Invalidity dossier
US 11000682
Hemostasis valves and methods of use
Current assignee: Stryker Corp
Added 9/23/2026, 4:49:52 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 — US11000682B2
Title: Hemostasis valves and methods of use
Patent number: US11000682B2 | Application: US16/117,519 | Publication: US20190070401A1
Inventors: Benjamin E. Merritt, John C. Thress, Paul Lubock
Assignee: Inari Medical, Inc. (original and current assignee as listed)
Dates: Priority date 2017-09-06; filing date 2018-08-30; granted/publication date 2021-05-11. Google Patents lists legal status as active with adjusted expiration 2038-11-02.
Purpose: The patent addresses drawbacks of existing hemostasis valves used with catheters in minimally invasive surgery. Catheters are equipped with hemostasis valves that seal or selectably seal catheter lumens — both when a tool extends through the valve and when a tool is removed. The patent states some valves may not seal adequately for all interventional applications or tools, and some are complicated to operate, potentially increasing surgical complexity or reducing patient safety (e.g., bleeding, infection, other complications). It seeks new and improved hemostasis valves and methods of use.
Plain-language scope: The valve includes a tubular elongate member (described as a pliable, compliant polymer tube) with a first end, second end, and a central lumen. An active tensioning mechanism — including at least one filament extending at least partially around the elongate member — is coupled to the elongate member and is moveable between a first configuration (lumen constricted and sealed) and a second configuration (lumen open), with manual intermediate positions possible. A reinforcement structure (e.g., a braided mesh) extends along at least part of the elongate member, positioned between the filament and the elongate member, and is coupled near both ends but not between them in some embodiments. An actuator coupled to the filament controls filament movement; two tensioning mechanisms may operate in opposite directions. The stated benefit is sealing around a wide range of tool sizes and shapes, including multiple tools simultaneously, and maintaining a seal under vacuum aspiration.
Not established by this excerpt: The full claim set, dependent-claim details, exact embodiment figures, and the complete specification text are omitted; the excerpt therefore does not establish the precise legal scope of any claim. Litigation, ownership transfers, validity, and prior art were not examined.
Source: https://patents.google.com/patent/[US11000682](/patent/US11000682)/en
Generated 10/1/2026, 9:44:08 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
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Obviousness
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Extensions
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Derivative works
Defensive disclosure: derivative variations of each claim designed to render future incremental improvements obvious or non-novel.