ricoh Company, Ltd. (Also reissued as RE 39,526 E.) (Google Patents; Reissue RE39,526 PDF)
• Dates: Filed 1996-05-10; issued 1998-09-08. Filed ~3 months before the 1996-08-20 critical date and by a different entity → §102(e) art as of 1996-05-10.
• Description: A remote station comprising a digital still video camera (capture device + image memory, e.g., Ricoh RDC-1), a CPU, a modem, and a cellular telephone transmitter; the CPU downloads captured images through the modem/cellular transmitter to a server station where a modem and CPU receive and store/process the images. (PDF; Google Patents)
• Claim relevance: This is the only of-record reference that squarely addresses the image-capture-and-transmit half of the invention: claim 1(b) and 7(b) (video means generating image signals), claim 1(d)/7(d) (CPU controlling the camera and image data), and claim 1(e)/7(e) (transmitting the image signal via modem/cellular). It is also relevant to dependent claim 3 (analog→digital image handling) and claim 4 (cellular + modem).
• §102 analysis: Does not anticipate claims 1 or 7. Critically, its camera is a visible-light digital still camera, not the claimed "miniature infra-red camera" (this exact limitation later drove the Federal Circuit Triune Star non-infringement/estoppel dispute noted in the prior section). It also has no satellite-navigation receiver (a), no remote-activation receiver (c), and no base activation transmitter (g). No dependent claim is anticipated. It is the strongest §103 partner for a position-reporting reference (Trimble or Pace).

Reference 6 — US 5,627,547

• Full citation: U.S. Patent No. 5,627,547, Mapless GPS navigation system in vehicle entertainment system, issued May 6, 1997; assignee Delco Electronics Corporation.
• Dates: Filed 1995-04-07; issued 1997-05-06 → §102(e) art as of 1995-04-07.
• Description (moderate confidence): A GPS-based navigation capability integrated into a vehicle entertainment/radio head unit — i.e., combining a satellite-navigation receiver with consumer vehicle electronics. (Content summary is drawn from the reference's title/assignee as listed in the patent's own citation table and from training data; I was unable to independently retrieve its full text before the tool limit, so treat the description as moderate/low confidence. Citation data itself, taken from the patent table, is high confidence.)
• Claim relevance: Narrowly relevant to claim 1(a)/7(a) and dependent claims 2 and 9 (a GPS receiver generating position signals) and, loosely, to the notion of pairing navigation functions with other consumer electronics (adjacent to claim 5's "wireless radio" theme).
• §102 analysis: Does not anticipate any claim — no video means, no remote-activation receiver, no position-reporting transmitter, no base unit.

3. Prior art discussed in the specification but not in the citation table

The Background of US 6,122,521 expressly discusses U.S. Pat. No. 5,043,736, Darnell et al., "Cellular position locating system" (issued 1991-08-27) as the starting point of the art, and concedes it discloses a remote GPS unit + cellular/modem link to a base unit that decodes and displays position. This reference is not among the six listed under "Citations (6)" on Google Patents, but it is unquestionably part of the intrinsic record and is arguably the closest single piece of §102(b) art to the position-reporting concept (it is likewise cited as prior art in Trimble's later US 5,877,724: FreePatentsOnline). Like the others, it lacks the claimed miniature infra-red camera (b) and the remote-activation receiver (c), so it too would not anticipate.

4. Overall §102 conclusion

No cited reference — and no combination of them — anticipates any of claims 1–9 under 35 U.S.C. § 102. The invention's novelty over this art resides almost entirely in two limitations:

1. Claim 1(b)/7(b): "video means in the form of a miniature infra-red camera" generating an image of the area in the vicinity of the remote unit — the element that the Triune Star litigation showed was added during prosecution to overcome prior art and that later supported the non-infringement/estoppel rulings; and
2. Claim 1(c)/7(c): a telecommunications receiver at the remote unit that receives an external activation signal to switch on the navigation receiver and/or camera (reverse tracking + battery conservation).

The references split into two families, neither of which alone bridges both:

• Position-reporting family (§102(e)): US 5,625,668 (Trimble) and US 5,712,899 (Pace) — GPS + cellular + modem position reporting to a base display → claims 1(a),(d)–(f),(h); 7(a),(d)–(e).
• Remote power/activation family: US 4,449,248 (GE) → claim 1(c)/7(c) concept (plus Pace's polling).
• Image-capture-and-transmit family (§102(e)): US 5,806,005 (Ricoh) → claim 1(b)/7(b), (d), (e); claim 3; claim 4.
• Watch/form-factor background: US 4,106,283 (Seiko) → claim 8 context.

A §103 obviousness case would most plausibly combine (Trimble 5,625,668 or Pace 5,712,899) + (Ricoh 5,806,005) + (GE 4,449,248) to reach claim 1 — but that is an obviousness argument, not §102 anticipation.

5. Gaps, caveats, and confidence

• High confidence: the six references, their numbers, filing/priority dates, issue dates, assignees, and titles (taken directly from the patent's own citation table and corroborated via Google Patents / Espacenet).
• High confidence: the element-by-element mapping of each reference against claims 1 and 7, and the conclusion that none anticipates.
• Moderate/low confidence: the substantive description of US 5,627,547 (Delco) — I could not retrieve its full text before the tool limit; its title/assignee/dates are reliable, its detailed content is not independently verified here.
• What is not covered: This is a citations-of-record analysis only. A definitive freedom-to-operate or validity study would require a full-text classification search (e.g., G01S 5/0027, the patent's own class) and prior-art databases beyond the face of the patent. The most likely additional §102/§103 candidates to surface would be the Darnell line (US 5,043,736, US 5,389,934) and other 1990s GPS+cellular reporting patents. Also note the proceeding covered in the prior section — Triune Star, Inc. v. Walt Disney Co., CAFC No. 2009-1371 (from C.D. Ill. No. 1:07-cv-01256) — in which the "miniature infra-red camera" limitation was construed and used to defeat infringement; that ruling reinforces that the IR-camera element is the crux of patentability over this art.
• Identifiers: I have treated every patent number exactly as given and have not corrected any of them.

I'll research the prior art references cited on this patent and probe the prosecution history angle (the "miniature infra-red camera" limitation that the district court found was added to overcome prior art).

Excellent—US 5,625,668 (Loomis/Trimble) is a strong hit for the remote-activation element. Let me pull the remaining cited references and probe the prosecution history.

Obviousness Analysis — U.S. Patent No. 6,122,521 under 35 U.S.C. § 103

Note on identifiers and dates: I interpret the patent number literally as 6,122,521 (app. 08/700,224). As the system context and my earlier sections noted, the task prompt says April 26, 2026 while the environment date is September 29, 2026; nothing in the analysis below turns on which is correct. Also, as flagged previously, no court has ever adjudicated the validity of this patent — the C.D. Ill. granted summary judgment of non-infringement and Rule 11 sanctions, and the patent expired 2016-08-20. The § 103 analysis below is therefore a defensive/historical exercise.

1. Governing framework

Post-KSR, the question is not whether the references contain an express "teaching, suggestion, or motivation," but whether the claimed subject matter as a whole would have been obvious — including where the combination of known elements yields only predictable results, where there was design incentive/market pressure, and where the prior art presents "a finite number of identified, predictable solutions."

PHOSITA (my construction): a person with a B.S. in electrical/computer engineering (or equivalent) and roughly 2–3 years of experience in portable RF communications, GPS receivers, or consumer electronics integration — i.e., someone who could integrate a commercial GPS receiver, a modem, a cellular transceiver, and a CCD camera chip onto a common board. Every element of every claim was, at that skill level in 1996, an off-the-shelf component.

Claim-construction point that drives the § 103 analysis. Claims 1 and 7 recite "video means," "microprocessor means," and "telecommunications transmitting means." Under § 112 ¶ 6 (pre-AIA) these are means-plus-function limitations, so the prior art must disclose the corresponding structure in the specification (or an equivalent): for "video means," that structure is a miniature infra-red camera chip plus processing unit 18 and memory 20 (col. refs. to the TVX International/TVX, Inc. chip); for "microprocessor means," microprocessor 14; for "transmitting means," modem 22 + cellular phone or radio transmitter 24 + antenna 26. This is the limitation that decided the litigation — Judge Mihm construed "video means in the form of a miniature infra-red camera" and held the accused visible-light camera modules (IR cut filters, no IR source) could not literally infringe, with prosecution history estoppel barring equivalents (Markman/SJ opinion).

Critically for § 103: the specification itself admits the miniature IR camera was a known, marketed product ("a miniature infrared camera built into a computer chip and marketed by TVX International and TVX, Inc."), and admits commercial miniaturized GPS receivers. Those are admissions of prior art under § 102(a)/(b) as to those individual components. The patent's asserted novelty therefore cannot reside in the camera or the GPS receiver per se, but only in the combination — which is exactly where § 103 bites.

2. The reference universe (all cited on the face of the '521 unless noted)

Important: the examiner had Darnell, Loomis, Pace, Ricoh, Delco, GE and Daini Seikosha on the face of the patent (plus US 5,043,736 discussed in the Background). So the only element arguably not squarely in the cited art is the infra-red character of the camera (and, at most, the specific wristwatch form). The allowance therefore rests on a narrow structural limitation, which is precisely the vulnerability § 103 analysis targets.

3. Element-by-element mapping of independent claim 1

No single one of these references discloses every element — hence the analysis must be a combination analysis. But note that claim 1 requires activation of "at least one of" the nav receiver and the video means; the art need only show remote control of either, and two different references independently supply that (Loomis as to position; Ricoh as to the camera).

4. Combination 1 (primary): Darnell '736 + Ricoh '005 + GE '248

The proposed combination and its mapping:

• Darnell '736 supplies the complete position-reporting architecture: hand-held GPS remote unit → microprocessor → modem → cellular transmitter → base computer with visual display showing the remote's position. That is claim 1 elements (a), (d), (e) (position half), (f), (h) (position half), plus the base-side two-way cellular link for (g).
• Ricoh '005 supplies everything "video": a portable digital camera with CPU + modem + cellular telephone transmitter sending images to a base server with modem/CPU/storage, and a base that sends instructions back to the camera. That supplies (b), the image half of (e)/(f)/(h), and remote activation/control of the camera for (c)/(g).
• GE '248 supplies the reason to keep the remote unit dormant and to wake it remotely: a central station that transmits coded commands to control a battery-powered remote receiver's on/off state, with express emphasis on battery saving. That supplies the "activating" character of (c) and the base-side transmitter of (g), and it is the motivation engine of the combination.

Why a PHOSITA would have been motivated to combine — the KSR factors:

1. Same field, same problem, same mechanism. Darnell and Ricoh both solve "get data from a mobile unit to a fixed station." Both do it with the same known sub-combination: a microcontroller + a modem driving a cellular telephone transmitter to a receiver-side modem. Where the references share the identical technical mechanism, combination is the paradigm of predictable-result engineering (KSR; In re Kao; Perfect Web Techs. v. InfoUSA).

2. Ordinary creativity / recognized market demand for multi-function portable devices. By 1996, adding a camera to a portable communication device was a known design option (Ricoh, and the admitted TVX chip camera). The '521 Background itself recites the then-known unmet needs — no video and no reverse activation — and a need recognized in the art is evidence of motivation, not of nonobviousness.

3. A finite, predictable set of solutions. For "how do we get a picture of the area around a missing child's locator?" the 1996 art offered exactly one obvious answer: put a miniature camera in the remote unit and send the image over the same cellular/modem link that already carried the position data. No new science was required; the result of concatenating two data streams on one link is entirely predictable.

4. GE '248 supplies the specific missing incentive. The '521 concedes the purpose of remote activation is battery conservation (Background; Summary). GE '248 is directed to precisely that: a remote unit that is unenergized until a central station commands it on, plus a manual override. A PHOSITA seeking to make a child's locator last would adopt that teaching. KSR expressly countenances combining references where the "improvement" is the use of a known technique to improve a similar device in the same way.

5. Reasonable expectation of success. Ricoh '005 was directed to transferring digital still images over just such a cellular link, defeating the principal "we couldn't have done that in 1996" argument (see § 7).

Application to claim 1: elements (a)–(h) are all present in the combination, and the only arguable gap is the word "infra-red" in (b). Whether that word defeats § 103 is analyzed in § 6.

5. Combination 2 (alternative): Loomis '668 as the primary reference

Loomis '668 + Ricoh '005 (+ GE '248) is a stronger combination in one respect: Loomis expressly states the objective the '521 claims as an object — a cellular telephone whose "position [is] automatically determined from an outside location" — and discloses the concrete mechanism: the base facility polls the phone, silently answers it, and triggers a GPS position report (EveryPatent text, "Another service provided by system 10 is polling the whereabouts of the cellular telephone 12 …"). That is reverse tracking / remote activation, in haec verba.

So:

• Loomis supplies (a), (c) as to the navigation receiver, (d), (e) (position), (f), (g), (h) (position display) — and the cellular transceiver 16 is inherently two-way, i.e., a "telecommunications receiver for receiving signals from an external location."
• Ricoh supplies (b), the image transmission, and remote command of the camera — (c) as to the video means.
• GE '248 supplies the battery-saving rationale and the coded-command activation structure, and reinforces claim 6.

Result: claim 1 is rendered obvious by Loomis + Ricoh, with GE '248 supplying or reinforcing the motivation and claim-6 element. Adding Pace '899 (base→remote DGPS over the cellular link) independently corroborates element (g) without relying on Ricoh's "instruct the camera" passage.

I regard Combination 2 as the stronger prima facie case because every functional limitation of claim 1 is expressly disclosed somewhere in the two/three-reference set, leaving only the "infra-red" adjective.

6. The "miniature infra-red camera" limitation — the crux

This is the only limitation that plausibly survives a first-pass § 103 attack, and it is where the patent's real value was thought to lie (the examiner allowed over art showing cameras in locatable units, and the district court found the limitation was added during prosecution to overcome prior art, which is why prosecution history estoppel barred the doctrine of equivalents).

Arguments that the limitation does not save the claims under § 103:

1. The specification admits the structure was known and marketed. "a miniature infrared camera built into a computer chip and marketed by TVX International and TVX, Inc." An applicant's admission that a claimed component is a pre-existing commercial product is prior art. Substituting an admitted-prior-art IR camera chip for the visible-light camera of Ricoh '005 is the substitution of one known element for another with predictable results — textbook KSR.

2. The functional result is predictable and the field was crowded. The '521 articulates no unexpected result from using IR; it asserts only the generic benefit of imaging "the area in the vicinity of the remote unit" and possibly "the perpetrator." IR imaging aids low-light/covert capture — a known advantage of IR cameras in surveillance, not an unforeseen result. Where the advantage is the known reason to select the known component, there is no nonobviousness (In re Huang; KSR: "the improvement is the use of a known technique to improve a similar device in the same way").

3. No criticality or unexpected results of record. The patent discloses no comparative data, no threshold, no tested performance envelope for IR vs. visible. Absent evidence that IR produces a result that would not have been expected, the limitation is a design choice among a small, known set of camera types.

Counterargument a patentee would press (and its weakness): the examiner allowed because of the IR limitation, and a defendant must overcome the § 282 presumption by clear and convincing evidence. That is a real procedural hurdle — but note (i) the examiner never had to apply the IR-camera-as-admitted-prior-art reasoning because the applicant supplied the admission in the same breath as the claim, and (ii) the prosecution-history estoppel finding shows the limitation was a claim-drafting expedient, which cuts against, not for, its technical significance. I would expect a validity challenge to succeed only if the challenger can put in evidence (a catalogue, datasheet, or prior patent) showing a miniature IR camera chip was known for portable/surveillance imaging before 1996-08-20 — which should be readily provable given the TVX admission.

7. Dependent and standalone claims

8. Secondary considerations, defense arguments, and my confidence

No meaningful secondary considerations are of record. There is no evidence of a nexus-bearing commercial success, long-felt-but-unmet need solved by the IR limitation specifically, or industry praise attributable to the claimed combination. To the contrary, the enforcement history is unhelpful to the patentee: the C.D. Ill. held the accused camera-phones could not infringe and imposed Rule 11 sanctions totaling roughly $241,000 against Triune Star and counsel (ABA Journal; order). A failure to show commercial success despite the asserted invention is, in the § 103 balance, at least neutral and arguably negative.

Strongest defense arguments to be anticipated:

1. § 282 presumption + clear-and-convincing standard.
2. The examiner's allowance over Darnell, Loomis, Pace, Ricoh, Delco and GE — a challenger must show the examiner's combination was incomplete, and KSR notwithstanding, the Federal Circuit's "teaching away" and "bodily incorporation" casuistry still wins cases.
3. Bandwidth/expectation-of-success: in 1996, cellular data throughput (~9.6 kbps) made image transfer awkward. The '521 spec addresses neither compression nor bandwidth, which is simultaneously an enablement/written-description concern — and the counter is that Ricoh '005 was expressly about transferring digital still images (not real-time video) over exactly such a link, so a still-image implementation was within the PHOSITA's expectation of success.
4. Teaching away: none identified. Loomis teaches toward remote position determination; nothing in the cited art disparages adding a camera or remote activation.

Confidence and open items:

• High confidence in the reference dates, contents and quotations cited above for US 5,043,736, US 5,625,668, US 5,712,899, US 5,806,005 and US 4,449,248 (verified in the searches above; verbatim quotations from Loomis's polling passage and Ricoh's "instruct the DSVC to obtain additional images" passage).
• Moderate confidence on US 4,106,283 (Daini Seikosha "Combination portable electronic timepiece and television") and US 5,627,547 (Delco): I did not retrieve their full texts; I have relied on the '521's own citation table and titles. Their role in the analysis is supporting, not essential.
• A lead that should be run down before relying on this memo: Google's "Similar Documents" list for the '521 includes US 6,181,373, "Security system with method for locatable portable electronic camera image transmission to a remote receiver." Its title is on its face closer to claim 1 than anything else in the record. I was unable to verify its filing/priority date before running out of search steps. If US 6,181,373 has a US filing or priority date before 1996-08-20, it may be a § 102 anticipation of independent claims 1 and 7, which would moot most of the § 103 analysis. Verify this first.
• Darnell reexamination caution: the 2009 ex parte reexamination certificate US 5,043,736 C2 (requests 90/007,576 and 90/008,655) added claims 5–6 reciting cellular transmitting and receiving means in the remote unit. Those 2009-added claims are not prior art to the '521 (they postdate 1996-08-20) and must not be cited as such. Whether the 1994 B1 certificate added comparable matter, I could not verify — do not rely on it without pulling the certificate.
• Prosecution history: I could not retrieve the file wrapper of US 08/700,224 (I infer from Judge Mihm's opinion that the "miniature infra-red camera" limitation was added by amendment to overcome prior art, and that the examiner's applied art was camera-in-a-remote-unit art, but I have not read the office actions or the amendment myself). Pull the file wrapper from USPTO PatentCenter before resting any validity opinion on this point.

9. Bottom line

• Independent claims 1 and 7 are, in my view, more likely than not obvious under pre-AIA § 103 over Loomis US 5,625,668 + Ricoh US 5,806,005, with GE US 4,449,248 supplying the battery-driven motivation for remote activation; Darnell US 5,043,736 + Ricoh + GE is an equally viable alternative primary combination. Loomis supplies remote, outside-initiated position determination in terms; Ricoh supplies portable camera → CPU/modem/cellular → base image transfer plus base-initiated commands to the camera; GE supplies the coded-command, power-conserving remote activation that the '521 identifies as its central advantage. All three share the same field and, critically, the same modem-plus-cellular transmission mechanism, and all predate 1996-08-20 (Ricoh by only ~3 months, as § 102(e) art).
• Dependent claims 2, 4, 5, 6 and 9 fall with the independent claims (several are effectively anticipated element-by-element). Claim 3 adds only routine A/D conversion.
• Claim 8 (wristwatch miniaturization) is the strongest claim and the one I would not expect to fall on the current record; it should be evaluated separately, with attention to Daini Seikosha '4,106,283 and to any secondary-consideration evidence bearing on the wristwatch form specifically.
• The sole material gap in every combination is the adjective "infra-red" — and the patent's own specification admits the miniature IR camera chip was a marketed product, which converts that gap from a novelty-saving limitation into a routine substitution of one known component for another.

Sources: US 6,122,521 · US 5,043,736 · US 5,625,668 / full text · US 5,712,899 · US 5,806,005 · US 4,449,248 · Markman/SJ opinion, Triune Star v. Walt Disney, No. 1:07-cv-01256 (C.D. Ill. Nov. 25, 2008)