Invalidity dossier
US 8285802
Internet-phone or smart phone with applications for managing and playing digital content, and a mobile device operating system supporting application programming interface
Current assignee: Flexiworld Technologies Inc
Added 9/24/2026, 1:41:52 AM
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: US8285802B2
Title: Internet-phone or smart phone with applications for managing and playing digital content, and a mobile device operating system supporting application programming interface.
Patent number: US8285802B2 (application US12/907,865; publication US20110034150A1).
Assignee: Flexiworld Technologies, Inc. (original and current assignee per the listing). Inventors: William Ho Chang and Christina Ying Liu.
Key dates: Priority date 2000-11-01; filing date 2010-10-19; publication date (grant) 2012-10-09; adjusted expiration 2022-04-04; legal status listed as "Expired – Fee Related."
Purpose and plain-language scope (per the supplied text): The title indicates the patent concerns an internet-phone or smart phone that runs applications for managing and playing digital content, together with a mobile device operating system that supports an application programming interface (API). The listed classifications point to subject matter involving audio/sound output and user interfaces (e.g., voice commands, touch screens, GUI interaction with menus and lists), digital output to print units (including client/server resource management, device discovery, and job translation to printer-ready format), and general data processing across multiple computers.
Put simply, the document's title, claim-classification tags, and "prior art keywords" (internet, output, phone, wireless, application) describe a mobile computing device whose operating system exposes an API enabling content-management and content-playback applications, with features extending to output operations such as printing. The excerpt also notes litigation flags: a worldwide family litigation entry and a Texas Eastern District Court case reference.
What the excerpt does not establish: The supplied text contains no claim language, no abstract, and no detailed description. It therefore does not establish the specific scope of any claim, the precise API functions, the content types, or how "managing and playing digital content" is implemented. It also provides no specification text, no figures, and no listed prior-art references beyond keyword tags. Classifications and keywords are indicative only and should not be read as claim limitations. Dates and status are presented as listings/assumptions, not legal conclusions.
Source: https://patents.google.com/patent/[US8285802](/patent/US8285802)/en
Generated 10/1/2026, 9:31:14 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.