Invalidity dossier
US 7745828
Organic light emitting device and manufacturing method thereof
Current assignee: Samsung Display Co Ltd
Added 9/23/2026, 9:33:39 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 — US7745828B2
Title: Organic light emitting device and manufacturing method thereof
Patent number: US7745828B2
Application number: US11/982,169
Inventors: Byoung-Seong Jeong; Kyu-Sik Cho; Joon-hoo Choi; Yong-Hwan Park
Original assignee: Samsung Electronics Co., Ltd. Current assignee (as listed): Samsung Display Co., Ltd.
Key dates (as listed):
- Priority date: 2007-01-11
- Filing date: 2007-10-31
- Publication of US20080169463A1: 2008-07-17
- Grant/publication of US7745828B2: 2010-06-29
- Adjusted expiration: 2028-03-06
- Legal status listed as Active
Purpose and plain-language scope (based only on supplied text):
The supplied excerpt identifies the invention as an "organic light emitting device" and a method for manufacturing it. The only technical content appearing in the excerpt consists of the prior-art keywords "driving," "light emitting," "switching," "organic light," and "emitting device," which suggest the subject matter involves driving and switching circuitry for an organic light emitting device. The excerpt does not include the abstract, claims, or detailed description, so no further scope can be stated without speculation. Beyond the title, bibliographic data, and those keywords, the excerpt does not establish the specific device architecture, pixel or drive-circuit configuration, materials, process steps, or claim coverage.
Not established by this excerpt:
- The text of any claim, the abstract, or the written description (all omitted from the supplied material).
- Whether the listed "Active" legal status or the 2028-03-06 adjusted expiration is accurate — the source itself states these are assumptions, not legal conclusions.
- The accuracy or completeness of the listed assignees; the source disclaims performing a legal analysis.
- Any information about prosecution history, prior art cited, or scope of enforceable claims.
Source: https://patents.google.com/patent/[US7745828](/patent/US7745828)/en (fetched 2026-09-23)
Generated 10/1/2026, 9:34:13 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.