Invalidity dossier
US 9918093
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, 2:04:59 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: US9918093B2
Title: Video encoding apparatus, video decoding apparatus, and video decoding method for performing intra-prediction based on directionality of neighboring block.
Patent number / application: US9918093B2; application US15/447,055; pre-grant publication US20170180739A1.
Inventors: Je Chang Jeong, Soon Jong Jin, Sang Jun Park, Hyuk Lee.
Assignee: Original assignee ARISCALE Inc.; current assignee listed as Ideahub Inc. The record shows a 2018-06-21 assignment from ARISCALE Inc. to IDEAHUB INC. (assignment data, not a legal conclusion).
Key dates (as listed; the source labels priority/expiration as assumptions):
- Priority date: 2009-12-30
- Filing date: 2017-03-01
- Publication of US20170180739A1: 2017-06-22
- Grant/publication of US9918093B2: 2018-03-13
- Anticipated expiration: 2030-12-23
- Legal status: Active
Purpose and plain-language scope: The patent concerns video compression. Per the supplied text, the invention relates to a video encoding apparatus, video decoding apparatus, and video decoding method that perform intra-prediction based on the directionality of a neighboring block. In plain terms, when encoding or decoding a current block, the prediction direction used for a neighboring block informs the intra-prediction applied to the current block. The excerpt's classification and prior-art keywords (e.g., "intra prediction," "current block," "prediction mode," "mode associated," H04N19/593—predictive coding involving spatial prediction) are consistent with that focus. The definitions section begins, "Example embodiments of the present invention relates to a video compression meth[od]…" (truncated in the excerpt).
Source: https://patents.google.com/patent/[US9918093](/patent/US9918093)/en
What the excerpt does not establish: The supplied text is excerpted, not the full specification or claims. It does not provide claim language, the detailed intra-prediction method steps, encoder/decoder architecture, or figures. Related-family members and later continuations are listed by number only. Nothing here establishes validity, enforceability, claim scope, or litigation; the source itself notes the family has litigation but provides no details. Dates and legal status are expressly flagged by the source as assumptions.
Generated 10/1/2026, 9:52:34 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)
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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.