Invalidity dossier
US 7099387
Context-adaptive VLC video transform coefficients encoding/decoding methods and apparatuses
Current assignee: Intel Corp
Added 9/23/2026, 12:24:01 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 7,099,387 B2
Title: Context-adaptive VLC video transform coefficients encoding/decoding methods and apparatuses
Patent number: US 7,099,387 B2
Application number: US 10/232,337
Inventors: Gisle Bjontegaard; Karl O. Lillevold
Original assignee: RealNetworks, Inc. (later recorded as assigned to Intel Corporation)
Priority date: 2002-03-22
Filing date: 2002-08-30
Publication date (grant): 2006-08-29
Status: Expired – Lifetime (adjusted expiration 2024-09-12)
Purpose (per the supplied text): The invention relates to the field of video encoding/decoding, specifically encoding transform coefficients of luma/chroma blocks of a macroblock of a picture, and decoding those encodings. Video delivery and rendering involve encoding/decoding to reduce data stored, retrieved, and/or transmitted.
Plain-language scope (from the excerpt): The patent describes a context-adaptive variable length coding (VLC) encoder for encoding transform coefficients of luma/chroma blocks of a macroblock, and a corresponding decoder. The encoder operates in stages illustrated by figures: encoding number of coefficients together with number of trailing one coefficients in a combined manner; encoding level measures of the transform coefficients; and encoding the number of zero coefficients interposed among non-zero coefficients together with their respective run lengths. A video device may incorporate both encoder and decoder, and an article of manufacture may carry a software implementation on a recordable medium.
Classifications noted: H04N19/13 (adaptive entropy coding, e.g., AVLC/CABAC), H04N19/18, H04N19/124, H04N19/176, H04N19/91, among others.
What the excerpt does not establish: The excerpt is partial — it omits the full text of claims, detailed description, and figures. It does not establish claim scope, validity, enforceability, inventorship disputes, or prior art beyond listed keywords. It does not establish any litigation. The listed assignees and legal status are expressly described in the source as assumptions, not legal conclusions. Details of the encoder/decoder algorithms beyond the figure captions and definitions are not established here.
Generated 10/1/2026, 9:53:39 PM
Cases on file (0)
Specific litigation cases in our database that name US patent 7099387. The free-form analysis below may also discuss cases beyond this list.
No cases on file mention this patent. Upload a CSV or add a case manually in Admin → Manage litigation cases.
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.