Invalidity dossier
US 9526864
Retraction and aspiration device for treating embolism and associated systems and methods
Current assignee: Stryker Corp
Added 9/23/2026, 6:27:51 PM
Active provider: DeepSeek · deepseek-flash
Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Patent Overview — US 9,526,864 B2
Title: Retraction and aspiration device for treating embolism and associated systems and methods
Patent number: US9526864B2
Application number: US14/735,110 (filed 2015-06-09)
Publication date (grant): 2016-12-27
Earlier publication: US20150352325A1 (published 2015-12-10)
Priority date: 2014-06-09
Inventor: Richard Quick
Original assignee: Inceptus Medical LLC
Current assignee (as listed): Inari Medical Inc (assignment recorded 2018-04-27, assignor Inceptus Medical LLC)
Anticipated expiration (as listed): 2035-06-09
Legal status (as listed): Active
Purpose and plain-language scope
The supplied text identifies this as a retraction and aspiration device for treating embolism, with related systems and methods. The listed prior-art keywords — "treatment device," "clot," "actuation mechanism," "engagement members," and "catheter" — indicate a catheter-based clot treatment device having engagement members for engaging clot and an actuation mechanism, with aspiration and retraction functions. The classification data place it in catheter technology (A61M25/00 and A61M25/01 subgroups, including steering/advancing means) and in surgical instruments for removing obstructions in blood vessels, specifically gripping devices such as loops or baskets for gripping calculi or similar obstructions (A61B17/221).
Beyond these labels and classifications, the excerpt does not set out the claims, detailed description, or drawings in legible form, so the precise structural limitations, components, and claimed methods are not established by this text.
What the excerpt does not establish
- The specific claims, claim language, or claim count.
- The detailed structure, materials, dimensions, or method steps of the device.
- Any prior-art references, prosecution history, or validity determinations.
- Any litigation, licensing, or ownership facts beyond the recorded assignments listed.
- Whether the "Active" status or anticipated expiration reflects a legal conclusion (the source itself states these are assumptions, not legal conclusions).
Source: https://patents.google.com/patent/US9526864/en
Note: Only the supplied patent text was used; no external research was performed.
Generated 10/1/2026, 9:42:45 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.