Invalidity dossier
US 8690816
Implantable flow connector
Current assignee: Bioconnect Systems Inc
Added 9/23/2026, 2:31:36 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 — US8690816B2
Title: Implantable flow connector
Patent number: US8690816B2
Application number: US12/185,810
Assignee/current assignee (per listing): Bioconnect Systems Inc
Inventors: Adam Dakin, Michael Dugery, Todd Polk, Richard Briganti, Michael Paris, Nicholas Gately, Zaw N. Win
Priority date (as listed): 2007-08-02
Filing date: 2008-08-04
Publication date: 2014-04-08
Legal status (as listed): Active, adjusted expiration 2030-04-10
Source: https://patents.google.com/patent/[US8690816](/patent/US8690816)/en
Purpose (plain language): The excerpt's definitions section describes the invention as relating generally to implantable medical devices and, more particularly, to implantable flow connectors. It explains the bodily context: mammals have tissue-enclosed body spaces, including body conduits (blood vessels, lymph and tear ducts, bowels, urethra, etc.) with a lumen carrying fluid, and body reservoirs (stomach, bladder, gall bladder, lymph nodes, etc.) that retain fluid. It discusses atherosclerosis causing partial or complete arterial occlusion, restricted blood flow, and ischemic consequences, and describes artery bypass graft procedures in which a graft vessel is joined to an obstructed vessel by anastomosis at an arteriotomy site. It also discusses other anastomosis indications, including side-to-side anastomoses, "arterializing" a vein, and creation of arteriovenous (AV) fistulas—for example for hemodialysis vascular access, most commonly in the upper extremity—and for connecting major vessels such as the aorta and vena cava in chronic obstructive pulmonary disease (COPD) patients. Patency is described as important to bypass/AV fistula success, with compromise from technical, biomechanical, or pathophysiological causes, including poorly achieved anastomoses, leakage, thrombus, and stenosis, making anastomosis formation a critical, precision-requiring procedure.
Classifications listed: A61B17/11, A61B2017/1107, A61B2017/1135, A61M27/002, A61M39/10, A61B17/12009.
What the excerpt does not establish: The supplied text does not include the claims, detailed description, drawings, or a full list of cited prior art. It does not establish the specific structural scope of the connector, any actual validity, enforceability, or infringement position, or the accuracy of the listed legal status, dates, and assignee (which the source itself flags as assumptions, not legal conclusions).
Generated 10/1/2026, 9:52:14 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
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.