Invalidity dossier
US 8784434
Added 9/23/2026, 2:27:38 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 8,784,434 B2
Title: "Methods and apparatus for treating embolism"
Patent number / application: US 8,784,434 B2; Application No. US 13/843,742; published as US 2014/0155908 A1.
Inventors: Robert F. Rosenbluth, Brian J. Cox, Paul Lubock.
Assignee: Original assignee Inceptus Medical LLC; reassigned to INCEPTUS MEDICAL, LLC (2014-04-21) and later to Inari Medical, Inc. (2018-04-27). Current assignee listed: Inari Medical Inc.
Key dates: Priority date 2012-11-20; filing date 2013-03-15; publication 2014-05-06 (US 2014/0155908 A1); grant/publication date 2014-07-22; anticipated expiration 2033-03-15. Legal status listed as Active.
Purpose: The patent relates to treating embolism, with the prior-art keywords explicitly including "clot," "treatment device," "expanding," "radial expansion," and "pulmonary embolism." Classification tags point to surgical instruments for removing obstructions in blood vessels, gripping instruments (including those with inflatable gripping elements and loops or baskets), atherectomy-type devices with radially expandable cutting or abrading elements, and lung operations.
Plain-language scope (from supplied text): The disclosure concerns a clot-treatment device that expands radially to engage and remove clot material, aimed at embolism — including pulmonary embolism — within blood vessels.
Related family members listed: PCT/US2013/071101 (WO 2014081892 A1), US 14/646,358 (US 10,004,531 B2), US 14/288,778 (US 8,968,330 B2), US 14/602,014 (US 9,408,620 B2), US 15/159,989 (US 9,717,519 B2), US 15/396,036 (US 10,335,186 B2), US 15/665,326 (US 10,588,655 B2), US 15/949,350 (US 10,709,471 B2), US 16/913,073 (US 11,648,028 B2), and others.
What this excerpt does not establish: No claims are included in the supplied text, so the exact claim scope is not shown. No detailed description, drawings, embodiments, or dimensions are provided; the purpose and scope above rest only on the title, classifications, and prior-art keywords. No prior-art references or examiner citations appear. Legal-status and expiration entries are expressly noted in the source as assumptions, not legal conclusions, and Google states assignee listings may be inaccurate. The excerpt also omits any information on litigation, validity, or ownership transfers beyond the recorded assignments above.
Generated 10/1/2026, 9:52:16 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
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.