Invalidity dossier

US 9647899

Framework supporting content delivery with content delivery services

Current assignee: Sandpiper CDN, LLC

Added 8/25/2026, 6:51:01 PM

At a glanceNo PTAB challenges1 lawsuit on fileasserted by Sandpiper CDN, LLC

Active provider: DeepSeek · deepseek-v4-flash

Patent summary

Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.

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Patent Overview — US9647899B2

Title: "Framework supporting content delivery with content delivery services"

Patent number / application: US9647899B2; Application US13/714,760; Publication US20140172952A1.

Inventors: Lewis Robert Varney; Laurence R. Lipstone; William Crowder; Andrew Swart; Christopher Newton.

Assignee (per supplied text): Original assignee Level 3 Communications LLC; current assignee listed as Sandpiper CDN LLC.

Key dates (as stated, and characterized in the source as assumptions, not legal conclusions): Priority date 2012-12-13; filing date 2012-12-14; publication date 2017-05-09; adjusted expiration 2033-07-19; legal status "Active." Related family filings noted include PCT/US2013/074824 (WO2014093717A1), EP2932401B1, CA2894873C, and HK1215817B.

Purpose / plain-language scope: The patent concerns a "framework supporting content delivery," organized around "content delivery services." The only substantive technical vocabulary the supplied excerpt preserves is limited: the listed prior-art keywords are services, service, information, control, reducer. Beyond the title, assignee/inventor fields, dates, and those keywords, the excerpt does not supply the abstract, specification, or claims. Accordingly, no plain-language description of how the framework operates—what a "reducer" does, how services are composed, or how control and information flow—can be responsibly stated from this text alone.

Source: https://patents.google.com/patent/[US9647899](/patent/US9647899)/en (fetched 2026-10-01).

What the excerpt does not establish:

  • No claim language, abstract, or detailed description is present, so the metes and bounds of the claimed invention are unknown.
  • No description of the "content delivery services" architecture or "reducer" functionality is provided.
  • No prior art is identified or analyzed.
  • Legal status, expiration, and priority are expressly stated in the source as assumptions, not legal conclusions; the assignee lists are likewise stated as possibly inaccurate.
  • Nothing regarding litigation, validity, enforceability, or ownership transfers is established here, and no such matters are addressed.

Generated 10/1/2026, 10:04:05 PM

Cases on file (1)

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Specific litigation cases in our database that name US patent 9647899. The free-form analysis below may also discuss cases beyond this list.

Litigation summary

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Proceedings on file (0)

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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.

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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.

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Prior art

Earlier patents, publications, and products that may anticipate or render the claims unpatentable.

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Obviousness

Combinations of prior art that suggest the claimed invention would have been obvious under 35 U.S.C. § 103.

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Extensions

Patent term adjustments, term extensions, continuations, divisionals, family members, and expiration dates.

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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 9647899.