Invalidity dossier
US 265768
Road-cart
Added 9/23/2026, 9:04:40 PM
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Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview — US 265,768
Title: Road-Cart
Patentee: Jacob W. Diller, of Decatur, Illinois
Patent number: US 265,768
Application filed: July 3, 1882
Granted/Published: October 10, 1882
Source: https://patents.google.com/patent/[US265768](/patent/US265768)/en
Purpose and plain-language scope. The patent describes a two-wheeled road-cart whose axle is arched and whose springs extend from side to side beneath the axle. The springs used are identified as the Timkin or Woodhull type, swung one on each side of the axle. A pair of iron bars is hinged to a cross-bar of the shafts; these bars extend down and back to support a foot-rest, and also extend up and back over the springs to form a support for the seat. The seat is further steadied by a pair of swinging braces connecting it to the rear of the shafts. Braces strengthen the shafts and furnish supports for the springs. The drawings comprise Fig. 1 (plan), Fig. 2 (side elevation), and Fig. 3 (rear view of springs and axle). Reference characters: a, seat; b, platform or strip carrying the shaft cross-bars, to which the springs and seat-bars attach; c, axle; d d, bars supporting seat and foot-rest; e e e e, foot-rest; f f, swinging braces; g g, springs; h and n n, braces strengthening the shafts and supporting the springs.
Claims (as stated). 1. Arched axle c, strip b, and springs g g, as and for the purpose set forth. 2. The combination, with shafts m m and axle c, of braces n n forming supports for the springs. 3. The swinging frame b d e f, hinged to the shafts m m and supported by springs g g.
What the excerpt does not establish. It names no assignee and shows no ownership transfer; no litigation, validity, or prior-art determination is made here. The "Expired — Lifetime" status and 1899 "anticipated expiration" entry are record-keeping notations only, not legal conclusions. Attesting witnesses are Abram Kramer and L. P. Graham.
Generated 10/1/2026, 9:40:57 PM
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Litigation summary
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Proceedings on file (0)
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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.