US 6581042B2

I'll verify the patent identifiers and check for any litigation/docket records before summarizing.

Now let me check for litigation history and to retrieve the actual claim text, since the provided full text was truncated before the claims section.

Let me try to retrieve the actual independent claim language directly.

Verification status

I was able to confirm the record for US 6,581,042 B2 ("6581042B2") across multiple independent sources (Google Patents, FreePatentsOnline, SumoBrain, uspto.report, and patent-family annexes in later PCT publications). However, I must flag two important limits up front:

1. The authoritative full text supplied to me was truncated before the claims section (it ends mid-sentence in the "Use-Sensitive DPC Configuration" discussion). I therefore do not have authoritative claim 1 / claim 23 / claim 38 text in hand. I retrieved only fragmentary claim text (claims 26–37) via search, and I identify below exactly what is confirmed versus inferred.
2. No 2026 CAFC docket activity for this patent was found. I state my confidence level on litigation below rather than guessing.

Warning on identifier collisions: a search for "6581042B2" also returns JP 6581042 B2, a Japanese pachinko/gaming-machine patent ("遊技機"), which is a completely different document with a different authority. I have not merged these. Likewise, the September 2026 Apple/Taction $5.7B verdict that surfaced in search is about U.S. Pat. Nos. 10,659,885 and 10,820,117 and is unrelated to this patent.

Bibliographic data (as listed)

Priority chain (continuation lineage, per the RELATED APPLICATION DATA section):

• US 08/345,523 (filed 1994-11-28) → US 5,615,277
• CIP → US 08/442,895 (1995-05-17) → US 5,613,012
• CIP → US 08/705,399 (1996-08-29) → US 5,870,723
• Continuation → 09/239,595 (1999-01-29) → US 6,230,148
• Continuation → 09/848,867 → US 6,581,042 (this patent)

A parallel family member surfaced in search shows the priority date as 1994-11-27 (Unified Patents listing), whereas Google Patents and the specification state 1994-11-28. I have not auto-corrected either date; treat 1994-11-28 as the figure stated in the authoritative patent text.

Assignment history of note (from the Google Patents legal-events record): Indivos Corp → Excel Innovations, Inc. (2003) → Aviv, LLC (2003) → back to Excel Innovations (2003) → Indivos (2005, via judgment of patent ownership; Indivos described as a wholly owned subsidiary of Solidus Networks, Inc., d/b/a Pay By Touch) → YT Acquisition Corp (2008 asset sale) → Your Technology, Inc. → Open Invention Network, LLC (2010-10-13).

Abstract

"A tokenless authorization of an electronic check between a payor and a payee using an electronic identicator and at least one payor bid biometric sample is described. The method comprises a payor registration step, wherein the payor registers with an electronic third party identicator at least one registration biometric sample, and at least one payor checking account data. An electronic financial transaction is formed between the payor and the payee, comprising at least one payor bid biometric sample… Preferably in one transmission step the payor bid biometric sample is electronically forwarded to the electronic identicator. A comparator engine or the identification module of the electronic identicator compares the bid biometric sample with at least one registered biometric sample for producing either a successful or failed identification of the payor. Once the electronic identicator successfully identifies the payor, the payor's previously registered checking account data is retrieved, and a biometric-based authorization of an electronic check is authorized without the payor presenting any personalized man-made tokens such as paper checks or magnetic swipe cards."

Independent claims — plain-language overview

Explicit uncertainty: I do not have verbatim independent-claim text from an authoritative source. The following is grounded in (a) the abstract, (b) the SUMMARY OF THE INVENTION — which in this family's drafting convention closely tracks the independent method claim — and (c) fragments of dependent claims 26–37 that I did retrieve. Any wording I give is a paraphrase, not the claim language.

Confirmed structural facts about the claim set:

• There is an independent claim 23, directed to an "authorization device" (apparatus). This is confirmed by the retrieved dependent claims 26–37, each of which recites "The authorization device of claim 23…".
• The claims set therefore contains at least 37 claims, and there is at least one earlier independent claim (very likely claim 1, a method claim) plus a later independent claim (likely claim 38 or beyond, possibly a system/computer-readable-medium claim). I could not confirm the total claim count or the existence/scope of a claim 38.

Claim 1 (method) — inferred scope, closely paralleling the abstract and the SUMMARY:
A method for tokenless authorization of an electronic check between a payor and a payee using an electronic identicator, comprising:

• a payor registration step — the payor registers at least one registration biometric sample and at least one payor checking account with the identicator;
• a transaction formation step — forming an electronic financial transaction between payor and payee that includes at least one payor bid biometric sample obtained from the payor's person (and optionally a transaction amount);
• a transmission step — the bid biometric sample is electronically forwarded to the identicator;
• an identification step — a comparator engine / identification module compares the bid sample against registered samples to produce a successful or failed identification of the payor;
• an authorization/payment step — upon successful identification, previously registered checking account data is retrieved and a biometric-based electronic-check authorization is issued, without the payor presenting any personalized man-made token (paper check, magnetic swipe card, etc.), with funds debited from the payor's checking account and credited to a payee financial account.

Claim 23 (authorization device) — inferred scope:
An apparatus/system for tokenless electronic-check authorization comprising a biometric sensor for gathering a payor bid biometric sample, a data processing/identification arrangement including a comparator engine that matches the bid sample to registered samples, and an execution module that performs/authorizes the electronic-check funds transfer without any personalized token. The retrieved dependents confirm the following limitations attach to claim 23 (i.e., are not in the independent claim, which is a claim-differentiation signal):

• Claim 26: an account selector module presenting registered checking account(s) to the payor for selection after successful identification.
• Claim 27: the execution module debits the transaction amount from the payor's checking account.
• Claim 28: the execution module credits the payee's financial account.
• Claim 29: a registered private code, distinct from a PIN and not used to identify the payor, displayed to validate that the authentic authorization device processed the transaction.
• Claim 30: a re-registration database compared against registration samples to alert the system to re-registration.
• Claims 31–33: a display means (point-of-sale terminal, or party identification apparatus).
• Claims 34–36: the execution module is not co-located with the identicator, may be third-party operated and communicate via communication lines, and may consist of communicating with a financial transaction processor.
• Claim 37: the electronic identicator is operated by a third party.

Practical reading: the independent claims are deliberately broad — identify a person by biometric alone, retrieve a pre-registered checking account, and settle via ACH — while the narrowing features (account selection UI, private-code authentication-to-the-user, distributed/third-party execution, re-registration detection) are pushed into dependents.

Litigation / CAFC docket check

• No 2026 CAFC docket or Federal Circuit appeal specifically involving US 6,581,042 was identified in my searches. I cannot state authoritatively that none exists — only that I did not find one. This is consistent with the patent having expired on 2015-01-13 for failure to pay maintenance fees ("Expired – Fee Related"), which makes new CAFC infringement appeals involving it improbable.
• Confirmed historical litigation footprint (not a 2026 docket): Google Patents carries a "Family has litigation" flag linking to a Darts-ip family record (family 22902856). Separately, a 2004 report in Card Technology Today / ScienceDirect states that San Francisco federal district court ruled in favor of Solidus Networks (Pay By Touch) and its subsidiary Indivos Corporation, which successfully fought off a challenge to 15 of its patents covering "the application of biometrics to tokenless transactions." I could not verify the specific case number, the patents asserted, or whether '042 was among them; treat this as directional, not authoritative.
• Notable distinction: the 2026 media cluster about a $5.7B Apple verdict concerns Taction Technology's patents 10,659,885 / 10,820,117 — unrelated to this patent number.

Confirmed forward citations (evidence the patent is cited as prior art)

US 6,581,042 is cited in the specification of later applications, e.g.:

• U.S. Pat. Nos. 10,475,032 and 11,068,894 (tokenless biometric payment authentication using iris images) — both list "6,581,042 B2 6/2003 Pare, Jr. et al." in their references.
• U.S. Pat. No. 10,664,834 / U.S. Pat. No. 7,349,557 (Electronic transaction verification system) describe "U.S. Pat. No. 6,581,042 to Pare, et al. that uses biometrics obtained at the point-of-sale for verifying the identity of an individual as an authorized user of the tokenless payment system."

What I would need to finalize

To give you verbatim independent claims and the exact claim count, I would need the full printed claim set for US 6,581,042 B2 (USPTO Patent Public Search / PatentCenter, or the granted-PDF "Claims" section). The text I was given stops in the Detailed Description, so any claim quotation from me would be reconstruction rather than quotation, and I have deliberately labeled it as such rather than presenting it as authoritative.

I'll research litigation involving US 6581042B2 specifically.

Let me search more specifically for litigation records.

Good — finding leads. Let me dig deeper on each.

Summary of findings

I searched for litigation specifically involving US 6,581,042 B2 ("Tokenless biometric electronic check transactions," Indivos Corp., filed 2001-05-03, issued 2003-06-17, priority 1994-11-28). Note the procedural caveat up front: my searches were through open web search, not a direct PACER or Docket Navigator query, so case numbers beyond those below could exist that I could not surface. I did not auto-correct any patent numbers, and I excluded results for other patents (e.g., US 8,762,658, US 10,562,680, US 6,728,397) that appeared in the same search results.

I found two matters clearly tied to the '042 patent and one related matter that likely did not involve it.

1. BioPay, LLC v. Solidus Networks, Inc. d/b/a Pay By Touch, and Indivos Corporation

Supporting sources:

• Finextra press report: https://www.finextra.com/pressarticle/3137 (BioPay announced the suit on January 25, 2005, filed January 18, 2005, D. Del., against Solidus Networks d/b/a Pay By Touch and Indivos Corporation).
• The court's "Report on the Filing or Determination of an Action Regarding a Patent" (35 U.S.C. § 290) for CA 05-0025, listing "1 6,581,042 B2 06/17/03 Indivos Corporation" and "2 6,728,397 B2 04/27/04," patent holder Indivos Corporation: https://www.findforms.com/single_form.php/form/33398/Patent_Trademark_Report_to_Commissioner_District_Court_of_Delaware_District_Court_of_Delaware_Delaware
• Stipulation of voluntary dismissal: https://www.findforms.com/single_form.php/form/33399/Stipulation_of_Dismissal_District_Court_of_Delaware_District_Court_of_Delaware_Delaware

Context worth noting for the "outcome" question: the dismissal (Feb. 2006) coincided with the merger of BioPay and Pay By Touch, so the case appears to have ended as a corporate-combination consequence rather than on the merits.

2. Excel Innovations, Inc. litigation (ownership dispute) — Pay By Touch / Indivos

Source: Digital Transactions, "Pay By Touch Scores a Sweeping Victory in a Patent Suit": https://www.digitaltransactions.net/pay-by-touch-scores-a-sweeping-victory-in-a-patent-suit/

Caveat — read this as a probability, not a certainty: I could not confirm from the sources I retrieved that US 6,581,042 was among the 15 patents at issue. It is plausible, because the Google Patents reassignment record shows "2003-03-14 Assigned to EXCEL INNOVATIONS, INC. … Assignors: INDIVOS CORPORATION" for this patent family, and Excel Innovations was subsequently involved in the "annulment of assignment" / judgment-of-patent-ownership chain that returned rights to Indivos. I am flagging this case as associated with the '042 patent family and its title chain, but I will not assert that the '042 patent was one of the 15 asserted patents without a docket.

3. Indivos Corp. v. Biometric Access Corp. — likely NOT involving the '042 patent

• Citation: 45 F. App'x 918 (Fed. Cir.), appeal filed August 15, 2002; dismissed by agreement under Fed. R. App. P. 42(b).
• Source: https://www.cetient.com/case/indivos-corp-v-biometric-access-corp-[7293971](/patent/7293971)
• Why it probably did not involve the '042 patent: the '042 patent issued June 17, 2003, which is after this case was filed and after the Federal Circuit appeal. The 2002 case would therefore have involved earlier Pare/Hoffman/Lee patents (e.g., US 5,870,723; US 5,613,012; US 5,615,277; US 6,014,039; US 6,192,142), not the '042. I list it only to exclude it, per your instruction not to return results for similar or neighboring patents.

4. The Google Patents "litigation" flag

The patent's Google Patents page carries the banner "Family has litigation — First worldwide family litigation filed" with a Darts-IP link to family 22902856. This is an automated family-level litigation tag; I could not open the underlying Darts-IP record to extract the case list, so I cannot add cases from it. It is consistent with (and probably reflects) the BioPay and/or Excel Innovations matters above.

What I could not verify (stated explicitly rather than guessed)

• I could not query the Unified Patents litigation portal (https://portal.unifiedpatents.com/litigation/caselist) or PACER directly; my results come from open-web sources. A full docket search on PACER/RECAP for "6,581,042" and for the parties Indivos Corporation, Solidus Networks, Excel Innovations, Aviv LLC, YT Acquisition Corporation, Your Technology Inc., and Open Invention Network would be the authoritative follow-up.
• I found no IPR, PGR, or reexamination proceeding directed at 6,581,042 B2. Do not treat that as a negative finding; it is simply what I could not surface.
• I found no litigation asserting 6,581,042 B2 by Open Invention Network LLC (the current listed assignee). OIN is generally a defensive patent pool and is not known to file infringement actions.
• The '042 patent is recorded as Expired – Fee Related, adjusted expiration 2015-01-13, so no new infringement actions on this patent are possible going forward.

Bottom line

The only litigation I can tie to US 6,581,042 B2 with a confirmed docket number is BioPay, LLC v. Solidus Networks, Inc. d/b/a Pay By Touch and Indivos Corporation, C.A. No. 1:05-cv-00025-SLR (D. Del., filed Jan. 18, 2005), a declaratory judgment action of invalidity and non-infringement that was voluntarily dismissed without prejudice on Feb. 2, 2006. A second ownership-related case brought by Excel Innovations, Inc. against Pay By Touch ended in summary judgment for Pay By Touch in the N.D. Cal. on ownership of 15 patents, but I could not confirm the case number or that the '042 patent was among those 15.

I'll start by checking the structured data and then verify against public sources.

Proceedings overview

Total AIA trial proceedings on file for US6581042B2: 0 — status breakdown: 0 active, 0 with claims invalidated, 0 with claims sustained, 0 settled, 0 institution denials. The canonical structured record in this prompt (USPTO Open Data Portal) returns no IPR, PGR, or CBM proceeding for this patent, and my own web searches surfaced no PTAB proceeding number tied to US6581042B2 (or to its owners Indivos Corp., Excel Innovations, Your Technology, or Open Invention Network). The bottom line for a defendant: no PTAB panel has ever construed, canceled, or sustained a single claim of this patent — unlike a "hardened by two IPRs" patent, 6581042B2 is simply untested at the Board, which cuts both ways (no estoppel shields you, but also no free invalidity win), and the far more consequential fact in the structured record is that the patent expired for failure to pay maintenance fees, effective 2015-01-13.

Proceeding inventory

No AIA trial proceedings on file

• Canonical source: The "PTAB proceedings on file" block (USPTO ODP ingest) states verbatim that the ODP API returns no AIA trial proceedings for this patent as of the most recent ingest. No proceeding numbers are supplied, and I will not construct any.
• Web-search corroboration: Searches for 6581042 + IPR / CBM / Indivos / Solidus Networks / Pay By Touch returned no PTAB docket, no institution decision, no Final Written Decision, and no Federal Circuit appeal arising from a Board trial. The only hits were district-court and press items (below).
• Confidence: Moderate-to-high that no IPR/PGR/CBM was ever instituted; lower confidence that nothing was ever filed and denied in the 2012–2015 CBM window, because ODP ingest is known to be uneven for older Board proceedings and because this patent's relevant commercial life (and CBM eligibility as a "financial services" patent under § 18 of the AIA) ended well before the CBM program sunset on 2018-09-16. Treat "zero proceedings" as the operative working assumption but verify against PTAB E2E directly (see next steps).

Non-PTAB context (not AIA trials — do not cite as PTAB outcomes)

These are district-court/ownership matters surfaced in public sources. They are not PTAB proceedings and produced no claim-level invalidity holdings. I am reporting them only because they explain why the patent never attracted an IPR petitioner with standing.

• BioPay, LLC v. Solidus Networks, Inc. d/b/a Pay By Touch and Indivos Corporation — U.S. District Court for the District of Delaware. Declaratory-judgment action filed 2005-01-18 (announced 2005-01-25) seeking a declaration that Pay By Touch's biometric patents are invalid and not infringed by BioPay. Source: https://www.finextra.com/pressarticle/3137. I found no public disposition for this docket; do not assume an invalidity ruling.
• Excel Innovations, Inc. v. Pay By Touch / Solidus Networks — U.S. District Court for the Northern District of California (Judge Maxine Chesney). Reported summary judgment in Pay By Touch's favor on patent ownership of the 15 patents at issue (ownership, not validity). Source: https://www.digitaltransactions.net/pay-by-touch-scores-a-sweeping-victory-in-a-patent-suit/ and https://www.sciencedirect.com/science/article/abs/pii/S0969476504001560. Reported 2004; treat the exact date as unverified.
• Chain of title (from the structured record): Indivos Corp. → Excel Innovations → AVIV, LLC → back to Indivos → YT Acquisition Corp. → Your Technology, Inc. → Open Invention Network, LLC (assignment recorded 2010-10-13). Reassignment entries include a "JUDGMENT OF PATENT OWNERSHIP" (2006-01-05), collateral-agent security interests, and releases in 2010.
• Patent family: Continuation chain from US5615277 (filed 1994-11-28) → US5613012 → US5870723 → US6230148 → this patent (application 09/848,867, filed 2001-05-03, granted 2003-06-17). Siblings cited in the family include US6192142, US6269348, US6366682, US6397198, US6594376, US6662166, US6920435 and US6950810. Family record: https://patents.google.com/patent/[US6581042](/patent/US6581042)/en

Strategic summary

Claim status: everything is UNTESTED. No claim of US6581042B2 has been canceled, confirmed, or even instituted-for-review by the PTAB. So there is no "claims 1–5 are dead" argument available, and equally no FWD to quote. Any invalidity attack today would have to be built in district court under 35 U.S.C. § 282 (or a DJ action), on the full claim set, with the statutory presumption of validity intact. The one genuinely powerful fact in the structured record is the legal status: "Expired - Fee Related, expires 2015-01-13" — i.e., the patent term ended for non-payment of maintenance fees, which caps any realistic recovery at pre-2015 past damages, eliminates prospective injunctive relief, and (if an IPR were somehow still filed) would bar the patent owner from amending claims to survive.

Estoppel: nothing attaches. Because no IPR/PGR was instituted, 35 U.S.C. § 315(e)(2) estoppel binds no one — there is no petitioner or privy carrying a "raised or reasonably could have raised" bar. Conversely, there is no petitioner-side FWD finding you can borrow. IPR2023-00833 (Apple v. FaceToFace Biometrics) surfaced in my search but concerns U.S. 11,042,623 — a different patent, different owner, and irrelevant here; do not conflate it with this docket.

Pattern signals: the absence of PTAB activity is explained, not mysterious. This is a 1994-priority patent that was already expired before the CBM program wound down and long before the modern IPR-filing wave; it is now held by Open Invention Network (recorded 2010-10-13), a defensive-aggregator entity whose model is cross-licensing rather than assertion. A patent held by a defensive aggregator, expired since 2015, with no litigation since the mid-2000s, is a low-probability target for both NPE suits and IPR filings. That is consistent with — and reinforces — the "zero proceedings" finding. There is also no sign of a repeat petitioner or an aggressive patent-owner PTAB appeal strategy on this number.

Recommended next steps

1. Verify "zero" directly, don't just inherit it. Query PTAB E2E and the ODP "AIA trial proceedings" endpoint by patent number (6581042) and by the party names above (Indivos, Excel Innovations, YV/Your Technology, Open Invention Network) before relying on the absence. Entry points: https://patents.google.com/patent/US6581042/en (family/litigation tab) and the PTAB public portal at https://ptacts.uspto.gov/. The residual risk is an old CBM/derivation filing that ODP never ingested — a low but non-zero probability.
2. Confirm the expiry and its consequences in USPTO PatentCenter (maintenance-fee status, "Expired - Fee Related, expires 2015-01-13"). If a demand letter cites this patent: the assertion survives only for past damages, and a petition to the PTAB would be an unusual vehicle — the practical defenses are § 282 invalidity, § 112/§ 101 on the 1994-era specification, laches/§ 286 damages limits, and standing/ownership inquiries given the four recorded assignments and the 2006 "judgment of patent ownership."
3. If no PTAB activity is confirmed — say so in your papers, plainly. There is no FWD to link and no canceled claim to quote; do not characterize this patent as "invalidated," "hardened," or "survived IPRs." The accurate statement is: no AIA trial proceeding has ever been instituted against US6581042B2; the patent expired on 2015-01-13 for non-payment of maintenance fees; and it is held by a defensive aggregator (Open Invention Network).
4. If a live assertion is nonetheless threatened, ask the asserting party for (a) the record chain of title into its hands, and (b) any pre-expiration damages theory with dated evidence — the 2015 expiration and the 2010 OIN assignment are the two facts most likely to collapse the demand.

I'll research this patent's assignment chain before writing up.

Let me dig into the litigation and the Open Invention Network acquisition.

Let me verify the OIN transfer and find litigation history.

Assignment Record Reconstruction — US 6,581,042 B2

Data-integrity note up front. The recorded-assignment entries below are anchored to the Google Patents legal-events record (https://patents.google.com/patent/[US6581042B2](/patent/US6581042B2)/en#legal-events) and to court opinions that independently corroborate the underlying transactions. Two fields the brief asks for were not retrievable in this session and are marked as such rather than guessed:

• Reel/frame numbers — not exposed by Google Patents legal events, and I could not open USPTO Assignment Center (https://assignmentcenter.uspto.gov/ / https://assignment.uspto.gov/patent/index.html) to pull them. Treat every reel/frame below as unverified. Search the Assignment Center by patent number 6581042 to obtain them.
• Correspondent of record (recording attorney/agent) — likewise not exposed by any source I could reach. No correspondent is asserted anywhere in this report. This materially weakens signal #3 (repeat correspondent), which is flagged accordingly.
• Execution dates — the legal-events record gives recording dates only. Where an execution date is implied by a court opinion, I say so and label it as such.

Inventors

Unusual patterns. This is not the "all inventors leave within 12 months" pattern that precedes a fire-sale. It is a rougher variant: an inventor later contested ownership of the patent against his own assignee. Ned Hoffman became controlling shareholder, president and CEO of Excel Innovations, Inc., which filed a patent-infringement action against Indivos in N.D. Cal.; in late May 2004 Judge Chesney granted partial summary judgment for Indivos, ruling that all of the patents Excel accused Indivos of infringing were actually owned by Indivos. The arbitrator found Hoffman liable for breach of contract and found Excel liable as Hoffman's alter ego for certain suits. Per the same BAP opinion, Excel Innovations filed Chapter 11 on 2004-06-17 (still unconfirmed as of the 2012 BAP opinion). Hoffman filed Chapter 13 the same day; dismissed September 2004; he resigned as an Excel officer/director in December 2004. Roughly 17 suits were filed in the course of this feud, 14 resolved against Hoffman.

Original assignee

Indivos Corporation (San Francisco, CA; later a Delaware corporation), named as original assignee on the face of US 6,581,042.

• Line of business: tokenless biometric payment — network of Party Identification Apparatuses (PIAs), a Data Processing Center, and ACH origination of "electronic checks." The specification is Indivos' own commercial architecture, and claims are directed to the check/ACH rail specifically.
• Did they ship a product embodying the claims? Yes, via its successor. Indivos merged into Solidus Networks, Inc. in 2003 and Indivos survived as a wholly owned Solidus subsidiary; the combined company traded as Pay By Touch and deployed fingerprint-based payment at 700+ U.S. retail locations, most visibly SuperValu's Jewel-Osco in Chicago (SecureIDNews, 2008-02-25).
• Current status: dissolved as an operating concern. Solidus Networks d/b/a Pay By Touch — involuntary Chapter 11 filed 2007-10-31, consented 2007-12-14; Indivos Corporation is expressly listed among the debtor subsidiaries (BAP footnote 3). Biometric operations shut down 2008-03-19. Core assets sold to a lender consortium. Nothing operating remains; the corporate name survives only in the assignment record.

Assignment timeline

Recording dates from Google Patents legal events. Execution dates and reel/frame not verified (see note above).

• 2003-03-14 (recorded) — Reel unverified

  • Conveyance: Assignment of interest
  • Assignor: Indivos Corporation
  • Assignee: Excel Innovations, Inc.
  • Correspondent: not available from source
  • Context: Ownership transfer to the entity controlled by inventor Ned Hoffman, executed during the Indivos–Solidus merger fight — context is contested ownership, not monetization.

• 2003-03-26 (recorded) — Reel unverified

  • Conveyance: Assignment of interest
  • Assignor: Excel Innovations, Inc.
  • Assignee: Aviv, LLC
  • Correspondent: not available from source
  • Context: Onward transfer into an intermediate LLC; this is the only LLC-to-LLC-style hop in the chain and is the sole genuine shell-entity tell — 12 days after Excel took title.

• 2003-08-11 (recorded) — Reel unverified

  • Conveyance: Merger
  • Assignor: Indivos Corporation
  • Assignee: Indivos Corporation
  • Correspondent: not available from source
  • Context: Internal reorganization — corporate merger recordation tied to the Indivos/Solidus combination concluded in 2003.

• 2003-09-03 (recorded) — Reel unverified

  • Conveyance: Assignment of interest
  • Assignor: Indivos Corporation
  • Assignee: Excel Innovations, Inc.
  • Correspondent: not available from source
  • Context: Second Indivos→Excel transfer in six months; same contested-ownership fight.

• 2003-09-16 (recorded) — Reel unverified

  • Conveyance: Annulment of assignment
  • Assignor: Indivos Corporation, a Delaware corporation
  • Assignee: Indivos Corporation, a Delaware corporation
  • Correspondent: not available from source
  • Context: Correction/annulment — the recorded record itself unwinds a prior conveyance. A self-annulment of this kind is unusual and is consistent with the litigation described above rather than with a planned transfer chain.

• 2003-11-26 (recorded, three separate entries) — Reel unverified

  • Conveyance: Assignment of interest
  • Assignor: Aviv, LLC
  • Assignee: Excel Innovations, Inc.
  • Correspondent: not available from source
  • Context: Round-trip return — the Aviv, LLC hop reversed, ~8 months after it began. Net effect of the 2003 sequence: title returns to Excel Innovations.

• 2006-01-05 (recorded) — Reel unverified

  • Conveyance: Judgment of patent ownership
  • Assignor: Excel Innovations, Inc.
  • Assignee: Indivos Corporation, a wholly owned subsidiary of Solidus Networks, Inc., d/b/a Pay By Touch
  • Correspondent: not available from source
  • Context: Litigation outcome, not a negotiated sale — title confirmed to Indivos by judgment, closing out the Excel/Hoffman ownership dispute. Immediately follows the December 2005 settlement with Whorl LLC, in which Solidus (owed >$67M to Whorl) settled and acquired Whorl's biometric payments patents and IP into a Pay By Touch subsidiary.

• 2006-02-16 (recorded) — Reel unverified

  • Conveyance: Grant of patent security interest
  • Assignor: Indivos Corporation
  • Assignee: The Bank of New York, as collateral agent
  • Correspondent: not available from source
  • Context: Securitization — collateral grant under the Solidus lenders' facility (>$109M first lien / ~$50M second lien per the BAP).

• 2007-12-20 (recorded) — Reel unverified

  • Conveyance: Grant of patent security interest
  • Assignor: Indivos Corporation
  • Assignee: The Bank of New York, as agent, as secured party
  • Correspondent: not available from source
  • Context: Securitization, amended/restated — recorded three weeks after the 2007-10-31 involuntary Chapter 11 filing.

• 2008-09-09 (recorded) — Reel unverified

  • Conveyance: Asset sale and purchase agreement
  • Assignors: ATMD Acquisition Corp.; CheckElect, Inc.; Indivos Corporation; Pay By Touch Checking Resources, Inc.; Seven Acquisition Sub, LLC; Solidus Networks, Inc. d/b/a Pay By Touch
  • Assignee: YT Acquisition Corporation
  • Correspondent: not available from source
  • Context: Bankruptcy fire-sale — YT Acquisition Corp. was the lender consortium vehicle (Och-Ziff Capital Management, Plainfield Asset Management and others) that bought core Solidus assets for $4.4M cash plus a $50M credit bid, approved by Judge Donovan in March 2008.

• 2010-09-28 (recorded, two entries: first lien grant and second lien grant) — Reel unverified

  • Conveyance: Release by secured party
  • Assignor: The Bank of New York, as administrative and collateral agent
  • Assignee: Your Technology, Inc. (f/k/a YT Acquisition Corporation)
  • Correspondent: not available from source
  • Context: Lien clearance — encumbrances stripped in preparation for clean transfer of title.

• 2010-10-13 (recorded) — Reel unverified

  • Conveyance: Assignment of interest
  • Assignor: You Technology, Inc.
  • Assignee: **Open Invention Network, LLC
  • Correspondent: not available from source
  • Context: Defensive aggregation — transfer to the Linux-oriented patent non-aggression consortium funded by Google, IBM, NEC, Philips, Red Hat, Sony and SUSE, whose stated charter is a patent-litigation "no-fly zone" around Linux.

• 2015-01-13 — Adjusted expiration; status Expired – Fee Related (maintenance fees not maintained). Google Patents aggregates "current assignee" as Open Invention Network LLC / Excel Innovations Inc / Indivos Corp, which is a roll-up of the chain rather than three concurrent owners.

Timeline diagram

timeline
    title Ownership of US 6581042B2
    1994 : Priority application filed
    2001 : Continuation filed by Indivos Corp
    2003 : Patent issued Jun 17
         : Recorded assignment to Excel Innovations
         : Round trip through Aviv LLC
         : Annulment of assignment recorded
    2006 : Judgment of patent ownership to Indivos
         : Security interest to Bank of New York
    2007 : Solidus Networks chapter 11
    2008 : Assets sold to YT Acquisition Corp
    2010 : Liens released by Bank of New York
         : Assigned to Open Invention Network
    2015 : Patent expired for non payment

NPE / troll-pattern signals

1. Shell-entity transfer — NOT PRESENT (one partial tell).
The only LLC interposition is Aviv, LLC, which took an assignment on 2003-03-26 and assigned back to Excel Innovations on 2003-11-26. That is a genuine intermediary hop, but nothing about it fits the monetization pattern: it round-tripped rather than cascading outward, it was contemporaneous with a corporate merger and an ownership war, and it preceded a self-annulment of assignment recorded 2003-09-16. No evidence of a registered-agent address, no single-purpose Delaware/Texas shell, and both flanking entities (Indivos, Excel) had operating products. Not a finding.

2. Known asserter in the chain — NOT PRESENT.
No link matches Acacia, Marathon, Intellectual Ventures, IPNav, Wi-LAN, Mosaid/Conversant, Vringo, Pendrell, Innovatio, MPHJ, Lumen View, Round Rock, Document Generation Corp, or any Spangenberg entity. The assertion history that exists is operating-company vs. operating-company: Pay By Touch sued BioPay for willful infringement, and BioPay counter-sued Solidus Networks and Indivos in D. Del. Note also that Whorl LLC — a counterparty that won a >$67M result against Solidus and sold its biometric-payments patents into Pay By Touch — appears nowhere in this patent's chain of title. Google Patents flags "Family has litigation" (Darts-IP family 22902856) but no link in this chain is an NPE.

3. Repeat correspondent across the chain — UNCLEAR / NOT ASSESSABLE.
This is the signal I most wanted and could not get: no correspondent of record was retrievable for any of the 13 recorded entries. I am not substituting a guess. Note that even the structural version of this test (same filing firm across links) cannot be run without the reel/frame data.

4. Cascading transfers — PRESENT (structural only; benign explanation).
Six recorded conveyances in roughly eight months in 2003 (2003-03-14, 03-26, 08-11, 09-03, 09-16, plus three on 11-26), including an annulment and an LLC round trip, then a 2006-01-05 court-ordered ownership judgment. Chained LLCs with a shared correspondent address would make this damning; the record shows instead a merger plus a founder-versus-assignee ownership war (Excel Innovations controlling person Ned Hoffman held liable for breach; Excel found liable as his alter ego). Weight this as weak.

5. Pre-litigation transfer — UNCLEAR.
I could not pin the filing date of the first infringement suit naming this patent. The one suggestive adjacency is 2006-01-05 — ownership confirmed by judgment to Indivos days after the December 2005 Whorl LLC settlement — but that is the resolution of litigation, not a pre-filing venue-engineering transfer.

6. Bankruptcy fire-sale — PRESENT (strong).
Solidus Networks d/b/a Pay By Touch: involuntary Chapter 11 2007-10-31, consented 2007-12-14; Indivos Corporation among the ten debtor subsidiaries; debtors owed $159M secured, had no cash and were six weeks behind payroll. Core assets sold to YT Acquisition Corporation for $4.4M cash + $50M credit bid (recorded 2008-09-09). Independently, Excel Innovations filed Chapter 11 on 2004-06-17. Both sides of the 2003 ownership fight ended in insolvency.

7. Privateering — NOT PRESENT.
No evidence Solidus transferred this patent to an assertion vehicle to sue its competitors; the competitors (BioPay) were sued by Solidus itself, and the patent's post-2008 owner was a lender consortium, not an NPE.

8. Defensive aggregator — PRESENT (strong; inverse signal).
2010-10-13: assigned by You Technology, Inc. to Open Invention Network, LLC, after BNY Mellon (Bank of New York) released its first- and second-lien grants on 2010-09-28. OIN is a defensive aggregator whose charter is patent non-aggression in Linux, funded by Google, IBM, NEC, Philips, Red Hat, Sony and SUSE, operating a royalty-free cross-license for the Linux System. The patent then lapsed for non-payment (2015-01-13, "Expired – Fee Related") rather than being asserted. This is the terminal state of the chain and it neutralizes the asset.

Verdict

Defensive / non-asserting.

The chain terminates at Open Invention Network, LLC by assignment recorded 2010-10-13, immediately after Bank of New York released its first- and second-lien security grants on 2010-09-28 — and the patent subsequently expired for non-payment of maintenance fees on 2015-01-13. No listed NPE appears anywhere in the chain, and the interposed Aviv, LLC (2003-03-26 in, 2003-11-26 out) is a round-trip artifact of the Indivos–Solidus merger and the Hoffman/Excel ownership fight, not a licensing vehicle. The nearest thing to an exploitation-of-IP event is the bankruptcy fire-sale recorded 2008-09-09 (Solidus/Pay By Touch core assets to YT Acquisition Corp., $4.4M cash plus $50M credit bid), which moved the patent from an insolvent operating company into a lender vehicle that later passed it to a defensive aggregator.

Confidence caveats. I could not retrieve reel/frame numbers or the correspondent of record for any entry, so signals #3 and #5 are unresolved and the reel/frame citations usually required for this verdict are absent. Verify against the USPTO Assignment Center (https://assignmentcenter.uspto.gov/ and https://assignment.uspto.gov/patent/index.html, search patent 6581042) before relying on this reconstruction for any filing or transaction.

I'll research US patent 6581042B2 and its cited prior art references. Let me start with searches to verify the patent and gather details on the cited references.

I have good data on the first references. Let me gather the remaining cited references.

Prior-Art Analysis — US 6,581,042 B2 ("Tokenless biometric electronic check transactions")

1. Patent identification (verified from the authoritative source)

Priority chain (from the patent's own "Related Application Data"): 09/848,867 ← 09/239,595 (US 6,230,148) ← 08/705,399 (US 5,870,723) ← 08/442,895 (US 5,613,012) ← 08/345,523 (US 5,615,277). The published counterpart is US 2001/0029493 A1.

⚠️ Important limitation on this analysis: The authoritative fetch I was given contains the abstract and full description but not the numbered claim set of the granted patent. Therefore I cannot give a reliable, claim-number-by-claim-number § 102 chart. What follows (a) cites the references the patent itself relies on/identifies, with verified data where the search returned it, and (b) analyzes anticipation at the level of the invention as the specification defines it. Where I could not verify a reference in this session, I say so explicitly rather than fabricating a title or date.

2. The references cited in the patent

US 6,581,042's Background section states that the listed patents are "incorporated herein by reference" as examples of the token-based approach the invention departs from. The references (as literally printed in the patent) are:

Verified via search this session:

1. US 4,821,118 — Lafreniere, "Video image system for personal identification." Issued 1989‑04‑11; filed 1986‑10‑09; assignee Advanced Identification Systems. Observes a unique part of a person's anatomy together with the person's ID card and appearance, and stores the images for later comparison. (Grounding: Google Patents/US 6,219,439 PDF; uspto.report.)
2. US 4,993,068 — Piosenka et al. (Motorola), "Unforgeable personal identification system." Issued 1991‑02‑12; filed 1989‑11‑27. Generates one-way-encrypted versions of immutable biometric credentials (facial photo, retinal scan, voice, fingerprints) stored on a portable memory device (credit-card size); at the access site the user presents the portable memory device and submits a live biometric for comparison. (Grounding: Espacenet US4993068A; Google Patents US4993068.)
3. US 4,995,086 — Lilley et al., "Arrangement and procedure for determining the authorization of individuals by verifying their fingerprints." Uses a portable data carrier (check card with magnetic strip) storing reduced fingerprint feature data; a terminal compares the live fingerprint-derived data with the card data. (Grounding: patentimages US4995086 PDF; uspto.report.)
4. US 5,054,089 — Uchida et al. (Toshiba), "Individual identification apparatus." Finger-image "addition signal" position alignment / comparison; the reference dictionary is an IC card. Issued October 1991 (per the later US 6,160,904 reference list: "5,054,089 10/1991 Uchida"). (Grounding: patentimages US5054089 PDF; US6160904.)

Cited in the patent but I did not independently verify titles/dates in this session (treat as needing confirmation):

I should flag plainly: I did not confirm the bibliographic details (dates, titles, assignees) of the sixteen references in the table immediately above during this session, and I will not assert them from memory. They would need to be pulled from USPTO PatentCenter/Google Patents before being relied upon.

Note also that the patent's front page (per the SumoBrain listing of "Domestic Patent References") appears to carry a broader citation list than the Background discussion — e.g., US 3,943,335 (Kinker et al.), US 4,321,672 (Braun et al.), US 4,390,968 (Hennessy et al.), US 4,675,815 (Kuroki), US 4,799,156 (Shavit et al.), US 4,827,518, US 4,837,422 (Dethloff et al.), US 4,926,480 (Chaum), US 4,961,142 (Elliott et al.), among others. Those were displayed by a secondary source and should be confirmed against the granted front page.

3. Anticipation analysis under 35 U.S.C. § 102

The claim scope to test against. From the abstract and "Summary of the Invention," the independent method claim requires, in substance:

• (a) a payor registration step — register a registration biometric sample and a payor checking account with an electronic identicator;
• (b) a transaction formation step — form an electronic financial transaction including a bid biometric sample obtained from the payor's person;
• (c) a transmission step — electronically forward the bid biometric sample to the electronic identicator;
• (d) a payor identification step — a comparator engine/identification module compares the bid sample with at least one registered sample to produce successful/failed identification; and
• (e) an authorization step — upon success, retrieve the registered checking-account data and issue a biometric-based authorization of an electronic check "without the payor presenting any personalized man-made tokens such as paper checks or magnetic swipe cards."

Key conclusion. Every reference the patent identifies is a token-based system. Lafreniere requires the ID card and facial image; Piosenka requires a portable memory device carried by the user; Lilley requires a check/magnetic-strip data carrier; Uchida requires an IC card dictionary. Each therefore lacks the tokenless-payment element (e). Because anticipation under § 102 requires a single reference to disclose every limitation arranged as in the claim, none of the cited references appears to anticipate the independent tokenless-authorization claim. The patent itself makes this argument ("Uniformly, the above patents … teach away from tokenless biometric financial transactions").

Where the references remain relevant:

• § 102 against dependent/alternative claims: The references that disclose biometric capture + template comparison (Lafreniere; Piosenka; Lilley; Uchida) are potentially anticipatory of any dependent claim that is drafted narrowly to the comparison mechanism alone (e.g., "a comparator engine compares the bid biometric sample with at least one registered biometric sample"). If US 6,581,042's claims include a claim covering only that sub-step divorced from tokenlessness, those four are the ones to chart.
• § 103 combinations: The references are stronger as § 103 art. Piosenka (encrypted biometric credentials + financial/attribute data + remote validation) combined with the check-clearing/ACH references (e.g., the Shin/Elliott-type "multi-issuer transaction device" art and, if it is in fact check-directed, Houvener) is the classic combination an examiner or challenger would assert — i.e., substituting a biometric for a card-present check authorization. This is precisely the obviousness theory the patent tries to pre-empt with its "teach away" argument.
• Probably closest art to the specific "electronic check" concept: US 5,832,464 (Houvener et al.) — if, as the context suggests, it is directed to electronic verification/processing of checks, it is likely to be the single most relevant reference for the "electronic check" aspects (the ACH/execution steps), and should be charted first once its text is confirmed.

Caveats I must state explicitly:

1. I have not read the granted claims of US 6,581,042, so I cannot assign anticipation to specific claim numbers. The statements above are at the independent-claim/limitation level and are the best supported conclusion I can reach from the materials provided.
2. The "anti-anticipation" result depends on the tokenless element being present in the claims. If any granted claim omits it, the analysis for that claim changes, and the biometric-comparison references would move to the center.
3. I could not verify the bibliographies of sixteen of the cited references in this session; those entries should be confirmed against USPTO records before being relied upon.

4. Additional/related references worth checking (not "cited" in the § 102 sense)

• Family/priority documents: US 5,615,277; US 5,613,012; US 5,870,723; US 6,230,148 — these are the priority chain, not prior art against US 6,581,042 itself (same family).
• Sibling applications (same inventors, overlapping disclosure): US 2001/0000535 A1 (Lapsley et al., "Tokenless biometric electronic financial transactions via a third party identicator," filed 2000‑12‑06) and US 2004/0020982 A1. These are co-family art, useful for claim-scope comparison rather than anticipation.
• The Google Patents page indicates litigation history for this family; a validity challenge would most plausibly run through § 103 rather than § 102 for the reasons above.

If you can supply the granted claim text (the authoritative fetch omitted it), I will produce a reference-by-reference § 102/§ 103 chart keyed to specific claim numbers.

I'll ground this analysis in the references listed in the patent's own Prior Art discussion, and verify their disclosures before reasoning about combinations.

Let me pull the remaining cited references and the actual claim language.

Obviousness Analysis — U.S. Patent 6,581,042 B2

Tokenless biometric electronic check transactions (Indivos Corp.; app. 09/848,867, filed 2001‑05‑03; earliest priority 1994‑11‑28)

0. Evidentiary posture — read this first

Three caveats define the confidence level of everything below:

1. The "Prior Art" material supplied is the applicant's own Background discussion, not a USPTO search report. The page's "Prior art keywords" field (payor, transaction, account, electronic, biometric sample) is a machine-generated index of the disclosure, not an examiner designation and not an admission. The reference list itself (Lafreniere, Piosenka, Lilley, Uchida, Barbanell, Yang, Igaki, Kobayashi, Higuchi, Hiramatsu, Lee, Usui, Fishbine ×2, Horie, Bush, Heath, Knapp, Willmore, Houvener) is a group of patents the applicant chose to describe and then characterize as teaching away.
2. I could not retrieve the verbatim claim text within this session (the tool budget was exhausted before I could pull the claims from FreePatentsOnline/Google Patents). Every limitation I analyze below is taken from the Abstract and "Summary of the Invention" of US 6,581,042B2, which track the claim structure. Before filing anything, map this to the actual claim language — particularly whether the independent claim recites the negative limitation "without the payor presenting any personalized man-made token" or merely an affirmative "biometric authorization" step. That distinction largely determines the outcome.
3. Verified in this session (search-confirmed): Houvener US 5,832,464; Lafreniere US 4,821,118; Piosenka US 4,993,068; Fishbine US 5,222,152. Not verified in this session (characterized only from the patent's own grouping and my prior knowledge): Lilley 4,995,086, Uchida 5,054,089, Barbanell 5,095,194, Yang 5,109,427, Igaki 5,109,428, Kobayashi 5,144,680, Higuchi 5,146,102, Hiramatsu 5,180,901, Lee 5,210,588, Usui 5,210,797, Fishbine 5,230,025, Horie 5,241,606, Bush 5,265,162, Heath 5,321,242, Knapp 5,325,442, Willmore 5,351,303. Treat those as leads to confirm, not as established disclosures.

1. Governing law

Because the earliest asserted priority date is 1994‑11‑28, pre‑AIA 35 U.S.C. § 103(a) governs. The controlling framework is Graham v. John Deere Co., 383 U.S. 1 (1966) (scope/content of art; differences; PHOSITA level; secondary considerations) as refined by KSR Int'l Co. v. Teleflex Inc., 550 U.S. 398 (2007) (motivation may be supplied by design incentives, market forces, and "known techniques"; predictable variation; "obvious to try" where the solution is one of a finite number of identified, predictable solutions). Combining references is proper where the references are analogous and the combination does what each reference did in its own way — In re Keller, 642 F.2d 413 (CCPA 1981).

Critical doctrinal limit here: "teaching away" requires that the prior art critically criticize, discredit, or otherwise discourage the claimed subject matter — In re Gurley, 27 F.3d 551, 553 (Fed. Cir. 1994). Mere silence about an alternative, or disclosure of only one approach, is not teaching away. This is the single most important point for the analysis below, because the patent's Background makes a teaching-away argument that is legally far weaker than it appears on its face.

2. The claims as I understand them (limitation decomposition)

From the Abstract / Summary, independent claim 1 appears to require, in substance:

Dependent/optional subject matter disclosed and apparently claimed includes: transaction amount in the formation step; display of account data to the payor or forwarding to a financial transaction processor; registration of a payor PIN; resource determination (sufficient funds); payor account selection among multiple registered accounts; account index codes; digital certificate identification of the payee; PIA hardware identification code; re-registration rejection; a private code presented to the user to authenticate the system; automatic re-presentation of returned checks; write-once logging; third-party check verification and payee override of a decline; use-sensitive master/local DPC architecture with a purge engine; future-dated debit; and cash back. Encryption (triple DES, DUKPT per ANSI X9.24), MACs, sequence numbers, and digital certificates are all described in the specification as known in the industry — those statements are themselves usable admissions (MPEP § 2129).

3. What the cited art actually supplies

The structural fact that dominates this analysis: every one of these references operates in the field of identity verification for financial transactions, and every one involves a token. The patent is candid about this, and it is the applicant's principal non-obviousness theme.

4. Threshold issue #1 — Which references are even available? (this may decide the case)

This is not a detail; it can be dispositive.

• The 1989–1994 references (Lafreniere, Piosenka, Fishbine, etc.) all predate 1994‑11‑28 and are available regardless of how the priority question resolves.
• Houvener US 5,832,464 is not safely prior art on the 1994 date. Its chain is 08/436,146 filed 1995‑05‑08 → 08/700,815 filed 1996‑08‑21 → 08/967,768 filed 1997‑11‑10 (see the sibling US 6,202,055B1, confirmed in search). Its earliest §102(e) date is therefore 1995‑05‑08 — after 1994‑11‑28. If the claims at issue are entitled to the 1994‑11‑28 date, Houvener drops out entirely, and with it the single best primary reference in this set.
• Consequently, the pivotal question is whether the "electronic check"/ACH-specific limitations are supported by the 1994‑11‑28 parent (US 5,615,277, "tokenless security system for authorizing access to a secured computer system") or only entered with US 5,613,012 (1995‑05‑17), US 5,870,723 (1996‑08‑29), or US 6,230,148 (filed 1999‑01‑29). A computer-access disclosure is a materially different field from electronic check drafting/ACH origination; a priority challenge on that basis (§ 112 ¶ 1 written description, applied through the priority chain) would both (a) push the effective date to 1996 and make Houvener available, and (b) expose the claims to a much larger body of intervening art from 1994–1998 that is not in this reference list.
• Same-family art is unusable. US 5,615,277, US 5,613,012, US 5,870,723, US 6,230,148 and WO 98/09227 (the PCT of 08/705,399, published 1998‑03‑05) share the priority chain. They are the closest disclosures of tokenless biometric transaction authorization, and they are precisely the ones a petitioner cannot use unless the priority challenge above succeeds. Flag this asymmetry explicitly: the patent's best shield (its own earlier tokenless applications) is also the reason no reference in the list discloses the tokenless limitation.

5. Threshold issue #2 — The "teaching away" statement does not do the work the applicant thinks it does

The Background states: "Uniformly, the above patents disclose financial systems that require the user's presentation of personalized tokens … thereby teaching away from tokenless biometric financial transactions."

Three problems:

1. Legally, silence is not teaching away. Under In re Gurley, the art must criticize, discredit, or discourage the claimed approach. Disclosing only card-based systems, without disparaging tokenless operation, does not meet that standard. The references simply are not addressed to the problem.
2. Much of the reference list does identify the very problem the invention solves. Piosenka is the clearest example: it expressly flags that "Lost or stolen identification cards are a problem of some of the above-mentioned systems," that forgery of ID cards may go undetected, and that the alternative — biometrics carried on the card — still requires the card. Houvener expressly frames its object as removing the driver's-license token from check acceptance and removing paper checks from the financial infrastructure. Those are motivating problems, not discouragements. Under KSR, a recitation of the problem to be solved plus a finite set of predictable solutions supplies the rationale.
3. The "teaching away" conclusion is attorney characterization of the references, not a reference disclosure. It carries little weight where the references' actual text does not support it.

Where the applicant does have a real argument. The patent's Background contains a distinct and more credible point: "the consumer financial transaction industry has had a simple equation to balance: in order to reduce fraud, the cost and complexity of the personalized token directly possessed by the user must increase." That is a claim about industry mindset / skepticism — i.e., evidence of the secondary consideration of unexpected results or industry disbelief (see § 10). It is a better argument than "teaching away," but it is still just attorney argument absent documentary evidence.

6. Threshold issue #3 — Applicant admissions usable as prior art (MPEP § 2129)

The specification repeatedly concedes the state of the art, and those concessions are admissions:

• Triple-DES and public/private key encryption are "well known in the industry."
• DUKPT is "well known in the industry," "fully specified in ANSI X9.24."
• Message authentication codes are "well known in the transaction industry."
• Public-key digital certificate validation "processes … are well understood in the industry."
• Methods of biometric classification for rapid database search "are known in the art" (facial imaging, iris).
• The PIA hardware identification code is not used to identify either payor or payee in home/public-terminal embodiments.
• A checking account is defined to include "any type of a financial account from which an ACH transaction can be originated."

These concessions strip support from any argument that the cryptographic, key-management, certificate, or ACH-mechanics limitations are independently inventive. They remain limiting only insofar as they are structurally combined with the tokenless biometric identification step.

7. Combination #1 — Primary § 103 case on independent claim 1

Houvener US 5,832,464 in view of Fishbine US 5,222,152 and/or Piosenka US 4,993,068.

Element mapping:

• A (enrollment: biometric + checking account): Houvener correlates an account number read from the instrument to a biometric reference and stores verification data at a remote site.
• B (bid biometric from the payor's person): Fishbine (fingerprint scanner capturing a live print in the field) and Piosenka (remote site captures the live immutable trait).
• C (electronic forwarding to identicator): Fishbine's wireless transmission of the print image to a central facility; Piosenka's remote-site-to-central-repository transmission with encryption.
• D (1:N comparison → success/fail): Fishbine (central facility performs identity verification against a central database); Piosenka (central repository matches the transmitted trait against prestored data and returns allow/deny).
• E (retrieve previously registered checking account data): Houvener maps account↔identity; its stated object is to remove the check from the settlement path.
• F (electronic check authorization, no token presented): Houvener supplies the "electronic funds transfer" settlement objective ("without the need for processing paper checks through the financial infrastructure"), but does not supply elimination of the presentment of the instrument itself. This is the gap.

Motivation to combine (KSR):

• Same field of endeavor: all three patents address positive identity verification for financial/access transactions; Houvener expressly addresses check acceptance at the point of use, Piosenka expressly addresses point-of-sale terminals and check cashing. In re Keller / analogous-art.
• Reasonable expectation of success: biometric identification against a central database was a mature, demonstrated technique (Fishbine, Piosenka both do it).
• Design incentive supplied by the references themselves: Piosenka's identification of the lost/stolen/forged card problem; Houvener's stated desire to remove the driver's-license token and the paper check from the process. The predictable next step is to index the account by the biometric instead of by the check.
• "Obvious to try": Houvener already teaches either-or ("the account number to a biometric or other piece of data"), and one of a very small number of identified solutions to removing the token is to make the biometric itself the index.

The weakness, stated plainly: Limitation F contains a negative limitation, and no reference in this list discloses a check/ACH transaction in which the payor presents no token whatsoever. The combination therefore rests on a KSR rationale rather than an explicit disclosure. A patentee will argue that (i) Houvener's invention is defined by scanning the check, so removing the check changes the principle of operation of the reference (a legitimate In re Ratti-style argument), and (ii) the art's "balance" mindset (§ 5.3) discouraged the very step. Those are the two arguments to defeat. Both are answerable but neither is frivolous.

Assessment: ~50/50 on independent claim 1 as I understand its scope, and highly contingent on the priority question in § 4. If Houvener is knocked out on priority, this combination collapses and I see no substitute primary reference in the supplied list that discloses electronic-check/EFT settlement at all.

8. Combination #2 — Alternative primary using presentment-side art

Houvener + Lafreniere US 4,821,118 + Piosenka.

Lafreniere is the only listed reference that expressly ties biometric capture at the point of sale to check payment (as well as charge-card payment) and to capturing the ID card alongside the biometric. Its utility is narrow: it supports enrollment (limitation A) and the audit record concept, and it shows that the check-acceptance environment was already using biometric capture. It is weak for limitations D–F because Lafreniere records images for later human review rather than performing automated 1:N matching with a remote database. Use it as a secondary, not a primary.

9. Combination #3 — Dependent limitations (these are the easy cases)

For any claim whose novelty rests on a sub-feature rather than the tokenless enrollment, the cited art supports obviousness with much greater confidence:

10. Secondary considerations

For the patentee:

• Long-felt need / magnitude of the problem: the specification recites ~65 billion paper checks annually, >$10B fraud losses, >$40B processing costs. If supported by contemporaneous documentation, this is a Graham factor.
• Industry skepticism: the "reduce fraud ⇒ more complex token" mindset, if evidenced by documents rather than attorney characterization.
• Commercial success: the assignee chain (Indivos → Excel Innovations → Aviv → YT Acquisition → Open Invention Network) and the Darts-IP "family has litigation" flag indicate real deployment and real disputes. Nexus to the claims is required, and the fact that the asserted claims here expire by fee non-payment in 2015 while litigation ran through the family suggests licensing/enforcement activity — which can be probed.
• Copying / recognition.

Against the patentee:

• Much of the claimed subject matter (crypto, DUKPT, certificates, ACH, MICR) is admitted old.
• The claims are method/architecture claims in a crowded, fast-moving field; a POSITA in 1994 was a team including a payments/ACH engineer, so "doing it all in software on a network" was within ordinary skill.
• The family is a continuation chain terminating in 2001, and the claims read as an attempt to capture the generic idea rather than any specific improvement — inviting the KSR "predictable variation" treatment.

11. Bottom line

1. The supplied reference set cannot, on its own, be stretched far enough to make independent claim 1 a comfortable § 103 rejection. Limitation F — authorization of an electronic check with no token presented at all — is disclosed by none of the listed references, and the strongest primary reference that reaches electronic-check/EFT settlement (Houvener US 5,832,464) may not even be prior art if the claims carry the 1994‑11‑28 date.
2. The single highest-leverage move is a priority/support challenge. If the electronic-check and ACH limitations are not supported by the 1994‑11‑28 parent (US 5,615,277, which is directed to securing computer access), the effective date shifts to 1995/1996/1999; Houvener becomes available; the same-family tokenless applications remain unavailable; and a large body of 1994–1998 intervening electronic-payment art — none of which is on this page — comes into play.
3. Absent that, the realistic attack is a dependent-claim attack (encryption, PIN, remote 1:N matching, multiple-account selection, digital certificates, hardware ID, ACH settlement, re-presentment, logging, decline/override), where Piosenka, Fishbine and Houvener supply the elements and the motivation is routine design in a shared field. The use-sensitive master/local DPC with purge-engine limitation is the one element the supplied art does not reach.
4. The "teaching away" argument in the Background is materially overstated under In re Gurley: the cited references are silent on, not hostile to, tokenless operation — and Piosenka and Houvener affirmatively identify the token/card as the security weakness to be eliminated, which supplies, rather than negates, the motivation to combine. The applicant's better non-obviousness argument is the industry-mindset/§ 103 secondary-considerations framing, and it requires documentary proof.

Practical recommendation: before committing to any combination, (a) obtain the verbatim claim text and confirm whether limitation F is a negative limitation in the independent claim; (b) reconstruct the written-description support for "electronic check"/ACH across US 5,615,277 → 5,613,012 → 5,870,723 → 6,230,148; and (c) verify the disclosures of the unverified references (Uchida 5,054,089, Igaki 5,109,428, Bush 5,265,162, Willmore 5,351,303, Knapp 5,325,442, Kobayashi 5,144,680, Lilley 4,995,086) directly, since three of the six targeted searches in this session could not be completed and I will not attribute disclosures to them.

Nothing here is a legal conclusion or a validity opinion; the patent's expired-fee status, the assignment history, and the Darts-IP litigation flag are facts of record, not analyses.