Invalidity dossier
US 6267670
Added 9/23/2026, 5:53:40 PM
Active provider: DeepSeek · deepseek-flash
Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview — US 6267670 B1
Title: System and method for performing lottery ticket transactions utilizing point-of-sale terminals
Patent number: US 6267670 B1
Application number: US08/822,709
Inventors: Jay S. Walker, James A. Jorasch, Sanjay K. Jindal
Original assignee: Walker Digital LLC (later listed current assignees: RetailDNA LLC; Inventor Holdings LLC)
Priority/filing date: 1997-03-21
Publication (grant) date: 2001-07-31
Legal status as listed: Expired – Lifetime (anticipated expiration 2017-03-21)
Prior-art keywords listed: lottery; lottery ticket; change amount; request; purchase
Classification (excerpt): G06Q20/00, G06Q20/38, G06Q20/387 (payment architectures/protocols; payment using discounts or coupons); A63F9/00 (games not otherwise provided for)
Purpose and plain-language scope (from the supplied text): The patent concerns conducting lottery ticket transactions through point-of-sale terminals — that is, using retail checkout equipment rather than a dedicated lottery terminal to request and purchase lottery tickets. The listed prior-art keywords ("lottery," "lottery ticket," "change amount," "request," "purchase") indicate the disclosed subject matter centers on handling a lottery ticket request and purchase at the point of sale, including the treatment of a change amount. The abstract, specification, drawings, and claims are not included in the supplied excerpt, so the precise mechanisms and claim boundaries cannot be described from this source alone.
Source: https://patents.google.com/patent/US6267670/en
What this excerpt does not establish:
- The text of any claim, the abstract, or the written description (all omitted).
- What the invention actually does beyond the keyword list and classification.
- Whether cited priority applications, family members, or reassignments affect scope.
- Litigation, validity, patentability, or prior-art conclusions.
- Whether the listed assignees or legal status are accurate (the source itself labels these as assumptions/non-legal conclusions).
Per the stated operating rules, no ownership transfers, litigation, validity, or prior-art research is included here.
Generated 10/1/2026, 9:43:12 PM
Cases on file (0)
Specific litigation cases in our database that name US patent 6267670. The free-form analysis below may also discuss cases beyond this list.
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Litigation summary
Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.
Proceedings on file (0)
All PTAB activity →AIA trial proceedings (IPR / PGR / CBM) filed at the USPTO Patent Trial and Appeal Board against this patent. Sourced from the USPTO Open Data Portal and refreshed every six hours; each proceeding number deep-links to the PTAB E2E docket.
No PTAB proceedings on file. This patent has not been challenged via IPR, PGR, or CBM. The absence is itself a signal — well-asserted patents eventually attract IPRs. The LLM analysis below may surface filings the ODP feed hasn’t indexed yet.
PTAB challenges
AIA trial proceedings at the USPTO Patent Trial and Appeal Board — IPR, PGR, and CBM. Petitioners, judge panels, claim-level invalidation outcomes from Final Written Decisions, and Federal Circuit appeals. The single most important defensive datapoint after litigation history.
Assignment history
Inventors, original assignee, and the chain of ownership recorded with the USPTO — including the correspondent attorney who recorded each assignment, since shell-LLC chains often share one repeat-player attorney even when the entity names look unrelated. Surfaces NPE / patent-troll patterns: shell-entity transfers, known asserters in the chain, repeat correspondent fingerprints, pre-litigation assignments, and bankruptcy fire-sales.
Prior art
Earlier patents, publications, and products that may anticipate or render the claims unpatentable.
Obviousness
Combinations of prior art that suggest the claimed invention would have been obvious under 35 U.S.C. § 103.
Extensions
Patent term adjustments, term extensions, continuations, divisionals, family members, and expiration dates.
Derivative works
Defensive disclosure: derivative variations of each claim designed to render future incremental improvements obvious or non-novel.