Invalidity dossier
US 10433662
Added 10/22/2026, 12:01:01 PM
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Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
US 10,433,662 B2 — "Blanket-Based Structures"
Title: Blanket-Based Structures
Patent number: US 10,433,662 B2 (published as US 2019/0208934 A1)
Inventors: Kris Distefano; Vennessa Distefano
Original assignee: Distefano Solutions, LLC. Google's record lists the current assignee as Ozma LLC (reassignment recorded 2026-07-22). Acting under the operating rules, I report this only as what the source shows and take no position on ownership.
Dates: Priority date 2017-02-24; application US 16/355,541 filed 2019-03-15; granted 2019-10-08; legal status listed as Active; anticipated expiration 2037-02-24.
Purpose: The patent notes that collapsible play structures lack structural integrity and can collapse or injure a child, while fixed-shape structures limit the diversity of configurations. It aims to provide portable blanket-based play structures that address these problems.
Plain-language scope (from the excerpt): A system or kit for assembling and modifying blanket-based structures. An enclosure element (a blanket-type fabric) carries attachment mechanisms fixed to it that detachably connect to environmental structures — e.g., doorknobs, chairs, couches, mattresses, and, outdoors, trees, benches, or fences. The system includes connection features, complementary connection features, and eyelets along the enclosure element's perimeter. Weights are selectively attachable at those features. A detachable corner strap has a securing region fixed to the enclosure element and a strap ending in an attachment patch that detaches from the securing region; when attached, the strap extends substantially diagonally across a corner. Anchoring portions of the enclosure element defines an enclosed space.
Classifications listed: A47G9/02 (blankets), A63H33/00 and A63H33/008 (playhouses/play tents), E04H15/00 and E04H15/006 (tents; toy tents).
Source: https://patents.google.com/patent/US10433662/en
What this excerpt does not establish: The full claim set and the precise limitations of each claim; the complete specification, remaining figures, and any drawing details; the examiner's reasons for allowance; and the content or dates of any prior art. The excerpt includes only partial descriptive text, so it does not show the claims.
Generated 10/22/2026, 12:01:07 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
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Obviousness
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Extensions
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Derivative works
Defensive disclosure: derivative variations of each claim designed to render future incremental improvements obvious or non-novel.