Invalidity dossier
US 7165873
Light emitting panel assemblies
Current assignee: Innovative Display Technologies LLC
Added 9/23/2026, 2:36:23 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 — US7165873B2
Title: Light emitting panel assemblies
Patent number: US7165873B2
Application number: US11/133,584
Inventor: Jeffery R. Parker
Original assignee: Solid State Opto Ltd
Current assignee (as listed): Innovative Display Technologies LLC
Priority date: 1995-06-27 (claimed from US08/495,176, which issued as US5613751A)
Filing date: 2005-05-20
Publication date: 2007-01-23 (application published as US20050207178A1 on 2005-09-22)
Legal status: Expired – Fee Related; anticipated expiration 2015-06-27
Purpose and plain-language scope (per the supplied text):
The patent concerns light emitting panel assemblies. The source's classification entries place the disclosure in light guides and lighting systems—particularly planar or plate-like light guides, means for improving coupling of light into the guide (including shaping of the guide, e.g. collimating, focusing or diverging surfaces, and recesses or holes for housing at least part of a light source), and means for coupling light out of the guide (including 2-D arrangements of prisms, protrusions, indentations or roughened surfaces). Other listed classes cover illuminated signs/luminous advertising, refractors for light sources comprising photoluminescent material, and devices for inducing sleep or relaxation. In plain terms, the excerpt indicates a panel that receives light from a source, guides it within a plate-like member, and emits it in a controlled manner—useful for displays, signs, or general lighting.
The source also lists prior-art keywords: light, assembly, panel member, light source, transmitting layer.
Cited source: https://patents.google.com/patent/[US7165873](/patent/US7165873)/en
What the excerpt does not establish: The supplied text omits the abstract, detailed description, drawings, and full claim language; therefore the specific claimed structure and the exact scope of coverage cannot be determined. It also does not establish inventorship beyond the single named inventor, the accuracy of the listed assignees, or the correctness of the legal status and priority dates, which the source itself labels as assumptions. The "Family has litigation" links appear in the source but are outside the scope of this overview and were not researched. No missing facts have been inferred.
Generated 10/1/2026, 9:52:08 PM
Cases on file (0)
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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.