Invalidity dossier
US 7364342
Added 9/23/2026, 7:37:10 PM
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Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
US7364342B2 — Concise Patent Overview
Title: Light redirecting films pattern of variable optical elements
Patent number: US7364342B2
Application number: US11/484,063
Inventors: Jeffery R. Parker; Timothy A. McCollum; Robert M. Ezell
Original assignee: Solid State Opto Ltd
Current assignee (as listed): Innovative Display Technologies LLC
Priority date: 1999-02-23 (claimed from US09/256,275)
Filing date: 2006-07-11
Publication date: 2008-04-29
Legal status: Expired – Fee Related; anticipated expiration 2019-02-23
Purpose and plain-language scope:
Based only on the supplied excerpt, the patent is directed to "light redirecting films" having a "pattern of variable optical elements." The named prior-art keywords are light, film, substrate, optical elements, and backlight, indicating a backlight/lighting context rather than a general optics disclosure. Classification codes place it in lighting refractors (F21V5/00) and in light guides of planar or plate-like form with redirecting means on the surface of the light guide (G02B6/0011, G02B6/0018), consistent with a film that redirects light from a backlight or light guide. In plain terms: a light-redirecting film whose optical elements vary in pattern across the film.
Prosecution/ownership chronology shown in the excerpt:
- 2006-07-11: application filed by Solid State Opto Ltd
- 2006-11-16: US20060256577A1 published
- 2008-04-29: application granted and US7364342B2 published
- 2010-02-18: assignment to Rambus International Ltd.
- 2013-03-04: assignments to Rambus Inc. and Rambus Delaware LLC
- 2013-06-26: assignment to Acacia Research Group LLC
- 2013-06-27: assignment to Innovative Display Technologies LLC
- 2020-06-05 and 2020-07-08: security-interest and release records naming Starboard Value Intermediate Fund LP
- 2021-01-12: corrective assignment records to Innovative Display Technologies LLC
- 2019-02-23: anticipated expiration
What the excerpt does not establish:
The supplied text contains no claims, no written description, no drawings content, and no abstract. It therefore does not establish the actual claimed scope, the specific structure or arrangement of the "variable optical elements," any numerical ranges, or any embodiment details. The excerpt also does not show any prior-art references or examiner citations, and it does not establish litigation, ownership accuracy, or validity. The assignee list is expressly noted as potentially inaccurate and not legally analyzed.
Source: https://patents.google.com/patent/[US7364342](/patent/US7364342)/en
Generated 10/1/2026, 9:41:55 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.