Invalidity dossier
US 10591115
Added 9/23/2026, 5:17:29 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 — US10591115B2
Title: Retrofit kit and methods for conversion of fluorescent light assemblies to LED assemblies
Patent number: US10591115B2
Application number: US15/679,464
Inventor: Alessandro OSSI
Original/Current Assignee: C2 Semiconductor LLC (Google notes its assignee list "may be inaccurate" and that it performed no legal analysis)
Priority date: 2016-08-18 (stated as an assumption)
Filing date: 2017-08-17
Publication date: 2020-03-17 (application granted)
Legal status: Active, adjusted expiration 2038-01-11 (stated as an assumption, not a legal conclusion)
Other version: US20180051854A1. A later application, US16/818,309, claims priority to this filing (published as US10788162B2).
Purpose (plain language): The patent concerns a kit and methods for converting existing fluorescent light assemblies into LED assemblies — i.e., retrofitting, rather than replacing, fluorescent fixtures. The listed prior-art keywords ("bracket," "end portion," "wall," "assembly," "bracket member") indicate the disclosure centers on bracket structures with walls and end portions for mounting within a light assembly.
Classification scope: F21K9/00 and F21K9/20–9/23 (semiconductor/LED light sources and retrofit light sources); H05B45/00, H05B45/30, H05B45/357 and H05B45/3578 (LED driver circuits, including those for retrofit sources and emulating discharge-lamp characteristics); F21S8/00 and F21S8/02–8/026 (fixed recessed lighting, e.g., suspended-ceiling downlighters).
Not established by the supplied excerpt:
- The actual claims, claim language, or claim scope — no claims text was supplied.
- The detailed description, drawings, or specific bracket/method embodiments.
- The number of claims, dependency structure, or claim type.
- Any prosecution history, prior-art rejections, or cited references.
- The identity or rights of any other real parties in interest beyond the assignee listing.
- Accuracy of any date or legal-status field; the source itself labels priority date, legal status, and assignee as assumptions or unverified.
Source: https://patents.google.com/patent/[US10591115](/patent/US10591115)/en
Generated 10/1/2026, 9:43:41 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.