Invalidity dossier

US 8832297

Current assignee: DivX, LLC

Added 9/22/2026, 4:48:52 AM

At a glanceNo PTAB challenges3 lawsuits on fileasserted by DivX, LLC

Active provider: DeepSeek · deepseek-flash

Patent summary

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

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Patent Overview — US8832297B2

Title: Systems and methods for performing multiphase adaptive bitrate streaming

Patent number / application: US8832297B2; Application US13/339,992; Pre-grant publication US20130007297A1.

Inventors: Kourosh Soroushian, Auke van der Schaar, Jason Braness, William David Amidei.

Assignee: Original assignee Sonic IP LLC; current assignee listed as Divx LLC (the source lists Divx LLC's name).

Key dates (as stated in the source): Priority date 2011-06-29; filing date 2011-12-29; publication of US20130007297A1 on 2013-01-03; grant/publication of US8832297B2 on 2014-09-09. Anticipated expiration listed as 2031-12-29.

Purpose and plain-language scope: The patent concerns adaptive bitrate streaming carried out in multiple phases. The recurring terminology in the source ("playback device," "conditions," "streaming," "phase," "stream") indicates a scheme in which a playback device streams content and the streaming behavior changes across successive phases based on conditions. The classification entries describe monitoring of the downstream transmission path (e.g., bandwidth variations of a wireless network), adapting media to network and device capabilities, and responding to quality-of-service conditions—consistent with the title's adaptive bitrate approach.

Source: https://patents.google.com/patent/[US8832297](/patent/US8832297)/en

What the excerpt does not establish:

  • It contains no claims, abstract, or detailed description; therefore the specific claimed method steps, phase definitions, condition types, and independent/dependent claim scope cannot be determined from the supplied text.
  • It does not establish priority-chain details beyond the listed dates, nor the content or teachings of any cited prior art.
  • It does not establish the legal status as a conclusion—the source itself notes legal status is an assumption, not a legal analysis.
  • It does not establish the accuracy of the current-assignee listing; the source disclaims having performed any assignee analysis.
  • It does not establish any facts about litigation, ownership transfers, validity, or prior art; those are outside both the supplied text and this overview's scope.

Generated 10/1/2026, 9:54:24 PM

Cases on file (3)

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Specific litigation cases in our database that name US patent 8832297. The free-form analysis below may also discuss cases beyond this list.

Lawsuits filed per year

2020: 2 cases2'202021: 1 case'21
Cases asserting US 8832297, by filing year.

Litigation summary

Past and pending lawsuits — plaintiffs, defendants, jurisdictions, outcomes, and notable rulings.

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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: DivX, 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 (3)

3 tracked lawsuits name US 8832297.