Invalidity dossier
US 7013322
Current assignee: Sandpiper CDN, LLC
Added 8/26/2026, 12:48:56 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 7,013,322 B2
Title: "System and method for rewriting a media resource request and/or response between origin server and client"
Patent number / application: US 7,013,322 B2, application US09/770,645, filed 2001-01-29.
Dates: Priority date 2000-01-28; publication of US20020040366A1 on 2002-04-04; granted 2006-03-14; status listed as "Expired - Lifetime," adjusted expiration 2023-01-17.
Inventor: Nils B. Lahr. Original assignee: Wiltel Communications Group LLC. The source lists current assignees as Credit Suisse AG (Cayman Islands Branch) and Sandpiper CDN LLC, and records later reassignments including WilTel, Level 3 Communications, LLC, and Sandpiper CDN, LLC.
Purpose (from the source): The invention "relates to a distributed network which is capable of dynamically changing media resource request metafiles, as well as the responses to those media resource requests by media servers in the network, to provide more efficient content delivery in the network."
Plain-language scope: Per the title, the patent concerns rewriting a media resource request and/or the corresponding response as it passes between an origin server and a client—i.e., intermediary modification of request/response content to improve delivery in a distributed network. The source's "prior art keywords" list (data, server, response, network, resource request) is consistent with this framing. Classifications include G06F16/955 and G06F16/9566 (URL-specific retrieval), G06F16/9574 (caching/browsing optimisation), and H04L67/56-series (proxy services, including data redirection, intercepted application data, and intermediate caching), which situate the disclosure in proxy/intermediary handling of web resources.
What the excerpt does not establish: The supplied text contains no claims, no detailed description, no drawings text, and no abstract beyond the single "Definitions" paragraph quoted above. It therefore does not establish the actual claimed scope, the specific rewriting steps or data structures, any embodiment details, or the identity/number of figures. The assignee listings are expressly noted as possibly inaccurate and not legally analyzed. The excerpt also does not establish litigation outcomes, validity, ownership enforceability, or prior-art effect; the underlying source should be consulted for the omitted text.
Generated 10/1/2026, 10:03:56 PM
Cases on file (1)
Group view →Specific litigation cases in our database that name US patent 7013322. The free-form analysis below may also discuss cases beyond this list.
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.
Current assignee: Sandpiper CDN, LLC
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.
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This patent in court (1)
1 tracked lawsuit name US 7013322.