US 6025780

I'll search for authoritative information on US patent 6025780, including any 2026 CAFC litigation activity.

Let me search more specifically for litigation and docket activity involving this patent.

Let me retrieve the full claim set to accurately identify all independent claims.

Summary — US Patent 6025780

Note on scope: I searched for the exact number 6025780 (USPTO/Google Patents, FreePatentsOnline, uspto.report, RPX, and Federal Circuit materials). No results for similar numbers are included below.

Bibliographic data

Abstract (as published)

An electronic security system uses a set of predefined RFID tags. Each tag is associated with, and attached to, an article or packaging for an article. Each tag includes unique tag information which is logged into a computerized database that contains a record for each of the tags in the set. A detection zone is monitored with an interrogator which detects RFID tags. When an RFID tag is detected, the database records are compared to the tag information and an appropriate database response is output. A deactivation event may be performed on the tag when legitimate access is obtained to the tagged article. The deactivation event may be electronic, physical or virtual. One type of RFID tag used in the system may [be] physically deactivated by altering the state of a circuit element associated with the tag so that the tag cannot return a response signal. Another type of RFID tag used in the system has electronically alterable tag information. The interrogator includes circuitry for detecting the electronic alteration and causing an appropriate response therefrom without requiring any communication with a database of tags.

Plain-language overview of the independent claims

The patent issued with 24 claims. I was able to verify the text of certain independent claims directly; where I could not verify exact wording/numbering I say so explicitly.

Claim 1 — Electronic security system (core "virtual deactivation" claim).
A system made of four parts: (a) a predefined set of passive RFID tags, each attached to an article or its packaging, each having an antenna and an IC storing tag information where no two tags in the set have exactly the same tag information; (b) an interrogator that watches a detection zone and outputs a signal containing the tag information whenever it sees a tag; (c) a computerized database with a record for each tag including that tag information; and (d) a computer with a comparator that compares the interrogated tag information against the database records and outputs an appropriate response. The key limitation: a portion of the database-side tag information is "variable information" that is changed only in the database — without physically or electronically altering the tag or the data stored in its IC — and that database-only change constitutes "virtual deactivation" of the tag.

Claim 8 — Electronic security system (virtual deactivation via article status).
Same general system architecture as claim 1, but the claim requires that each database record further include changeable article status information, and that virtual deactivation be accomplished by changing the article status in the database — again without physically or electronically altering the tag or its stored tag information.

Claim 9 — Method of using a predefined set of passive RFID tags.
A method with steps (a) programming the tags with unique tag information (no two tags identical); (b) establishing a database with a record per tag; (c) monitoring a detection zone with an interrogator that outputs tag information it reads; (d) comparing database records to the read tag information and outputting an appropriate database response; and (e) when legitimate access to the article is obtained, performing a deactivation event by virtually deactivating the tag — i.e., changing at least a portion of the tag information in the database only, without physically or electronically altering the tag or its stored tag information.

Claim 20 — Electronic security system for a plurality of entities (multi-store/multi-entity claim).
A system spanning multiple entities (e.g., stores in a complex): a set of RFID tags each attached to an article; a plurality of interrogators, each monitoring a detection zone belonging to one of the entities and outputting the read tag information; a computerized database holding a record per tag; and a computer with a comparator that receives database records and tag information from the plurality of interrogators, compares them, and outputs an appropriate response. (Dependent claim 21, per search snippets, adds that the database may comprise multiple individual databases, one per entity.)

Claim 22 — Radio frequency identification tag (physically deactivatable/reactivatable tag).
An RFID tag with an antenna and an IC, characterized by at least one circuit element having a physically activated state (tag can return a response signal) and a physically deactivated state (tag cannot). In the version shown, the tag has a resonant circuit (capacitor in series with the antenna as part of the circuit), and the circuit element is a reversible switch across either the capacitor or the antenna; the tag is deactivated by opening the switch. The switch is specified as a field-effect transistor having a charge storage mechanism associated with its gate electrode (an EEPROM-cell-like nonvolatile switch).

Claim 23 — Radio frequency identification tag (second independent tag claim). The search snippets indicate a further independent tag claim ("A radio frequency identification tag comprising: …"), but I could not verify its exact wording; I will not reconstruct it. Claim 24 also appears in the claim set, but its text was truncated in the sources retrieved, so I cannot state it reliably.

Independent-claim count / uncertainty: I can confirm independent claims 1, 8, 9, 20 and 22 from primary text, and claim 23 as an additional independent tag claim. Fragments in the retrieved claim listings suggest the set runs to 24 claims and may include one further independent claim directed to the "third embodiment" (an interrogator that detects the electronically alterable portion of tag information and determines a response without querying a database, as described in the specification's FIG. 17 discussion) — but I could not verify that claim's number or exact language, so I flag it as unconfirmed rather than assert it.

Litigation / CAFC 2026 docket check

• No evidence of any 2026 Court of Appeals for the Federal Circuit docket involving US 6,025,780 was found. Targeted searches ("6025780" CAFC 2026; Checkpoint Systems "6,025,780" Federal Circuit appeal 2026) returned no matching docket, notice of docketing, opinion, or petition. The 2026 Federal Circuit materials returned by search (e.g., Contour IP Holding LLC v. GoPro, Inc., Fed. Cir. No. 2026‑2012; the Enanta/Pfizer rehearing petition) are unrelated to this patent.
• No district-court infringement suit asserting this patent appeared in the searches either. Absent authoritative PACER/Docket Navigator access I cannot rule out an unnoticed or sealed proceeding — treat the "no 2026 CAFC activity" finding as not confirmed exhaustive.
• Consistent with no active litigation, the patent is recorded as Expired – Lifetime (anticipated expiration 1997‑07‑25 + 20 years = 2017‑07‑25).

Sources

• Google Patents, US6025780A: https://patents.google.com/patent/US6025780A/en
• FreePatentsOnline claim text: https://www.freepatentsonline.com/6025780.html
• RPX Insight patent page (independent claim snippets 20/22/23): https://insight.rpxcorp.com/patent/US6025780A
• USPTO.report record: https://uspto.report/patent/grant/6025780
• EP family (EP 1010152) claim listing via patenthub.cn (note: the EP member is renumbered to claims 1–49 and should not be confused with the US claim set)

Uncertainty statement: Bibliographic data, abstract, and the text of US claims 1, 8, 9, 20 and 22 are grounded in the sources above. The exact wording of US claims 10–19, 21, 23 and 24, and the precise number of independent claims, could not be fully verified from the retrieved material and should be confirmed against the USPTO PatentCenter/Patent Public Search claim text before being relied upon.

I'll search patent litigation sources for US 6025780 specifically, being careful to exclude similar numbers.

Let me run more targeted searches on litigation databases.

Litigation search results for US Patent 6,025,780

Bottom line: I found no litigation — no district court case, ITC investigation, PTAB proceeding, or Federal Circuit appeal — in which US 6,025,780 was the asserted or challenged patent.

What I searched

• Google Patents, FreePatentsOnline, Justia Patents, uspto.report, RPX Insight, and EPO/CN/IP5 citation records — for the numeric string 6025780 / 6,025,780.
• Targeted queries pairing the number with the patent's owner and litigants ("6,025,780" Checkpoint Systems lawsuit; Checkpoint Systems "6,025,780" asserted complaint; "6025780" patent litigation).
• Unified Patents litigation portal and RPX litigation-document searches.

Every hit for 6025780 was a citation or bibliographic reference, not a case caption. For example:

• The '780 patent is cited as a prior-art reference in later patents (EP 1708128 A1, EP 1246109 A3, CN 101156186 B) and its family member WO 99/05658 is cited as X-category art against FR 0510130. These are prosecution/validity citations, not litigation.
• The remaining "6025780" hits are unrelated numbers (a Florida corporate document number, a Lithuanian registry notice, an FEI number) and were excluded.

Important distinction — Checkpoint litigation that does not involve '780

Searches for Checkpoint Systems litigation return several well-known cases, but none asserts US 6,025,780. I list them only so they are not mistaken for '780 cases:

Confidence and caveats

• High confidence that no publicly indexed litigation names US 6,025,780. The patent is recorded by the USPTO and Google Patents as Expired – Lifetime (anticipated expiration 2017-07-25), and it carries no litigation docket entries in the sources retrieved — consistent with a patent that was never asserted or challenged in a published proceeding.
• Not exhaustive. I could not complete a full pass over PACER/Docket Navigator or the Unified Patents caselist (my Unified Patents query hit a tool limit before returning results). Sealed, recently filed, or unindexed proceedings cannot be ruled out from the open sources available to me. If you need a definitive answer, the authoritative checks are PACER (civil dockets in E.D. Pa., D.N.J., N.D. Ohio, D. Del., C.D. Cal., E.D. Tex., W.D. Tex., N.D. Ill., and the ITC EDIS) and PTAB Patent Trial & Appeal Board records for IPR/PGR/CBM involving the '780 patent.

Relation to the prior analysis (no contradiction)

This is consistent with the earlier-generated section, which likewise found no 2026 CAFC docket and no district-court assertion of this patent. I did not find any search result that contradicts that finding; the newly surfaced Checkpoint cases all involve different patents ('555, '966, '086, '967) or non-patent claims. One item worth flagging as a nuance rather than a contradiction: the '780 patent's WO 99/05658 family member appears as a validity citation against third-party applications and patents — relevant to prior-art scrutiny of the '780 disclosure, but not evidence of litigation involving '780 itself.

Sources: https://patents.google.com/patent/[US6025780A](/patent/US6025780A)/en · https://insight.rpxcorp.com/litigation_documents/[11033868](/patent/11033868) · https://cases.justia.com/federal/district-courts/ohio/ohndce/5:2011cv01199/[176657](/patent/176657)/53/0.pdf · https://law.justia.com/cases/federal/district-courts/FSupp2/104/427/[2503852](/patent/2503852)/ · https://www.ftc.gov/sites/default/files/documents/cases/1998/04/9510083c.cmp_.htm · https://ai-lab.exparte.com/case/dct/njd/2:24-cv-08409/doc/1

I'll verify the structured-data finding against web sources before writing up.

PTAB / AIA Trial Analysis — US Patent 6,025,780

"RFID tags which are virtually activated and/or deactivated and apparatus and methods of using same in an electronic security system"
Checkpoint Systems, Inc. — filed 1997-07-25, issued 2000-02-15, expired 2017-07-25

Proceedings overview

Total AIA trial proceedings on file: 0. The structured USPTO Open Data Portal (ODP) block states plainly that "the USPTO ODP API returns no AIA trial proceedings for this patent," and every web search I ran returned nothing to contradict it — no IPRs, no PGRs, no CBMs, no derivation proceedings, and consequently no institution decisions, no Final Written Decisions, no terminations, and no Federal Circuit appeals. Of the enumerated status buckets, all are empty: 0 active, 0 claims invalidated, 0 claims sustained, 0 settled, 0 institution denials.

Bottom-line defensive posture: Neither "hardened" nor "hollowed out" — the honest characterization is "never PTAB-tested." No panel has ever construed a claim of the '780 patent, no claim has been canceled, and there is no FWD to hand a judge or an opposing examiner. A defendant gets zero free invalidity findings and zero § 315(e)(2) estoppel cover from prior petitioners (there are no prior petitioners). What the defendant does get is far more valuable than any PTAB record: the patent is expired, which means no injunction, no ongoing royalties, and a damages case cabined to pre-2017-07-25 conduct within 35 U.S.C. § 286's six-year lookback. A demand letter citing this patent is a damages-only, backwards-looking monetization play — not a business-stopping threat. The PTAB is not the right weapon here; the expiration date and § 286 are.

Proceedings on file

None. No proceeding number can be listed because none exists, and I will not manufacture one.

Why the absence is credible rather than a data gap

Three structural reasons make a zero-result here the expected answer, not an indexing failure:

1. Timing. AIA trials became available 2012-09-16. The '780 patent expired 2017-07-25 — a ~4-year 10-month window in which an IPR/PGR was even possible. PGR was closed immediately (the § 321 PGR window is 9 months from grant; grant was 2000-02-15). CBM was theoretically available for a "financial-services" reading of the retail/library claims, but the CBM program sunset 2020-09-16 and was, in any event, never invoked here.
2. No assertion → no petitioner. As established in the earlier-generated Litigation section, the patent was never asserted in a publicly indexed district court case, ITC investigation, or PTAB proceeding. Petitioners file IPRs because they are sued. Nobody was sued on '780.
3. No defensive aggregator. I found no Unified Patents (or comparable aggregator) challenge, which is the typical route for a never-asserted-but-cited patent. (Note: my Unified Patents caselist query was cut off by a tool step-limit before returning results — so treat "no aggregator challenge" as unconfirmed by direct caselist query, though supported by the ODP default and the otherwise-empty search record.)

⚠️ Number-collision trap — do not conflate these with '780

The searches surfaced multiple PTAB filings that say "the '780 patent" while meaning different patents. Anyone researching this docket should screen for these:

The only '780-family appearance in any adversarial-looking document is WO 99/05658 A (Checkpoint Systems, 1999-02-04) cited as X-category prior art against French application FR 0510130 (INPI search report completed 2006-07-13), where it is mapped against that applicant's claims 1, 5–7, 10, 13, 15, 21–23, 26, 27, 29–30. That is a foreign prosecution citation of the family's disclosure — it is not an AIA trial, not a holding, and not evidence of validity or invalidity of US 6,025,780's claims.

Strategic summary

Claim status across the AIA-trial axis: every claim is UNTESTED. No claim of US 6,025,780 has been canceled, confirmed, or even construed by the PTAB — claims 1, 8, 9, 20, 22 and the remaining claims (including the 23/24 text the earlier section flagged as unverified) all stand exactly as issued in 2000, untouched by any AIA proceeding. That is a different statement from "the patent is valid": it simply means the PTAB has never supplied anyone a claim-construction ruling, a prior-art finding, or an invalidity roadmap. Note the interaction with the earlier section's uncertainty: because there is no FWD, there is also no authoritative claim text source from the PTAB side — the exact wording and numbering of claims 23 and 24 (and the total independent-claim count) must still be confirmed against USPTO PatentCenter / Patent Public Search, exactly as previously flagged.

Estoppel landscape — a blank slate, in both directions. There are no petitioners, so no entity is barred by § 315(e)(2) from raising any ground in district court, and no entity benefits from someone else's estoppel. For a defendant currently facing assertion: all § 102 and § 103 grounds are available, subject only to the defendant's own IPR choices. The flip side is that there is no well-developed invalidity record to borrow — you would be building the first challenge from scratch, against a specification that has been in the public domain since 2000 and was itself cited as X-category art against at least one third-party foreign application (a signal the disclosure is broad and art-rich, not that the claims are invalid).

Pattern signals. No repeat petitioner (no petitioner at all). No patent-owner appeal practice at the PTAB — the earlier section found no 2026 CAFC docket involving '780, consistent with there being no FWD to appeal. No aggregator in the chain. The single recurring signal is bibliographic: the '780 patent and its WO 99/05658 family member keep appearing as prior-art citations in later RFID patents and foreign search reports — which means the '780 disclosure is more consequential as prior art against others than as an asserted patent in its own right.

Recommended next steps

If you are a defendant facing a demand: lead with expiration, not invalidity.
There is no FWD to quote and link. Do not imply one exists. The dispositive facts are: (i) the patent is Expired – Lifetime, anticipated expiration 2017-07-25; and (ii) any damages recovery is limited to infringing acts within six years before the complaint (35 U.S.C. § 286) and accruing before expiration — which for a suit filed today reaches acts from roughly 2020-09-29 forward, all of which post-date expiration on the pre-expiration side. Practically, a demand premised on current conduct has no injunctive hook and a heavily truncated damages tail. Verify the recorded legal status and any maintenance-fee/lapse history directly at USPTO PatentCenter before relying on expiration in correspondence.

If you want a PTAB route anyway, expect it to be discretionary-denied. Expired patents remain IPR-eligible, but the Office's post-2025 discretionary-denial framework would weigh hard against institution here. The current analytical checklist expressly includes "[s]ettled expectations of the parties, such as the length of time the claims have been in force" and ability to meet statutory deadlines — the factors litigated in the Director-level denials the searches surfaced, including Dabico Airport Solutions Inc. v. AXA Power Aps, IPR2025-00408, Paper 21 (Acting Dir. Stewart June 18, 2025) and iRhythm Techs., Inc. v. Welch Allyn, Inc., IPR2025-00363, Paper 10 (PTAB June 6, 2025) (Director denying institution where petitioner had been aware of the challenged patent for over a decade). A patent that expired in 2017, with no parallel litigation, is close to a worst-case candidate for institution. If you nonetheless file, remember the one-year § 315(b) bar from service of any complaint — calendar it immediately.

Verify the negative directly (do not rely on my web-search negative alone).

• USPTO PTAB End-to-End (E2E): https://ptab.uspto.gov — search by patent number and by application number 08/900,266.
• USPTO Patent Public Search / PatentCenter for the '780 patent — the "PTAB Proceedings" and "Litigation" tabs should be empty; also pull the authoritative claim text to resolve the earlier section's open items on claims 23–24.
• ODP proceedings endpoint via https://api.uspto.gov for patent US6025780 — this is the canonical source the structured block was drawn from, and it returned zero.
• CourtListener / PACER: confirm no CAFC docket and no district-court assertion, which is the condition precedent for ever having had a petitioner.

Caveat on exhaustiveness (stated per instruction, no fabrication). My sources were the ODP structured block plus targeted web searches keyed to the literal strings 6025780 / 6,025,780 and to Checkpoint Systems. I could not complete a full pass over the Unified Patents caselist (tool step-limit) or over PACER/Docket Navigator. Sealed, protective-order, or unindexed proceedings cannot be ruled out from open sources, and the ODP ingest is described as current only "as of the most recent ingest." If any AIA proceeding exists, it is outside both the ODP record and every public index I could reach — so the overwhelming likelihood is that none exists, but the authoritative confirmation is the E2E search above.

Sources referenced

• Structured "PTAB proceedings on file" block (USPTO ODP) — canonical, returns zero proceedings.
• Google Patents, US6025780A — https://patents.google.com/patent/US6025780A/en (bibliographic, WO 99/05658 family, expiration).
• FR 0510130 INPI search report citing WO 99/05658 A (Checkpoint Systems, 1999-02-04) as X-category art — https://patentimages.storage.googleapis.com/56/e5/87/e29a17464441b7/FR2891639A1.pdf
• Director-level discretionary-denial authorities surfaced in search (governing framework, not '780 proceedings): Dabico Airport Solutions Inc. v. AXA Power Aps, IPR2025-00408, Paper 21 (Acting Dir. Stewart, 2025-06-18); iRhythm Techs., Inc. v. Welch Allyn, Inc., IPR2025-00363, Paper 10 (PTAB, 2025-06-06); "Interim Processes for PTAB Workload Management" memo (2025-03-26).
• Number-collision items (explicitly not US 6,025,780): Fortinet IPR2025-00086 re U.S. 10,601,780; petition re U.S. 9,219,780; Delaware ANDA briefs re U.S. 10,842,780; IPR2014-00304 re U.S. 6,763,573.

Prior-art note carried forward, flagged as nuance not contradiction: the family member WO 99/05658 appears as a validity citation against third-party applications and foreign filings. That bears on how art-rich the '780 disclosure is; it is not evidence of any AIA proceeding against '780 itself.

I'll research the assignment record for US 6025780 across the sources specified.

Let me dig for reel/frame specifics and corporate status.

Good — I found reel/frame data for several Checkpoint portfolio-level recordings. Let me pin down the remaining links.

Inventors

Pattern notes: Both named inventors assigned their rights to the corporate applicant, which is the normal signature of employee-inventors on a company-owned filing (the application itself was filed 1997-07-25 with Checkpoint Systems, Inc. as applicant/assignee). No "inventor departure" pattern can be established from the available record — I found no employment, departure, or non-employee-assignment data for either inventor. The only related timing fact is that the assignment was recorded 1998-01-20, roughly six months after the 1997-07-25 filing date, which is unremarkable and not a fire-sale precursor. I cannot verify either inventor's post-filing employment; treat "departed within 12 months" as unclear/not determinable, not as a negative finding.

Original assignee

Checkpoint Systems, Inc. — a Pennsylvania corporation headquartered at Thorofare, New Jersey. It is the entity named on the face of the issued patent and remains the assignee of record today.

• Primary line of business: electronic article surveillance (EAS) and RFID loss-prevention, shrink-management, and retail labeling ("Check-Net") hardware and consumables — i.e., RFID/EAS tags, labels, readers, deactivators, and detection pedestals. This is exactly the technology class the '780 specification describes.
• Did it ship products embodying the claims? Yes. The '780 disclosure describes Checkpoint's own commercial RFID tag (coil antenna + capacitor resonant circuit + IC), its interrogator/pedestal implementation, and its deactivation equipment. Checkpoint was the largest EAS supplier by store count (~44% share by store / ~35% by revenue, per Imperial Capital's 2016 analysis reported by Security Systems News), so the claimed subject matter was commercialized, not paper-only.
• Current status: Acquired — operating as a CCL Industries subsidiary. Under an Agreement and Plan of Merger dated 2016-03-01 (announced 2016-03-02), CCL Industries Inc. (TSX: CCL.A / CCL.B) acquired Checkpoint for $10.15/share in cash (~$443M equity value; ~$556M transaction value including net cash). CCL Industries USA Corp. (Merger Sub) merged into Checkpoint Systems, Inc., with Checkpoint surviving as a wholly owned subsidiary of CCL (SEC Form 8-K, 2016-03-01; DEFM14A). Not bankrupt, not dissolved, not a shell.
• Consequence for the register: because the merger was structured with Checkpoint as the surviving corporation (a share purchase via reverse/sideways merger, not an asset sale), record title never left Checkpoint Systems, Inc. — which is consistent with there being no recorded assignment after 2013-12-16. Google Patents today still lists "Current Assignee: Checkpoint Systems Inc."

Assignment timeline

Provenance and caveat (read first). The six events below are the recorded conveyances shown in the patent's own legal-events history (Google Patents, sourced from USPTO assignment data). I was not able to open the '780 record directly in the USPTO Assignment Center (no live authenticated query access from this environment), so I state reel/frame only where I could corroborate it from a primary-derived record — here, the INPADOC/USPTO legal-status record of a sibling Checkpoint patent in the same portfolio (US 8,752,406 / App. 15/315,044). Those bank recordings are portfolio-wide instruments filed against a multi-patent schedule, and the '780 legal-events dates match the sibling record's dates and reel/frames exactly, which is strong corroboration that '780 is on the same reel/frame — but I flag it as corroborated inference, not a direct read of the '780 record. Correspondent (attorney/agent) data could not be retrieved for any link; I have left it explicitly blank rather than guess.

1. Executed ~1997 (date not shown) / recorded 1998-01-20 — Reel/Frame not retrieved (Assignment Center record required)

   • Conveyance: Assignment of Assignors' Interest
   • Assignor: Bowers, John H.; Clare, Thomas J.
   • Assignee: Checkpoint Systems, Inc.
   • Correspondent: not retrieved
   • Context: Initial assignment — inventors' rights conveyed to their employer, the corporate applicant.

2. Executed ~2009 (date not shown) / recorded 2009-05-06 — Reel/Frame not retrieved

   • Conveyance: Notice of Grant of Security Interest in Patents
   • Assignor: Checkpoint Systems, Inc.
   • Assignee: Wachovia Bank, National Association, as Administrative Agent
   • Correspondent: not retrieved
   • Context: Securitization — collateral grant to the agent under Checkpoint's credit facility (not a transfer of ownership).

3. Executed ~2010 (date not shown) / recorded 2010-07-22 — Reel/Frame not retrieved

   • Conveyance: Termination of Security Interest in Patents (Release)
   • Assignor: Wells Fargo Bank, National Association, successor-by-merger to Wachovia Bank, N.A., as Administrative Agent
   • Assignee: Checkpoint Systems, Inc.
   • Correspondent: not retrieved
   • Context: Release of the 2009 security interest (consistent with Checkpoint replacing the facility with the 2010 facility referenced in its 2013 8-K).

4. Executed 2012-07-31 / recorded 2012-08-02 — Reel 028714 / Frame 0552 (corroborated via sibling Checkpoint patent legal-status record; portfolio-wide instrument)

   • Conveyance: Security Agreement
   • Assignor: Checkpoint Systems, Inc.
   • Assignee: Wells Fargo Bank, National Association
   • Correspondent: not retrieved
   • Context: Securitization — collateral grant under Checkpoint's then-current credit facility.

5. Executed 2013-12-11 / recorded 2013-12-12 — Reel 031805 / Frame 0001

   • Conveyance: Security Agreement
   • Assignor: Checkpoint Systems, Inc.
   • Assignee: Bank of America, N.A.
   • Correspondent: not retrieved
   • Context: Securitization — collateral grant securing the new $200M five-year senior secured revolving credit facility entered into 2013-12-11 (Checkpoint Form 8-K, 2013-12-12, Item 1.01).

6. Executed 2013-12-09 / recorded 2013-12-16 — Reel 031825 / Frame 0545

   • Conveyance: Release by Secured Party
   • Assignor: Wells Fargo Bank, National Association
   • Assignee: Checkpoint Systems, Inc.
   • Correspondent: not retrieved
   • Context: Release of the 2012 Wells Fargo security interest in connection with the Bank of America refinancing (same 2013 8-K that terminated the 2010 facility and retired the senior secured notes).

No further assignments are recorded. The register shows nothing between 2013-12-16 and the 2017-07-25 anticipated expiration. In particular, there is no recorded assignment to CCL Industries or any CCL entity, and no assignment to any LLC, IP-holding company, or NPE. The 2016 CCL acquisition did not require a patent-recordation because Checkpoint survived the merger as the record owner.

Timeline diagram

timeline
    title Ownership of US 6025780
    1997 : Filed by Checkpoint Systems
    1998 : Inventors assign rights to Checkpoint
    2009 : Wachovia takes security interest
    2010 : Release of Wachovia security interest
    2012 : Wells Fargo takes security interest
    2013 : Bank of America takes security interest
         : Release of Wells Fargo security interest
    2016 : Checkpoint acquired by CCL Industries
    2017 : Patent term expires

NPE / troll-pattern signals

Verdict

Operating-company assertion — with one definitional caveat flagged. Read as: held throughout by its operating-company originator; not an NPE chain. The ownership record is a single unbroken line — inventors → Checkpoint Systems, Inc. (recorded 1998-01-20) — with the only other recorded parties being banks taking and releasing collateral (Wachovia 2009-05-06; Wells Fargo 2012-08-02, reel 028714/0552; Bank of America 2013-12-12, reel 031805/0001; releases 2010-07-22 and 2013-12-16, reel 031825/0545), and no assignment after 2013-12-16. The assignee is a genuine manufacturer whose EAS/RFID tag and pedestal lines embody the claims, and which has litigated other EAS patents against real competitors.

Caveat: the second prong of the "Operating-company assertion" definition — "is suing actual competitors" on this patent — is not met; the prior Litigation section found no suit asserting '780, and the patent is recorded Expired – Lifetime (anticipated expiration 2017-07-25). So the accurate reading of my verdict is operating-company-owned and effectively non-asserting (expired); it is emphatically not NPE — no shell LLC, no known asserter, no cascading LLC transfers, no pre-suit transfer, no bankruptcy sale, no privateering, and no defensive aggregator in the chain. Every NPE/troll signal is absent or (for signal 3, correspondent) simply unmeasured — no affirmative NPE indicator was found.

Verification links:

• USPTO Assignment Center (search "6025780"): https://assignmentcenter.uspto.gov/
• Legacy USPTO Patent Assignment Search: https://assignment.uspto.gov/patent/index.html
• Google Patents legal events for the patent: https://patents.google.com/patent/[US6025780A](/patent/US6025780A)/en
• Corroborating sibling-portfolio legal status (source of reels 028714/0552, 031805/0001, 031825/0545): https://worldwide.espacenet.com/publicationDetails/inpadoc?CC=US&NR=2012144882A1&KC=A1&FT=D
• CCL/Checkpoint merger 8-K (2016-03-01): https://www.sec.gov/Archives/edgar/data/[215419](/patent/215419)/000119312516489094/d130769d8k.htm
• Checkpoint 8-K on the Bank of America facility (2013-12-11): http://getfilings.com/sec-filings/[131216](/patent/131216)/CHECKPOINT-SYSTEMS-INC_8-K/

Remaining data gaps I did not close: (a) the reel/frames and correspondent for the 1998, 2009 and 2010 links, and the correspondent for the 2012/2013 links; (b) the inventors' post-filing employment. Neither gap changes the ownership conclusion.

I'll gather the prior-art citation record for US 6,025,780 from authoritative patent databases.

Let me retrieve the complete cited-reference list (front page) and the foreign/non-patent references.

Let me pull the full front-page reference list and the non-patent/foreign citations.

Prior-Art Analysis — US Patent 6,025,780

Scope confirmation first. A search on the literal string 6025780 returns exactly one U.S. patent: US 6,025,780 (application 08/900,266), Checkpoint Systems, "RFID tags which are virtually activated and/or deactivated and apparatus and methods of using same in an electronic security system," filed/priority 1997‑07‑25, issued 2000‑02‑15, inventors Bowers & Clare. Bibliographic data are as already established in the Summary section and are not repeated here. I excluded false positives sharing digits with these references — e.g., JP Patent No. 5604486 (an ultrasonic-sensor patent for a different subject matter, coincidentally sharing the numeral of US 5,604,486), and a Zenodo DOI ending in 5608379. Neither is a citation to the '780 patent.

1. Two important framing caveats (read before the tables)

(a) "Patent citation" has two directions, and only one can anticipate.

• Backward citations (the "References Cited" face of the '780 patent) are the references the applicant/examiner listed as prior art. These can support § 102 anticipation if they pre-date the 1997‑07‑25 priority date.
• Forward citations (later patents that cite '780) cannot anticipate '780, because they post-date it. I cover them briefly in §5 only because examiners in those later cases used the '780 disclosure as their prior art.

(b) The § 102 claim mapping below is my analytical assessment, not a record of the examiner's rejections. I was not able to retrieve the '780 file-wrapper office actions, so I cannot state which claims the Examiner actually rejected over which reference. Every reference is mapped on the rationale "does this reference disclose the elements of claim X?" — flagged throughout.

All 26 U.S. references on the face of '780 issued before the 1997‑07‑25 filing date; the great majority issue more than one year before it, which makes them § 102(b) art (prior art for both anticipation and obviousness) under pre‑AIA law (the application was filed 1997‑07‑25, so pre‑AIA § 102 governs). Four issue inside the one-year grace window and are therefore § 102(a)/(e) art only.

2. Master list of references cited on the face of US 6,025,780

26 U.S. patent documents, as listed on the freePatentsOnline / EveryPatent record for 6,025,780. Issue dates are as printed; the § 102 column is keyed to the 1997‑07‑25 filing date (one-year cutoff = 1996‑07‑25).

Non-patent literature cited on the face: Bowers, J., "Road To Intelligent Tagging is Paved with Opportunities," Automatic I.D. News, Oct. 1997, pp. 86–87. This is not prior art to '780 — it was published after the 1997‑07‑25 filing date and is by a named inventor (J. Bowers). It is the inventor's own trade-press piece, listed for background; it cannot be used under § 102.

Caveats on completeness: (i) I could confirm no foreign patent documents printed in the "Foreign Patent Documents" block of the '780 face; the ledger ends with U.S. 5,153,842 and proceeds directly to the NPL item. (ii) The face list reflects documents printed on the patent; any examiner-cited art that was not printed would not appear here. (iii) Filing dates for the individual references were not captured for every entry; where § 102(e) precision matters, the filing date of each reference should be confirmed in PatentCenter.

3. Reference-by-reference analysis (grouped by the claim element each reference touches)

Group A — EAS tags that can be deactivated / reactivated (most relevant to independent tag claim 22 and 23)

US 5,608,379 — Narlow et al., "Deactivatable EAS tag," issued 1997‑03‑04.
A deactivatable electronic article surveillance tag/marker. This is the single closest face reference to the '780 patent's physically activated / physically deactivated tag claims (the tag that a switch or element can place in a state that returns a response signal vs. a state that does not — claim 22, and the further independent tag claim 23 flagged as unverified in the Summary).
Potential § 102(a)/(e) art against claim 22: an EAS tag with a deactivatable circuit element reads directly on the "physically activated state / physically deactivated state" concept. The '780 claim 22, however, adds the reversible FET switch with a charge-storage (EEPROM-like) gate structure; Narlow would need to disclose or suggest a reversible electronic switch to anticipate rather than render obvious. (Issue date is inside the one-year window, so this is § 102(a)/(e), not § 102(b).)

US 5,497,140 (Tuttle); 5,448,110 (Tuttle et al.); 5,444,223 (Blama); 5,339,074 (Shindley).
Passive RF tag/transceiver structures. Potential § 102(b) art against the tag-structure limitations of claim 1 (antenna + IC) and background for claim 22. These disclose RF tags generally but, from their titles and known subject matter, not the reversible non-volatile switch element of claim 22.

Group B — Intelligent/IC RFID tags whose stored data is the object of interrogation (claim 1 tag element; claim 9 programming step)

US 5,446,447 — Carney et al., "RF tagging system including RF tags with variable frequency resonant circuits," issued 1995‑08‑29.
US 5,430,441 — Bickley et al., "Transponding tag and method," issued 1995‑07‑04.
US 5,347,263 — Carroll et al., "Electronic identifier apparatus and method utilizing a single chip microcontroller and an antenna coil," issued 1994‑09‑13.

These three are expressly identified in the '780 specification itself as examples of prior "intelligent" security tags "which return unique or semi-unique identification codes … typically include an integrated circuit to generate the identification code." That admission is significant: the '780 applicant conceded that the antenna + IC storing/outputting tag information element of independent claims 1, 9 and 20 was already known.
Potential § 102(b) art against claim 1 (the passive RFID tag element: "an antenna … receiving an interrogation signal and returning a response signal, and an integrated circuit connected to the antenna for storing tag information and for outputting the tag information with the response signal"). These references do not appear to disclose the database + comparator + database-only ("virtual") deactivation limitations, which is where the '780 novelty sits.

US 5,499,017 and 5,214,409 — Beigel, "Multi-memory electronic identification tag," issued 1996‑03‑12 and 1993‑05‑25 respectively.
A tag IC with multiple memories (i.e., re-writable/alterable memory portions).
Potential § 102(b) art against the "at least a portion of the tag information is electronically alterable" concept recited in the '780 specification's "electronic activation/deactivation" embodiment (and, if present in an independent claim, the corresponding claim). Multi-memory/alterable tag memory is the closest face art to electronically altering tag-resident data — but note the '780 patent's inventive claim family is the database-side ("virtual") change, which Beigel does not teach.

US 5,218,343 — Stobbe et al., "Portable field-programmable detection microchip," issued 1993‑06‑08.
Potential § 102(b) art against the "programming each of the tags with unique tag information" step of claim 9 — a field-programmable detection chip anticipates or renders obvious a programmable tag.

Group C — System/interrogator architecture (claims 1, 9, 20)

US 5,604,486 — Lauro et al., "RF tagging system with multiple decoding modalities," issued 1997‑02‑18.
An interrogator/tag system supporting multiple decoding modes. Potential § 102(a)/(e) art against the interrogator limitations of claims 1, 9 and 20 (interrogator that monitors a zone, outputs a signal containing tag information).

US 5,353,011 — Wheeler et al., "Electronic article security system with digital signal processing and increased detection range," issued 1994‑10‑04.
An EAS detection system with signal processing at the receiver/interrogator. Potential § 102(b) art against the interrogator/detection-zone limitations of claims 1 and 9.

US 5,539,394 — Cato et al., "Time division multiplexed batch mode item identification system," issued 1996‑07‑23, and US 5,519,381 — Marsh et al. (British Technology Group), "Detection of multiple articles," issued 1996‑05‑21.
Both concern interrogating many tags/articles in one zone (anti-collision / batch identification). These are the most relevant face references to independent claim 20, which is directed to a system with a plurality of interrogators across entities.
Potential § 102(b)/(a) art against claim 20: Marsh in particular discloses detection of multiple tagged articles in a monitored zone; whether it discloses the plurality of interrogators each belonging to a different entity, all feeding one comparator/database limitation is doubtful. Cato is § 102(a)/(e) art (issued 2 days inside the grace year).

US 5,589,820 — Robinson et al., "Retail theft prevention and information device," issued 1996‑12‑31.
A retail anti-theft device that also conveys article information. Potential § 102(a)/(e) art against claims 1/8/9 to the extent of a retail environment combining article information with theft deterrence. Notably, this reference was cited as X (taken alone) against claims in the WO 2000026880 search report, confirming examiners treat it as strong retail-EAS art.

Group D — Database/article-record and removal-permission concepts (claims 1, 8, 9 — the "database" and "status" elements)

This is the group that comes closest to the '780 patent's conceptual core (a database record per article, with a status that governs whether removal is permitted).

US 5,288,980 — Patel et al., "Library check out/check in system," issued 1994‑02‑22.
A library circulation-checkout system maintaining item records with checked-in/checked-out status.
Potential § 102(b) art against claims 1, 8 and 9 — the '780 specification expressly contemplates a library environment where article status "indicates whether the article is checked in or checked out, and may also indicate whether the article is or is not permitted to be removed." Patel is the closest face art to the "changeable article status information in the database" limitation of claim 8. Distinguishing feature: Patel (barcode-based, per its era) does not disclose an RFID tag whose stored tag information is compared against the database by a comparator, nor the database-only deactivation concept.

US 5,260,690 — Mann et al., "Article removal control system," issued 1993‑11‑09.
Controls whether an article may be removed from a facility. Potential § 102(b) art against claims 1 and 9 for the "detect a tag in a detection zone and determine whether removal is permitted" concept.

US 5,153,842 — Dlugos, Sr. et al., "Integrated circuit package label and/or manifest system," issued 1992‑10‑06.
Labels/manifests carrying item data correlated to a central record. Potential § 102(b) art against the "database containing a record for each of the tags/articles" element of claims 1 and 9.

US 5,450,070 — Massar et al., "Electronic missing file locator system," issued 1995‑09‑12.
Tagged items located via a database of tag identities. Potential § 102(b) art against the database-record-per-tag element.

US 5,432,864 — Lu et al., "Identification card verification system," issued 1995‑07‑11.
Identity verification by comparing presented data against stored data. Potential § 102(b) art against the comparator element of claims 1, 9 and 20 ("a comparator for receiving the database records and the tag information … and comparing … and outputting an appropriate response").

Group E — Access/admission and authentication (claim 9's "access" branch)

US 5,471,203 — Sasaki et al., "Admission managing system," issued 1995‑11‑28. Access control by credential. Potential § 102(b) art against claim 9's alternative "access to the article is permitted" mode and against the specification's zone-restricted-access ("multi-level security state") passages.

US 5,469,363 — Saliga, "Electronic tag with source certification capability," issued 1995‑11‑21. Tag that certifies the source/provenance of an item. Potential § 102(b) art against the unique-tag-information/authentication limitations.

Group F — Background only

US 5,490,079 (Sharpe et al., toll collection/GPS, 1996‑02‑06); US 5,450,492 (Hook et al., transponder variable-frequency transmission, 1995‑09‑12); US 5,214,410 (Verster, location of objects, 1993‑05‑25). These are cited as general RFID/tracking background and, on their titles and known subject matter, do not bear on the '780 claim vocabulary with specificity.

Additional references cited in the specification body (also prior art)

The '780 description also cites, as incorporated-by-reference interrogator circuitry:

• US 3,752,960; US 3,816,708; US 4,223,830; US 4,580,041 — all to Walton. Potential § 102(b) art against the interrogator limitations of claims 1, 9 and 20 (the patent expressly states an interrogator may be "built using circuitry described in" these Walton patents).
• US 5,446,447; 5,430,441; 5,347,263 (already in Group B, as the three "intelligent tag" examples).

4. What the cited art does not disclose — and why it matters for § 102

None of the 26 face references, alone, appears to disclose the limitation that defines the '780 patent's independent claims: changing a portion of the tag information only in the database — without physically or electronically altering the tag or the data stored in its IC — and treating that database-only change as deactivation of the tag. Patel '980 and Mann '690 supply the database/status and removal-permission ideas; Narlow '379 supplies deactivation of a tag; Beigel supplies alterable tag memory; Carney/Bickley/Carroll supply the IC tag. But the "virtual deactivation" concept (database-only change) is the point of novelty that the face art does not show — which is consistent with the claims being allowed and with the NPL/forward-citation record showing later examiners citing '780 itself as X/Y art in other applications.

5. Forward citations (context only — cannot anticipate '780)

Several later documents cite US 6,025,780, and in some of those search reports '780 was treated as highly relevant art:

• EP 1,246,109 A3 (search report) cites US 6,025,780 as [X] — "particularly relevant taken alone."
• EP 1,708,128 A1 cites US 6,025,780 as [Y] (with US 5,751,223 as [X]).
• WO 2006076848 A1 search report cites US 6,025,780 as [A] against claims 1‑10.
• U.S. later patents citing '780 include US 6,927,692 (RF inventory system), US 8,818,885 (self-checkout kiosk), and US 8,917,159 (fully secure item-level tagging); DE 21 2014 000 256 U1 cites it as background.
• The '780 family member WO 99/05658 is cited as X-category art against third-party applications (e.g., FR 0510130).

Again: these are uses of the '780 disclosure as prior art elsewhere, not prior art to '780.

6. Related Checkpoint patents not printed on the '780 face but plausibly relevant prior art

Flagged because they are the closest-in-subject-matter documents I could locate, while noting they are not face citations and I did not verify their full texts:

• US 5,745,036 — Clare, "Electronic article security system for store which uses intelligent security tags and transaction data," Checkpoint Systems, filed 1996‑09‑12 (issued 1998‑04‑28). Clare is a named co-inventor of '780; the filing date precedes '780's 1997‑07‑25 date, so this is a candidate pre-AIA § 102(e) reference (patent by a different inventive entity naming the same assignee). Subject matter — intelligent security tags compared against transaction data — is the nearest conceptual neighbor to '780's tag/database comparison.
• US 5,963,134 — Bowers et al., "Inventory system using articles with RFID tags," Checkpoint Systems, filed 1997‑07‑24 (issued 1999‑10‑05). Filed one day before '780; a candidate § 102(e) reference and a same-assignee/same-inventor-family document (its continuation US 6,195,006 issued 2001‑02‑27).

These should be verified against their full texts before being relied on; I state their filing/issue dates and subject matter as reported in the citation tables of other patents (US 5,604,486 / US 5,608,379 "cited by" records) and I have not independently confirmed each.

7. Bottom line — most relevant prior art for § 102 purposes

None of these references, taken alone, appears to anticipate the independent claims in full, because none discloses the virtual deactivation limitation (database-only change without altering the tag or its stored data) — the feature the '780 patent itself identifies as addressing the need for a deactivatable/reactivatable tag "in a manner which does not require physically or electronically altering the tag itself."

Uncertainty / verification statement

• Verified: the identities and issue dates of the 26 U.S. references in § 2 (from the freePatentsOnline and EveryPatent "References Cited" records for 6,025,780) and the single NPL reference (Bowers, Oct. 1997).
• Inferred, not verified: each "brief description" beyond the printed title, and every § 102 claim mapping — these are my reasoned assessments. Precise § 102(e) analysis requires each reference's filing date, which I did not retrieve for most entries. The examiner's actual rejections require the '780 file-wrapper office actions, which were not available in the sources retrieved.
• Not exhaustive: I could not complete a full PatentCenter/Global Dossier pass within the search budget. Treat the completeness of the face-citation list and the absence of printed foreign references as not confirmed.

Primary sources retrieved: https://www.freepatentsonline.com/6025780.html · http://www.everypatent.com/comp/pat6025780.html · https://patents.google.com/patent/[US6025780A](/patent/US6025780A)/en · http://data.epo.org/gpi/EP1246109A3 · http://data.epo.org/gpi/EP1306821A2-Automatic-electronic-article-surveillance-for-self-checkout.html · https://patentimages.storage.googleapis.com/e6/90/31/c92be3ea556a4c/WO2000021745A1.pdf (search-report citations of US 5,589,820) · https://patents.google.com/patent/US5604486 (forward-citation record showing US 5,745,036 and US 5,963,134 filing/issue data).

I'll ground this analysis in the prior art actually available on this page. Let me verify the content of the references cited in the '780 specification before mapping them to the claims.

Good — I now have grounded content for the tag and reader references. Let me check the '780 front-page references and search for prior art on the database/checkout side.

Obviousness Analysis — US 6,025,780 under 35 U.S.C. § 103

0. Scope note and a flagged inconsistency

What prior art was actually available. The task instructs me to "[u]se the results from the Prior Art section of this page." The page as retrieved does not contain a separate prosecution prior-art section (no Form PTO‑892/PTO‑1449/IDS listing). What it does contain is: (a) a Google Patents machine-generated "Prior art keywords" line — tag, article, tag information, database, tags — and (b) the Background of the Invention, which recites a specific prior-art set. I therefore treat that recited set as "the Prior Art section" and say so explicitly. Flagging the discrepancy rather than silently reconstructing a section I never received.

The verifiable prior-art set on this page:

Limitation I must disclose: my last three targeted searches (retail POS/inventory database art; library circulation/EAS art; EEPROM‑switch art) were cut off by a tool-step limit before returning results. Secondary references below that are not in the table above are identified generically and flagged as unverified; they should be confirmed before being relied on in a validity opinion.

Contradiction check: Nothing here contradicts the previously generated summary or litigation sections. The claim numbering and the "virtual deactivation" characterization of claims 1/8/9 and the multi-entity character of claim 20 carry forward. Claims 23–24 and the hypothesised "third embodiment" claim remain unverified and are analyzed conditionally.

1. Legal framework

Because the application was filed 1997‑07‑25, pre‑AIA § 103(a) governs. The analysis follows Graham v. John Deere Co., 383 U.S. 1 (1966) — scope/content of the prior art, differences from the claims, level of ordinary skill, and secondary considerations — as refined by KSR Int'l Co. v. Teleflex Inc., 550 U.S. 398 (2007). Under KSR, a teaching, suggestion, or motivation need not appear in the references themselves; it may come from the art's recognized problem, "the mere existence of any need or problem known in the field," common sense, or the "finite number of identified, predictable solutions" available to a skilled artisan; and combination of known elements "according to known methods" is not inventive merely because it works better or combines familiar elements.

2. Level of ordinary skill

A person having ordinary skill in the art (POSITA) in July 1997 would have had a bachelor's degree in electrical engineering (or equivalent) plus roughly two to four years' experience with RF identification and/or electronic article surveillance systems, including familiarity with (i) inductively coupled passive transponders and load/resonance modulation, (ii) retail point-of-sale and inventory data processing, and (iii) standard integrated-circuit building blocks such as EEPROM/floating-gate cells. This is a reasoned estimate from the field and the specification's sophistication; it is not taken from a source.

3. Limitation mapping

4. Combinations rendering the claims obvious

4.1 Ground 1 — Claims 1, 8, 9 (the core "virtual deactivation" claims)

Combination: Carney '447 in view of Bickley '441 and/or Carroll '263, further in view of a reader-side code-matching system (Walton '416 / '830 / '041, already incorporated by reference into the '780 specification) and a retail/inventory database system.

• Carney '447 supplies the passive, uniquely-coded RF tag, the interrogator that recovers the identification code, and — critically — the express motivation to substitute RF tags for barcodes in any code-carrying/identification system ("not subject to problems such as dirt obscuring a portion of a printed bar code").
• Carroll '263 supplies the express application of uniquely-identified passive tags to inventory control and theft/security.
• Walton supplies the reader-with-code-memory-and-matching architecture in which the read code is compared against stored records and a device (alarm, door) is operated as a result.
• The database record containing article status, and the practice of changing that status at the point of sale (sold/unsold/checked-out), is the ordinary operation of barcode-based POS and library circulation systems, which by 1997 resolved article status by database lookup keyed to a scanned code rather than by any property of the label. Unverified-named but well-known examples of this category include UPC/POS scanning systems with price/status lookup; confirm with library-automation and POS art before relying on it.

Motivation (KSR rationales, each independently sufficient):

1. Predictable substitution of one known data carrier for another. Barcode POS systems already obtained article status from a database keyed to a machine-read code. Substituting an RF tag (which Carney expressly recommends over barcodes) for the barcode leaves the database/lookup architecture unchanged and yields the expected result.
2. Art-recognized problem: the cost and fragility of tag-side deactivation. The specification itself catalogues the known deactivation techniques and their drawbacks. A skilled artisan seeking a cheaper, more reliable, more auditable "deactivation" for an already database-tracked intelligent tag would naturally place the deactivation flag in the record the system already maintains, rather than requiring a deactivator at every checkout lane.
3. A finite number of predictable solutions. Where deactivation must occur, the artisan's options were: destroy a tag element; shield or detune the tag; alter data in the tag; or alter the corresponding database record. Three of the four were already known. The fourth is the direct counterpart of the third and follows from the same POS-database infrastructure.
4. Known need to re-activate. Prior-art magnetic Q-change deactivation was already reversible and required no physical access. Enabling activation/reactivation by a database write rather than by equipment is a mere change in the locus of a known function, with no change in principle of operation.

Claim 8 adds only "changeable article status information" in the database record — that is precisely what a POS/library circulation record contains (sold/unsold/returned/resold; checked-in/checked-out). Its separate recitation does not add an inventive step over Ground 1.

Claim 9 is Ground 1 in method form; the claim charts add nothing not already performed by the combined system.

4.2 Ground 2 — Claim 20 (multi-entity / plural interrogators)

Combination: Ground 1 + conventional networking of plural readers to a central store/host computer (routine in POS and library automation by the mid-1990s), and the Walton multi-reader identification architecture.

Motivation: Centralized item-master and transaction databases across stores in a chain were standard retail practice; connecting plural interrogators to a host computer is the ordinary way of using a shared record store, so that a record need be maintained once. The system-level advantage of detecting an article that has left the entity that tagged it (rather than re-tagging or re-keying data at every location) follows directly from using unique IDs and a shared record. Dependent claim 21's "plural databases, one per entity" is likewise a predictable architectural choice (distributed vs. centralized records) with no unexpected result.

4.3 Ground 3 — Claims 22 and 23 (the physically activatable/deactivatable tag)

Combination: The admitted EAS deactivation art (reversible magnetizable-element Q-change; irreversible capacitor breakdown) in view of a self-contained RFID tag (Carney '447 / Bickley '441 / Carroll '263 / Carroll '893) and in view of standard nonvolatile switch technology (floating-gate/EEPROM cell; FETs switched into a transponder's resonant circuit as in Walton '416/'041).

Motivation:

1. Express problem in the art. The background states that known RFID tags "are not physically deactivatable," and that physically deactivatable tags have the drawback that they are hard to reactivate. Supplying a reversible physical deactivation to an RFID tag answers a stated need.
2. Nonvolatility is compelled by the physics. A passive tag is powered only while in the interrogation field, so any deactivation state must survive with no applied power. A POSITA would therefore select a floating-gate / charge-storage FET — the standard nonvolatile storage element — for exactly the purpose the claim recites ("maintained whether or not power is applied to the tag"). This is KSR's "known technique… to improve a similar device in the same way."
3. The topology is a finite, predictable set. Series between the resonant circuit and the IC; across the capacitor; in the resonant loop — the specification itself presents these as alternatives and distinguishes them only on a routine engineering metric (induced voltage across the switch). KSR: where "a finite number of identified, predictable solutions" exist, following one is not inventive.
4. Wireless state writing was known. Bickley '441's tag "is programmed through a modulated magnetic field," and Walton '416 concedes that "field change of the code is possible" — so programming a nonvolatile element in a tag from outside the tag was within the artisan's skill.

4.4 Ground 4 — The "electronic deactivation" and "electronically alterable tag information" features

Combination: Carney '447 (tags programmed to their identification codes "immediately prior to" association with goods) + Bickley '441 (tag programmed by modulated magnetic field) + Walton '416's admission of field-change of codes + the interrogator-side decision of the Walton family.

Motivation: If tag identification data is wirelessly programmable at, e.g., a checkout station, then changing that data at the station at the moment of sale is a trivial and predictable use of the same equipment. The claim's "new serial number… not in the database" and the "changeable portion" of the serial number are mere allocations of bits within a code — a design choice with no unexpected effect.

4.5 Ground 5 — The (unverified) third-embodiment interrogator-side claim

If, as the earlier summary hypothesizes, an independent claim is directed to an interrogator that detects the electronically alterable portion of the tag information and determines the response without querying a database (spec. FIG. 17), the same combination applies with greater force: prior-art readers already matched a read code against a stored code set in the reader (Walton '416/'830) and already decoded tag data to trigger an alarm directly. Substituting a status bit for a code list in that reader-side comparison, and thereby eliminating the database step, is an obvious simplification — a claim of the "omission of elements" type, which "may be entitled to patentability" only if the omitted element's function, and the function of the remaining elements, are not correspondingly affected. Nothing in FIG. 17 suggests an affected function; the specification describes it as "simpler." This ground is conditional on the claim actually reading as hypothesized.

5. Weakness in the obviousness case — the one genuinely arguable limitation

The only limitation not squarely met by the cited/admitted art is the conceptual step of treating a database-only change as a "deactivation" that governs whether the exit interrogator alarms. Every cited EAS reference decides at the tag: alarm if the tag responds (and, in the "intelligent" systems, if the decoded code is on a list); the art's default assumption is that deactivation is a change to the tag. The applicant can argue that the prior art's alarm logic is "tag speaks ⇒ alarm," and that inverting that logic so that the system must consult a record to suppress an alarm — with the record, not the tag, as the deactivation locus — is a non-analogous change in system architecture.

My assessment: that argument does not survive KSR. Once the interrogator outputs a unique identification code (Carney, Bickley, Carroll), and once the reader is already comparing that code to a stored record set before deciding whether to act (Walton), the marginal step of adding a status field to the record the system already consults is a predictable variation, not a leap. The applicant's own background concedes the desirability of "database[s] which interact with interrogators… to identify and track the status of individually tagged articles." The technical difficulty is essentially nil; the change is one of data-modeling, executed entirely in software — which the '780 specification itself emphasizes as the point ("the virtual deactivation scheme may thus be executed entirely in software").

6. Secondary considerations (Graham prong 4)

• Long-felt need: supported by the specification's own catalogue of shortcomings of prior deactivation techniques, but a "desirable to have" statement in the application is not strong secondary evidence; the need must be shown to have persisted unsatisfied in the art.
• Unexpected results: none apparent. The asserted benefits (fewer false alarms because "environmental resonances and RF devices… cannot generate the sequences needed to create a bona fide serial number"; ability to embed tags permanently) are ordinary and predictable consequences of using unique digital IDs plus a record lookup — not results that would be "unexpected to one of ordinary skill."
• Teaching away: weak. The prior art's preference for tag-side deactivation is a preference, not an express teaching that database-side deactivation cannot work; three prior-art techniques (shielding, magnetizable Q-change) already deactivate without destroying the tag, and two are reversible, which undercuts any "the art required irreversible tag modification" argument.
• Commercial success / nexus: the '780 patent issued to Checkpoint Systems and reads on its commercial RFID/EAS lines, but no evidence of sales, copying, licensing, or industry praise tied to the claimed feature was found on this page; as noted in the earlier litigation section, no litigation asserting this patent was located, so there is no adjudicated record of commercial success or of validity to cite.
• Licensing/industry acquiescence: none located. The family members (EP 1010152 B1; CN 1133965 C; JP 4100867 B2; etc.) show the applicant pursued the subject matter broadly, not that the art regarded it as non-obvious.

7. Conclusion

Under pre-AIA § 103(a) and KSR, claims 1, 8, 9, 20, 21, 22 and the electronic-deactivation claims of US 6,025,780 appear obvious over Carney '447, Bickley '441 and Carroll '263 (passive uniquely-coded RFID tags + readers), in further view of the Walton patents already incorporated by reference into the specification ('960 / '830 / '041, and '416 as consistent art), the admitted EAS deactivation techniques (dielectric capacitor breakdown; magnetizable-element Q-change; shielding), standard nonvolatile floating-gate/EEPROM cell design, and conventional networked POS/inventory database processing. The strongest single ground is a two-reference combination for the virtual-deactivation core: Carney '447 (RF tags bear unique codes and are superior to barcodes) + Walton '830/'416 (reader matches a read code against stored records and operates an alarm accordingly), with the POS/library database record supplying the article status — because the motivation to combine is supplied expressly by the references themselves rather than by the inventor's own problem statement, and because the remaining features are predictable mechanical (claim 22) and software (claims 1/8/9) variations on known elements. The "virtual deactivation" limitation is the sole genuinely arguable point, and it is a data-model change with no technical difficulty; an examiner or challenger relying on KSR's "predictable variation" and "finite number of solutions" rationales should expect to prevail, subject to whatever secondary-considerations evidence Checkpoint might marshal.

Confidence: Moderate-to-high for Grounds 1–4, because every element is grounded in either the references cited in the patent's own text (whose content I verified for the tag and Walton references) or in the specification's admitted prior art. Lower for the exact identity of a specific named POS/library-database reference (my searches in those two categories were cut off by a tool limit) and for the hypothesized third-embodiment claim (unverified). The proper next steps are: (i) confirm the § 0 prior-art set against the actual PTO‑892/IDS in the file wrapper; (ii) retrieve the 19 front-page "References Cited" patents for the '780 (visible in the Google Patents listing but not returned in my fetches) — these are the most likely source of a directly-on-point retail-database or tag-switch reference; and (iii) verify the text of US claims 10–19, 21, 23 and 24 before any claim-by-claim opinion is relied upon.