Invalidity dossier
US 6827456
Transreflectors, transreflector systems and displays and methods of making transreflectors
Current assignee: Innovative Display Technologies LLC
Added 9/23/2026, 12:47:56 PM
Active provider: DeepSeek · deepseek-flash
Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
US 6827456 B2 — Patent Overview
Title: Transreflectors, transreflector systems and displays and methods of making transreflectors
Patent number: US 6827456 B2 | Application: US10/010,835, filed 2001-12-05 | Granted: 2004-12-07 | Priority date: 1999-02-23 (claimed from US09/256,275) | Status listed: Expired – Lifetime (anticipated expiration 2019-02-23)
Inventors: Jeffery R. Parker, Timothy A. McCollum
Original assignee: Solid State Opto Ltd (assignment recorded 2001-12-05)
Current assignee (as listed): Innovative Display Technologies LLC
Other version: US20020080598A1
Purpose (from the title and prior-art keywords): The patent concerns "transreflectors" — optical components that both transmit and reflect light — plus systems and displays incorporating them, and methods of making them. The prior-art keywords listed ("transreflector," "light," "substrate," "exterior," "deformities") indicate the disclosure involves a substrate with exterior deformities that interact with light.
Plain-language scope: Based only on this record, the patent is directed to a transreflector (a light-transmitting/reflecting element) and to assemblies and displays using it, along with fabrication methods. Because no claim text appears in the supplied excerpt, the precise metes of the monopoly cannot be stated. The record also shows international family members claiming priority from the same 2002-11-25 PCT filing (WO2003050448A1), including EP1451502B1, JP4378172B2, KR100989695B1, KR101060467B1, and related EP and KR cases, plus divisional/continuation US filings (e.g., US7497599B2, US7448775B2, US7875218B2, US7887227B2, US7819558B2, US7806539B2).
Source: https://patents.google.com/patent/US6827456/en
What this excerpt does not establish: It contains no abstract, description, drawings text, or claims, so the specific claimed structure, materials, dimensions, and embodiments are unknown. It does not establish the technical content of the priority application US09/256,275, nor the substance of the cited related filings. Dates and legal status are expressly stated by the source to be assumptions, not legal conclusions, and the assignee listing is likewise stated to be potentially inaccurate. No prior-art comparison is presented.
Generated 10/1/2026, 9:53:29 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.