Invalidity dossier
US 9468033
Added 10/14/2026, 12:01:08 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 9,468,033 B2
Title: "Associated device discovery in IMS networks"
Assignee: Aylus Networks Inc. (listed as both current and original assignee).
Inventors: Shamim A. Naqvi, Prasad S. Dorbala, Ellis L. Wong, Mahesh N. Ganmukhi.
Key dates: Priority date 2005-06-24 (claimed from US 11/166,407); application US 13/276,744 filed 2011-10-19; published as US 2012/0036248 A1 on 2012-02-09; granted 2016-10-11; anticipated expiration 2025-06-24. Legal status shown: "Expired - Lifetime."
Purpose and plain-language scope: Per the source's Definitions section, the invention "generally relates to IP Multimedia Subsystem (IMS) networks and, more specifically, to IMS users that use (perhaps multiple) discovered user endpoint devices." The background explains that IMS networks support both voice and data services, and describes the legacy circuit-switched architecture (BTS, RAN, BSC, MSC, GMSC, PLMN/PSTN) alongside an overlay packet data network using a PCF, plus the disaggregation of the legacy switch into a soft switch controlling media gateway (MGW) components via MGCP. The prior-art keywords listed are: mobile device, session, devices, network, PAN. Classification spans H04W76/10–76/15 (connection setup/multiple links), H04L65/1016 (IMS), H04L67/146 (session markers), H04M7/123 (IMS-type packet networks), and H04W4/80 (short-range communication), among others. Related continuations (e.g., US 9,999,084; US 10,085,291; US 10,194,479; US 10,477,605; US 10,736,164; US 11,044,772; US 12,114,382) are noted as claiming priority to this family.
What the excerpt does not establish: The supplied text contains no claims, no detailed description of the discovery mechanism, no figures, and no named prior-art references. It therefore does not establish the specific claimed subject matter, the scope of any claim, or how "associated device discovery" is actually performed. (No litigation, ownership-transfer, validity, or prior-art research was performed, per instructions.)
Generated 10/14/2026, 12:01:47 PM
Cases on file (0)
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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
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Obviousness
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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.