Invalidity dossier
US 7801117
Fibre channel switching fabric router
Current assignee: Avago Technologies International Sales Pte Ltd
Added 9/23/2026, 4:16:12 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 — US7801117B2
Title: Fibre channel switching fabric router
Patent number / application: US7801117B2; application US11/147,053, filed 2005-06-06.
Inventors / assignees (as listed): Inventor Stuart B. Berman. Original assignee Emulex Design and Manufacturing Corp; current assignee listed as Avago Technologies International Sales Pte Ltd. The record also shows reassignments to Arcxel Technologies, Inc., Vixel Corporation, and Emulex Design & Manufacturing Corporation, plus later transfers.
Key dates (as listed): Priority date 1997-02-18 (noted as an assumption, not a legal conclusion); filing 2005-06-06; publication of US20050286551A1 on 2005-12-29; grant/publication of US7801117B2 on 2010-09-21; adjusted expiration 2019-02-01; status "Expired – Fee Related."
Purpose and plain-language scope (from the supplied text): The patent concerns a router for a Fibre Channel switching fabric. The excerpt identifies "route," "port," "fibre channel," "fabric," and "frame" as prior-art keywords, indicating subject matter directed to routing frames among ports within a Fibre Channel fabric. Classifications include packet switching elements (H04L49/00, H04L49/30), routing/path finding and fault recovery (H04L45/00, H04L45/28), address table lookup/filtering (H04L45/74, H04L45/745), flow control and QoS (H04L47/00 et seq.), and optical fault recovery (H04B10/03). No claim text, specification, or abstract is included in the excerpt, so the precise claimed scope cannot be stated from this material.
Source: https://patents.google.com/patent/[US7801117](/patent/US7801117)/en
What the excerpt does not establish: It contains no claims, abstract, or detailed description, so the exact inventive scope, limitations, and embodiments are not verifiable here. It also does not establish the accuracy of the priority date or assignee listings, the legal status or expiration, the content or dates of related applications (e.g., US12/886,463; US13/622,157), or any litigation/ownership facts beyond the reassignment entries shown. Family litigation is flagged by a third-party link, but no details are provided.
Generated 10/1/2026, 9:51:00 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)
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.