Invalidity dossier
US 6772211
Content-aware web switch without delayed binding and methods thereof
Current assignee: International Business Machines Corp
Added 9/23/2026, 8:44:59 PM
Active provider: DeepSeek · deepseek-v4-flash
Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview — US6772211B2
Title: "Content-aware web switch without delayed binding and methods thereof"
Patent number / application: US6772211B2; application US10/136,986, filed 2002-04-30.
Priority date: 2001-06-18 (identified in the source as an assumption, not a legal conclusion).
Publication date (grant): 2004-08-03. A pre-grant publication, US20020194350A1, issued 2002-12-19.
Inventors: Leonard L. Lu, Deh-phone K. Hsing, Bo-Chao Cheng, Tsong-Ho Wu.
Assignee: Original assignee Transtech Networks USA Inc. The source lists current assignee International Business Machines Corp (with reassignments to SOFTSHIELD LLC, OPEN INVENTION NETWORK, LLC, and IBM recorded in the assignment data). As instructed, no ownership analysis is offered.
Status: Expired – Fee Related; "expires 2022-03-02" per the source's adjusted-expiration entry.
Purpose and plain-language scope (per supplied text): The patent concerns a content-aware "web switch" that avoids delayed binding. The supplied excerpt defines the application switch as receiving packets from clients on the Internet, examining packet content, and, based on that content, prioritizing — with FIG. 3 noted as illustrating the various headers of an IP packet. A definitions section and prior-art keywords (server, servers, packet, group, application) are present, but the excerpted text cuts off mid-sentence at "prioritizes the," so the full routing/prioritization mechanism is not established here.
Classifications (as listed): H04L47/* (traffic control, flow/congestion control, priorities), H04L45/74 (address processing for routing), H04L63/08, H04L63/101 (authentication; access control lists), and H04L67/1001–1019 (server selection for load balancing, including based on request content, round robin, and random/heuristic selection).
Source: https://patents.google.com/patent/[US6772211](/patent/US6772211)/en
What the excerpt does not establish: It does not supply the claims, the full written description, the described "delayed binding" comparison, the specific server-selection algorithms, or the content fields examined. It also provides no litigation, validity, or prior-art findings.
Generated 10/1/2026, 9:41:13 PM
Cases on file (0)
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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.