Invalidity dossier
US 6112239
System and method for server-side optimization of data delivery on a distributed computer network
Current assignee: Intervu Inc
Added 9/21/2026, 10:31:30 AM
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 6,112,239 A
Title: System and method for server-side optimization of data delivery on a distributed computer network
Patent number: US 6,112,239 A
Application number: US 08/878,385
Inventors: Brian Kenner; Kenneth W. Colby; Robert N. Mudry
Original/current assignee: Intervu, Inc.
Priority/filing date: 1997-06-18
Publication (grant) date: 2000-08-29
Legal status (as listed): Expired – Lifetime; anticipated expiration 2017-06-18 (source notes legal status is an assumption, not a legal conclusion)
Purpose: The patent relates to distributed data storage and retrieval—specifically letting a user obtain network performance information for a dynamic, distributed multipurpose network, then using that information to identify and select optimum delivery sites or servers for receiving computer data, particularly multimedia content. Selection aims to increase network capacity, distribute server load, and reduce transmission delays between server and user. The background notes that multimedia files (e.g., video, roughly 10 MB to 10 GB) must be delivered at fast, constant speeds, and that attempts to solve associated problems included spreading popular content across "mirror sites."
Plain-language scope: Described as server-side optimization of data delivery. In operation, the system gathers network performance data and applies it to choose among candidate delivery sites/servers for delivering a requested file to a user. The excerpt provided does not include the claims, so the precise scope of the granted monopoly cannot be stated from this text alone.
Classifications (excerpt): H04L67/1001, /1004, /1008, /101, /1021, /1038, /1014, /1023, /1029—server selection and load balancing based on server parameters, network conditions, locations, request content, hashing, and server state via a load balancer.
What this excerpt does not establish: It does not provide claim language, the detailed description, enumerated prior-art references, prosecution history, or the substance of the related family members (e.g., WO1998058315A1, EP0990205B1, JP4968975B2, CA2294149A1, CN1109298C, and continuations US6799221B1, US7366793B2). It also does not establish litigation, validity, or ownership-transfer facts.
Generated 10/1/2026, 10:01:33 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
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Obviousness
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Extensions
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Derivative works
Defensive disclosure: derivative variations of each claim designed to render future incremental improvements obvious or non-novel.