Invalidity dossier
US 215705
Peters
Added 9/23/2026, 3:24:13 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: US215705A
Title / Inventor designation: The Google Patents page for US215705A lists the title simply as "Peters." The description field contains two distinct captions: "U. D. WOOD. Leather-Burnishing Machine." and "O. D. WOOD. Seam Covering Stays for Boots and Shoes." with "No. 215,706. Patented May 20,1879" appearing beneath them. The "Peters" label appears to be the record's inventor/name field, but the supplied excerpt does not establish that "Peters" is the inventor of US215705A specifically.
Key dates:
- Prior art date: 1879-05-20
- Publication date: 1879-05-20 (application granted)
- Anticipated expiration: 1896-05-20
- Legal status: Expired – Lifetime
Assignee: None stated in the supplied text.
Purpose / plain-language scope: Based only on the classification and description fragments, the disclosure relates to mechanical treatment of leather — specifically finishing the edges of leather pieces. Classification C14B11/00 covers "Finishing the edges of leather pieces, e.g. by folding, by burning." The description captions reference a leather-burnishing machine and seam-covering stays for boots and shoes, and prior-art keywords include "peters," "wood," "boots," "shoes," and "leather." In plain terms, the excerpt suggests an apparatus or method for smoothing/finishing leather edges, likely in boot-and-shoe manufacture — but no claims are provided to define the actual scope.
Cited by: US12460273B1 (priority 2024-07-19; published 2025-11-04; assignee Christopher Hoffman; "Leather burnishing tool"), marked as cited by examiner.
Source: https://patents.google.com/patent/[US215705](/patent/US215705)/en
What the excerpt does not establish:
- No claims, abstract, or full specification text is present, so the actual claimed scope is unknown.
- The relationship between "Peters," "U. D. WOOD," and "O. D. WOOD" is unexplained; the captions may belong to a companion patent (No. 215,706) rather than to US215705A.
- No assignee, inventor of record, or filing date is confirmed.
- No drawings, figures, or detailed description are available to verify the described mechanism.
Generated 10/1/2026, 9:51:38 PM
Cases on file (0)
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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.