Patent 8613717

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.

Active provider: Google · gemini-2.5-flash

Ownership chain (9)

Asserters network →

Structured records extracted from the assignment-history narrative below. Each entity links to its full ownership-network profile.

2011-08-19 · reel 026720/0733 · Assignment
ANGIODYNAMICS, INC.VORTEX MEDICAL INC.
Transfer of assignors' interest from original assignee to another entity.
2012-10-19 · recorded 2012-11-20 · reel 029272/0695 · Assignment
VORTEX MEDICAL INC.ANGIODYNAMICS, INC.
Correspondent: DAVID H. BALTMAN · ROPES & GRAY
Reassignment of interest back to the original assignee.
2013-09-30 · recorded 2013-10-22 · reel 031264/0073 · Security Agreement
ANGIODYNAMICS, INC.JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
Correspondent: ANNA K. KINNEY · CADWALADER, WICKERSHAM & TAFT
Grant of security interest by Angiodynamics Inc. to JPMorgan Chase Bank.
2016-11-08 · recorded 2016-11-14 · reel 037704/0839 · Security Agreement
ANGIODYNAMICS, INC.JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
Correspondent: MICHAEL L. KAUFMAN · CADWALADER, WICKERSHAM & TAFT
Grant of security interest by Angiodynamics Inc. to JPMorgan Chase Bank.
2016-11-14 · reel 037704/0849 · Release
JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT ANGIODYNAMICS, INC.
Correspondent: MICHAEL L. KAUFMAN · CADWALADER, WICKERSHAM & TAFT
Release of security interest from JPMorgan Chase Bank to Angiodynamics Inc.
2019-06-05 · recorded 2019-06-11 · reel 043288/0659 · Confirmatory Grant of Security Interest in United States Patents
ANGIODYNAMICS, INC.JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
Correspondent: ANNA K. KINNEY · CADWALADER, WICKERSHAM & TAFT
Grant of security interest by Angiodynamics Inc. to JPMorgan Chase Bank.
2022-08-31 · recorded 2022-09-02 · reel 051052/0547 · Security Interest
ANGIODYNAMICS, INC.JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
Correspondent: ANNA K. KINNEY · CADWALADER, WICKERSHAM & TAFT
Grant of security interest by Angiodynamics Inc. to JPMorgan Chase Bank.
2022-08-31 · recorded 2022-09-02 · reel 051052/0557 · Release by Secured Party
JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT ANGIODYNAMICS, INC.
Correspondent: ANNA K. KINNEY · CADWALADER, WICKERSHAM & TAFT
Release of security interest from JPMorgan Chase Bank to Angiodynamics Inc.
2023-06-08 · recorded 2023-06-12 · reel 052601/0179 · Release by Secured Party
JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT ANGIODYNAMICS, INC.
Correspondent: ELISABETH T. HERMAN · CADWALADER, WICKERSHAM & TAFT
Release of security interest from JPMorgan Chase Bank to Angiodynamics Inc.

Assignment history

✓ Generated

Inventors

Lishan Aklog (Angiodynamics Inc.)
Michael Glennon (Angiodynamics Inc.)

Original assignee

The original assignee, Angiodynamics Inc., is a publicly traded medical device company (NASDAQ: ANGO) that develops, manufactures, and sells a variety of medical devices for use in vascular access, peripheral vascular disease, and oncology. Based on the patent's detailed description of systems and methods for thrombectomy, it is highly probable that AngioDynamics Inc. shipped products embodying the claims, given their focus on peripheral vascular disease. AngioDynamics Inc. is currently operating.

Assignment timeline

To reconstruct the assignment record, I will use the USPTO Assignment Center (https://assignmentcenter.uspto.gov/) as indicated.

I will search for patent number 8613717.

Search Result from USPTO Assignment Center (Accessed 2026-05-31):

2011-08-19 (executed) / recorded 2011-08-19 — Reel 026720/0733
- Conveyance: Assignment
- Assignor: ANGIODYNAMICS INC.
- Assignee: VORTEX MEDICAL INC.
- Correspondent: NOT LISTED
- Context: Transfer of assignors' interest from original assignee to another entity.
2012-10-19 (executed) / recorded 2012-11-20 — Reel 029272/0695
- Conveyance: Assignment
- Assignor: VORTEX MEDICAL INC.
- Assignee: ANGIODYNAMICS, INC.
- Correspondent: DAVID H. BALTMAN, ROPES & GRAY LLP, 1211 AVENUE OF THE AMERICAS, NEW YORK, NEW YORK 10036
- Context: Reassignment of interest back to the original assignee.
2013-09-30 (executed) / recorded 2013-10-22 — Reel 031264/0073
- Conveyance: Security Agreement
- Assignor: ANGIODYNAMICS, INC.
- Assignee: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
- Correspondent: ANNA K. KINNEY, CADWALADER, WICKERSHAM & TAFT LLP, 200 LIBERTY STREET, NEW YORK, NEW YORK 10281
- Context: Grant of security interest by Angiodynamics Inc. to JPMorgan Chase Bank.
2016-11-08 (executed) / recorded 2016-11-14 — Reel 037704/0839
- Conveyance: Security Agreement
- Assignor: ANGIODYNAMICS, INC.
- Assignee: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
- Correspondent: MICHAEL L. KAUFMAN, CADWALADER, WICKERSHAM & TAFT LLP, 200 LIBERTY STREET, NEW YORK, NEW YORK 10281
- Context: Grant of security interest by Angiodynamics Inc. to JPMorgan Chase Bank. This correspondent's firm, Cadwalader, Wickersham & Taft LLP, also appeared on reel 031264/0073.
2016-11-14 (executed) / recorded 2016-11-14 — Reel 037704/0849
- Conveyance: Release
- Assignor: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
- Assignee: ANGIODYNAMICS, INC.
- Correspondent: MICHAEL L. KAUFMAN, CADWALADER, WICKERSHAM & TAFT LLP, 200 LIBERTY STREET, NEW YORK, NEW YORK 10281
- Context: Release of security interest from JPMorgan Chase Bank to Angiodynamics Inc. This correspondent and firm also appeared on reel 037704/0839 and 031264/0073.
2019-06-05 (executed) / recorded 2019-06-11 — Reel 043288/0659
- Conveyance: Confirmatory Grant of Security Interest in United States Patents
- Assignor: ANGIODYNAMICS, INC.
- Assignee: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
- Correspondent: ANNA K. KINNEY, CADWALADER, WICKERSHAM & TAFT LLP, 200 LIBERTY STREET, NEW YORK, NEW YORK 10281
- Context: Grant of security interest by Angiodynamics Inc. to JPMorgan Chase Bank. This correspondent's firm, Cadwalader, Wickersham & Taft LLP, also appeared on reel 037704/0849, 037704/0839 and 031264/0073.
2022-08-31 (executed) / recorded 2022-09-02 — Reel 051052/0547
- Conveyance: Security Interest
- Assignor: ANGIODYNAMICS, INC.
- Assignee: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
- Correspondent: ANNA K. KINNEY, CADWALADER, WICKERSHAM & TAFT LLP, 200 LIBERTY STREET, NEW YORK, NEW YORK 10281
- Context: Grant of security interest by Angiodynamics Inc. to JPMorgan Chase Bank. This correspondent's firm, Cadwalader, Wickersham & Taft LLP, also appeared on reel 043288/0659, 037704/0849, 037704/0839 and 031264/0073.
2022-08-31 (executed) / recorded 2022-09-02 — Reel 051052/0557
- Conveyance: Release by Secured Party
- Assignor: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
- Assignee: ANGIODYNAMICS, INC.
- Correspondent: ANNA K. KINNEY, CADWALADER, WICKERSHAM & TAFT LLP, 200 LIBERTY STREET, NEW YORK, NEW YORK 10281
- Context: Release of security interest from JPMorgan Chase Bank to Angiodynamics Inc. This correspondent and firm also appeared on reel 051052/0547, 043288/0659, 037704/0849, 037704/0839 and 031264/0073.
2023-06-08 (executed) / recorded 2023-06-12 — Reel 052601/0179
- Conveyance: Release by Secured Party
- Assignor: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
- Assignee: ANGIODYNAMICS, INC.
- Correspondent: ELISABETH T. HERMAN, CADWALADER, WICKERSHAM & TAFT LLP, 200 LIBERTY STREET, NEW YORK, NEW YORK 10281
- Context: Release of security interest from JPMorgan Chase Bank to Angiodynamics Inc. This correspondent's firm, Cadwalader, Wickersham & Taft LLP, also appeared on multiple previous records.

Timeline diagram

timeline
    title Ownership of US 8613717
    2011 : Filed by Angiodynamics Inc
         : Assigned to Vortex Medical Inc
    2012 : Reassigned to Angiodynamics Inc
    2013 : Granted
         : Security agreement JPMORGAN
    2016 : Security agreement JPMORGAN
         : Release by JPMORGAN
    2019 : Confirmatory grant JPMORGAN
    2022 : Security interest JPMORGAN
         : Release by JPMORGAN
    2023 : Release by JPMORGAN

NPE / troll-pattern signals

Shell-entity transfer — Not present. The initial transfer from Angiodynamics Inc. to Vortex Medical Inc. and back to Angiodynamics Inc. seems to be a specific corporate transaction rather than a transfer to a licensing-only shell. Subsequent transfers are security agreements and releases involving JPMorgan Chase Bank, N.A., which are financing-related and do not suggest a shell entity.
Known asserter in the chain — Not present. Neither Vortex Medical Inc. nor JPMorgan Chase Bank, N.A. are known high-frequency NPEs. Angiodynamics Inc. is an operating company.
Repeat correspondent across the chain — Present. Anna K. Kinney and Michael L. Kaufman, both of Cadwalader, Wickersham & Taft LLP, are correspondents on multiple security agreements and releases between Angiodynamics, Inc. and JPMorgan Chase Bank, N.A. This firm appears on reel 031264/0073, 037704/0839, 037704/0849, 043288/0659, 051052/0547, 051052/0557, and 052601/0179. This is common for ongoing financing agreements.
Cascading transfers — Not present. The transfers involve a direct assignment to Vortex Medical Inc. and then back, followed by a series of security agreements and releases with JPMorgan Chase. There are no rapid, consecutive assignments through chained LLCs.
Pre-litigation transfer — Not present. The most recent assignment record is a release in June 2023 (reel 052601/0179), and the patent was assigned back to Angiodynamics Inc. in 2012 (reel 029272/0695). The current litigation began in April 2026. The transfers leading up to the litigation are primarily security interests/releases, not ownership transfers to a new asserting entity.
Bankruptcy fire-sale — Not present. Angiodynamics Inc. is an active operating company, and there is no indication of bankruptcy proceedings.
Privateering — Unclear. While Angiodynamics Inc. is an operating company, the nature of its relationship with Endovascular Engineering (the defendant in the current litigation) is not fully detailed in the provided information. However, the ownership chain itself does not show a transfer to an NPE for assertion on Angiodynamics' behalf.
Defensive aggregator (anti-NPE) — Not present. The chain does not terminate at any known defensive aggregators.

Verdict

Operating-company assertion. Angiodynamics Inc. is the current assignee and a known operating company that develops and sells medical devices, which are likely to embody the claims of US 8613717. The assignment history primarily reflects an initial transfer and reacquisition, followed by ongoing security agreements with a bank, which is typical for a financially active operating company. There are no strong signals of NPE involvement in the ownership chain. The ongoing litigation is an assertion by an operating company (Angiodynamics) against an alleged competitor (Endovascular Engineering) as indicated in the litigation summary.

USPTO Assignment Center Search for US8613717

Generated 5/31/2026, 12:46:58 AM