Invalidity dossier
US 6712481
Light emitting panel assemblies
Current assignee: LEE MANG-SHIANG
Added 9/23/2026, 7:46:32 PM
Active provider: DeepSeek · deepseek-flash
Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
US6712481B2 — Light Emitting Panel Assemblies
Title: Light emitting panel assemblies
Patent number: US6712481B2 (application US09/256,275)
Inventor(s): Jeffery R. Parker; Gregory A. Coghlan; Robert M. Ezell
Original assignee: Solid State Opto Ltd
Current assignee (per listing): LEE MANG-SHIANG; Innovative Display Technologies LLC
Priority date: 1995-06-27 (claimed from US08/495,176)
Filing date: 1999-02-23
Publication date: 2004-03-30 (application published as US20020141174A1 on 2002-10-03)
Legal status: Expired – Fee Related; anticipated expiration 2015-06-27
Purpose and plain-language scope (from the supplied excerpt): The patent concerns light emitting panel assemblies. The only scope information the excerpt provides is its prior-art keyword list: "panel," "deformities," "light," "panel assembly," and "light source." Taken literally, this indicates a panel assembly in which light from a light source is distributed via deformities in the panel. The excerpt does not include the claims, abstract, or description, so no specific apparatus features, claim limitations, or embodiments can be stated.
Procedural record in the excerpt: The application was filed 1999-02-23 by Solid State Opto Ltd, with assignments recorded to LUMITEX, INC. (1999-02-23; 2001-02-02), LEE, MANG-SHIANG (2001-03-15), SOLID STATE OPTO LIMITED (2001-03-20), RAMBUS INTERNATIONAL LTD. (2010-02-18), RAMBUS INC. and RAMBUS DELAWARE LLC (2013-03-04), ACACIA RESEARCH GROUP LLC (2013-06-26), and INNOVATIVE DISPLAY TECHNOLOGIES LLC (2013-06-27). A large family of continuations and foreign counterparts (e.g., WO2000050807A1, EP1163473B1) is listed.
What the excerpt does not establish: It does not establish the actual claimed subject matter, the specification's description of the "deformities," any drawing content, the identity or relevance of any prior art, or the correctness of any listed assignee, date, or legal status. It also does not establish litigation, validity, enforceability, or ownership outcomes; the source notes that legal status and dates are assumptions and not legal conclusions.
Source: https://patents.google.com/patent/[US6712481](/patent/US6712481)/en (fetched 2026-09-23).
Generated 10/1/2026, 9:41:50 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
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.