Invalidity dossier
US 9641849
Video encoding apparatus, video decoding apparatus, and video decoding method for performing intra-prediction based on directionality of neighboring block
Current assignee: Ideahub Inc
Added 9/23/2026, 5:31:59 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 — US 9,641,849 B2
Title: Video encoding apparatus, video decoding apparatus, and video decoding method for performing intra-prediction based on directionality of neighboring block
Patent number / application: US 9,641,849 B2; application US 15/260,240; publication US 2016/0381366 A1.
Inventors: Je Chang Jeong, Soon Jong Jin, Sang Jun Park, Hyuk Lee.
Assignee: Originally ARISCALE Inc.; current assignee listed as Ideahub Inc (assignment recorded 2018-06-21). The source notes listed assignees may be inaccurate and that no ownership analysis was performed.
Dates: Priority date 2009-12-30 (stated as an assumption, not a legal conclusion). Filing date 2016-09-08. Publication date 2017-05-02. Anticipated expiration listed as 2030-12-23. Legal status: Active (also an assumption per the source).
Purpose / plain-language scope: The patent concerns video encoding and decoding in which intra-prediction (spatial prediction, i.e., predicting a block from nearby already-coded pixels rather than from another frame) is performed based on the directionality of a neighboring block. Terms appearing in the source include intra mode, current block, neighboring block, partition, extrapolation, transform, quantization, and residual coding, indicating the disclosure addresses mode selection and prediction within a predictive video-coding pipeline. Classification H04N19/593 (predictive coding involving spatial prediction techniques) and H04N19/11 (selection among multiple spatial predictive coding modes) corroborate this general subject matter.
What the excerpt does not establish: The supplied text is largely bibliographic and classification data, with images and description omitted. It does not include the claims, detailed description, or abstract, so the specific claimed steps, mode sets, and directionality-determination rules cannot be stated. The priority date, expiration date, legal status, and assignee listings are expressly flagged as assumptions or potentially inaccurate. The source also references PTAB case IPR2020-00702 and a first worldwide family litigation filing, but no findings on those matters are established here.
Generated 10/1/2026, 9:43:32 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.