Invalidity dossier
US 11785275
Added 10/29/2026, 12:00:43 PM
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Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview — US 11785275 B2
Title: System and method for receiving a television signal
Patent number / application: US 11785275 B2, application US 17/956,889
Assignee: Entropic Communications LLC (listed as both current and original assignee; the source notes assignee listings may be inaccurate)
Inventors: Madhukar Reddy, Curtis Ling, Tim Gallagher
Key dates: Priority date 2009-04-17 (stated as an assumption, not a legal conclusion); application filed 2022-09-30; publication of US 20230068514 A1 on 2023-03-02; granted 2023-10-10; anticipated expiration 2030-04-19; legal status listed as Active.
Classification: Primarily H04N21/4263 (client-device tuning arrangements, e.g. two tuners), with additional classifications in software-defined radio (H04B1/0003, H04B1/0007, H04B1/0014) and H04N21/4382 (demodulation/channel decoding). The source's keyword listing emphasizes "channels," "digital," "signal," "ADC," and "frequency," and its description index references ADCs, spectrum, and sampling.
Plain-language scope (as far as the excerpt shows): The patent concerns receiving television signals in a client device such as a set-top box. Based on the classifications and indexed terms, the disclosed subject matter involves tuning arrangements (including multi-tuner configurations) and a signal path in which analog-to-digital conversion occurs at radio or intermediate frequency, with digital signal processing—including quadrature modulation/demodulation—performed in the digital domain, i.e., a software-defined-radio-style receiver architecture. No claim text is present in the excerpt, so the precise scope of the claims cannot be stated. A family member, US 20230068514 A1, is identified, and later applications (US 18/461,104 and US 19/033,880) claim priority to this filing.
What the excerpt does not establish: It contains no claim language, no abstract, no detailed description, and no drawings or reference numerals, so the specific apparatus/method steps, limitations, and embodiments cannot be summarized. Because the instructions limit this overview and the excerpt omits those sections, no assertions are made about what is specifically claimed versus merely disclosed. The excerpt also does not establish the accuracy of the priority date, assignee identity, legal status, or expiration estimate, each of which the source itself flags as an assumption.
Generated 10/29/2026, 12:00:49 PM
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Litigation summary
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Proceedings on file (0)
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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.