Invalidity dossier
US 9566009
Partial aortic occlusion devices and methods for cerebral perfusion augmentation
Current assignee: Zoll Circulation Inc
Added 9/21/2026, 5:36:22 AM
Active provider: DeepSeek · deepseek-flash
Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
US 9,566,009 B2 — Patent Overview
Title: Partial aortic occlusion devices and methods for cerebral perfusion augmentation
Patent number: US 9,566,009 B2
Application number: US 13/925,401 (published as US 2013/0281869 A1)
Filing date: 2013-06-24
Publication (grant) date: 2017-02-14
Priority date (as listed, an assumption and not a legal conclusion): 2001-04-24
Inventor(s): Denise R. Barbut; Peter T. Keith; Steven W. Berhow; Jon P. St. Germain
Assignee (current and original, as listed): Zoll Circulation Inc
Legal status (as listed): Expired – Fee Related; adjusted expiration 2035-06-02. The source states legal status is an assumption and not a legal conclusion.
Purpose: According to the source's own indexing, the invention relates to partial aortic occlusion used to augment cerebral perfusion. Its abstract-level concepts include blood circulation, brain ischemia, cerebral ischemia, cerebral infarction, spinal cord, aortic aneurysm, angioplasty, and neuroprotective agents. Related versions cited in the source include US 10,335,152 B2, which claims priority from the same 2017-02-14 date.
Plain-language scope (from the source's claim/description terminology): The claimed subject matter centers on an elongate member with proximal and distal portions and an expandable member, positioned to partially occlude the aorta—specifically the thoracic aorta—at a location related to the subclavian artery. Blood pressure and upstream pressure monitoring, a monitoring device, and a mechanism for reducing or preventing device migration are also reflected in claim terminology. The disclosed uses include treating stroke, cerebral ischemia, and cardiac and hemorrhagic shock, with optional cooling, hypothermia, and agent delivery such as vasoconstrictors or neuroprotective agents.
What this excerpt does not establish:
- It does not reproduce the full claims, specification, or drawings.
- It does not establish litigation, ownership transfers, validity, patentability, or the content or dates of prior art.
- The keyword-frequency word clouds and "prior art keywords" are source metadata, not legal conclusions.
- Priority date, assignee listing, and legal status are expressly flagged in the source as assumptions.
Generated 10/1/2026, 10:02:34 PM
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Litigation summary
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Proceedings on file (0)
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PTAB challenges
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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.