Imperative Care, Inc. vs. Inari Medical, Inc. et al.

Explore the PTAB proceeding IPR2026-00169 filed by Imperative Care, Inc. on 2025-12-16. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2026-00169

Filing Date

2025-12-16

Accorded Filing Date

2025-12-16

Institution Decision Date

2026-06-02

Last Modified Date

2026-09-10

Proceeding Type

IPR

Termination Date

—

Trial Status

Trial Instituted

Parties & Counsel

Petitioner

Imperative Care, Inc.

Represented By

Stowell, Joshuaet al

Patent Owner / Respondent

Inari Medical, Inc. et al.

Represented By

Hamilton, Josephet al

Tribunal & Venue

Tribunal

Patent Trial and Appeal Board (USPTO)

Technology Center

TC 3700 - Mechanical Engineering & Manufacturing

Patent Information

1 Patent Involved

Respondent Application Number 18358837

Respondent Patent Number 12156669

External Links

Espacenet

Google Patents

Respondent Inventor Richard Quick et al

Respondent Tech Center TC 3700 - Mechanical Engineering & Manufacturing

Address and Attorney/Agent Information

103 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name ASHURST PERKINS COIE US LLP - SEA - PATENT-SEA

Customer Number 25096

Address P.O. BOX 1247, SEATTLE, WA, 98111-1247, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
30176	Michael Glenn	650-838-4495
31646	Kenneth Ohriner	310-788-3267
34047	Michael Wise	310-788-3210
36878	Chun Ng	206-359-800
37263	Robert Woolston	206-359-3259
38264	Paul Parker	206-287-3258
38708	David Laub	202-654-6280
38829	Stephen Bishop	206-359-3129
41131	Viola Kung	650-838-4457
42216	John Wechkin	206-359-3257
43312	Bing Ai	858-720-5707
43498	Susan Betcher	206-359-6088
45138	Mark Strickland	480-262-6882
50774	Rodger Carreyn	310-788-3225
51696	David Fournier	312-324-8643
51770	Joseph Hamilton	310-788-9900
52196	John Schnurer	858-720-5705
52283	Julia Thomas	650-868-9192
52354	Brandon White	202-654-6200
52571	Veronica Ascarrunz	202-434-1621
53683	Amanda Tessar	303-291-2357
54224	Karl Klassen	206-359-8000
54627	Bhaskar Kakarla	240-683-9579
54675	Aaron Poledna	206--35-9-8000
55369	Gene Lee	261-261-6825
55487	Joshua Nelson	208-343-3434
55595	Vinay Sathe	858-720-5736
55937	Babak Tehranchi	858-720-5734
56924	David St. John-Larkin	303-291-2300
57013	Thomas Yee	212-261-6845
58195	Kourtney Merrill	303-291-2388
60621	Alberto Araiza	650-838-4300
63210	Kevin Patariu	858-720-5726
63927	Xiaobing Zhang	917-528-3802
64379	Colin Fowler	650-838-4725
65002	Lara Dueppen	310-788-3349
65152	Stephen Brookman	602-351-8058
65488	Vikram Iyengar	412-352-9198
66019	Patrick Mckeever	858-720-5722
66122	Nicole Dunham	206-359-3042
66636	Andrew Dufresne	608-663-7460
67372	Yingli Wang	310-788-3348
67639	Courtney Prochnow	310-788-3284
68636	Miguel Bombach	858-720-5700
69424	Han Saem Hong	206-359-3125
71071	Kevin Kantharia	858-720-5738
71097	Linda Falcon	206-359-8000
71235	Andrew Pettit	650-838-4478
71689	Caroline Teichner	312-282-5588
72128	Lena Petrovic	510-517-4228
72167	Kyle Canavera	858-720-5782
72217	Fareid Asphahani	858-720-5700
72240	Karan Singh	212-261-6869
72316	Thomas Millikan	858-449-8162
72317	Joseph Reid	858-720-5764
72737	Allison Glasunow	206-949-0925
72766	Yun Lu	858-720-5732
73038	Sumedha Ahuja	202-654-6348
73049	Seok Jun Han	224-766-0217
73876	Anna Onley	773-960-2476
74399	Jacob Gober	206-359-3812
74407	Moeka Takagi	650-838-4494
74806	Dmitry Kagan	212-261-6821
74962	Jingyuan Huang	650-838-4448
74963	Daniel Jackstadt	206-359-3175
74974	Anni Siitonen	120-635-93594
75050	Steven Beigelmacher	206-359-8000
75363	Roderick O'Dorisio	303-291-2303
75568	Gautam Thatte	213-999-2054
75640	Xiaoyu Wang	908-616-7330
75862	Seyoung Cheon	858-720-5751
75992	Evan Day	858-720-5700
76043	Yang Hsien Hsu	206-359-8000
77244	Bryan Johnson	415-954-4114
77322	Sean Lee	650-739-7574
77516	Matthew Williams	206-359-3343
77612	Vijay Kumar	425-308-8050
78118	Runkun Jiang	858-720-5700
78749	Alice Jenkins	332-223-3946
78901	Benjamin Cashdollar	206-359-8000
79055	Gregory Logan	737-256-6102
79056	Louis Yang	650-838-4733
79130	Zhenxing Bi	202-654-6299
79222	Mckenzie Chen	312-324-8695
79896	Katlyn Stockslager	206-359-6062
79993	Samantha Hunt	206-757-8563
80395	Michael Wilson	208-457-2398
80461	Brendan Palmer	208-813-3930
80985	Madison Aufai	206-359-8011
81177	Vishal Ravi	332-238-2776
81419	Benjamin Desch	206-359-6112
81523	Sara Serag	617-721-0218
81577	Julie Fischer	262-527-1502
81807	Jason Francis	332-238-2797
81828	Sean Lee	650-838-4300
81941	Justin Cho	206-359-3084
82027	Jun Hyuk Hong	212-261-6866
82171	Adeh Vartanian	818-281-2027
82439	Aidan Faustina	650-838-4359
82602	Willa Wu	206-359-6110
82917	Joseph Merritt	120-635-96312
83180	Adwait Jawale	781-291-9725
L0770	Yang-Hsien Hsu	206-359-8000

Proceeding Documents

1053

Joint Stipulation of Voluntary Dismissal for Appellant Inari Medical, Inc. and Appellee Imperative Care, Inc. Exhibit

2026-09-04 FILING PARTY: PETITIONER

Download

1054

Order Voluntarily Dismissing Appeals Pursuant to FRAP42(b)(1) Exhibit

2026-09-04 FILING PARTY: PETITIONER

Download

Petitioner's Updated Exhibit List NOTICE

2026-09-04 FILING PARTY: PETITIONER

Download

Petitioner's Objections to Evidence Served with Patent Owner's Response REPLYTOOPP

2026-09-01 FILING PARTY: PETITIONER

Download

2014

EX2014 - The rate of resolution of clot burden measured by pulmonary CT angiography in patients with acute pulmonary embolism Exhibit

2026-08-25 FILING PARTY: PATENT OWNER

Download

Imperative Care, Inc. vs. Inari Medical, Inc. et al.

Proceeding Overview

Parties & Counsel

Petitioner

Imperative Care, Inc.

Represented By

Patent Owner / Respondent

Inari Medical, Inc. et al.

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Joint Stipulation of Voluntary Dismissal for Appellant Inari Medical, Inc. and Appellee Imperative Care, Inc. Exhibit

Order Voluntarily Dismissing Appeals Pursuant to FRAP42(b)(1) Exhibit

Petitioner's Updated Exhibit List NOTICE

Petitioner's Objections to Evidence Served with Patent Owner's Response REPLYTOOPP

EX2014 - The rate of resolution of clot burden measured by pulmonary CT angiography in patients with acute pulmonary embolism Exhibit

Patent Owner's Response RESPONSE

EX2011 - Deposition Transcript of Troy Thornton (June 25, 2025) Exhibit

EX2012 - Petition for Inter Partes Review for U.S. Patent No. 12,016,580 (IPR2025- 01264) Exhibit

EX2013 - Automated Entire Thrombus Density Measurements for Robust and Comprehensive Thrombus Characterization in Patients with Acute Ischemic Stroke Exhibit

EX2010 - Supplemental Declaration of Paul Zalesky (EX2033) Exhibit

EX2001 - Declaration of Brian Brown Exhibit

EX2005 - Deposition Transcript of Petitioner’s Expert, Troy L. Thornton (February 18, 2026) Exhibit

EX2008 - U.S. Patent No. 11,554,005 Exhibit

EX2006 - Supplemental Declaration of Paul Zalesky (EX2026) Exhibit

EX2009 - Supplemental Declaration of Paul Zalesky (EX2009) Exhibit

EX2004 - Non-Final Office Action in the ’963 Patent (mailed September 15, 2022) Exhibit

EX2002 - Deposition Transcript of Petitioner’s Expert, Troy L. Thornton (August 11, 2026) Exhibit

EX2003 - U.S. Patent No. 11,849,963 Exhibit

EX2007 - U.S. Patent No. 11,697,012 Exhibit

Patent Owner's Notice of Deposition NOTICE

Petitioner's Updated Exhibit List NOTICE

Patent Owner's Objections to Petitioner's Evidence OTHER

Final Written Decision Determining All Challenged Claims Unpatentable, PR2025-00289 Exhibit

Petitioner's Updated Exhibit List NOTICE

Final Written Decision Determining All Challenged Claims Unpatentable,IPR2025-00156 Exhibit

Final Written Decision Determining All Challenged Claims Unpatentable, IPR2024-01157 Exhibit

SCHEDULING ORDER ORDER

Institution Decision: Grant DECISION

Notice: Mandatory Notice NOTICE

Notice: Notice filing date accorded NOTICE

Record of Oral Hearing held on 10-29-2025 in IPR for IPR2024-01157 Exhibit

669 Prosecution History Exhibit

U.S. Patent No. 11,432,835 B2 to Pons et al. (“Pons”) Exhibit

WIPO Publication No. WO 2018019829 A1 to Brady et al. (“Brady”) Exhibit

U.S. Patent Publication US 20030225379 A1 to Schaffer et al. (“Schaffer”) Exhibit

Decision Granting Institution of IPR for U.S. Patent No. 11,844,921 Exhibit

U.S. Patent No. 8,734,374 B2 to Aklog et al. (“Aklog”) Exhibit

U.S. Patent Publication No. 2010/0042118 A1 to Garrison et al. Exhibit

U.S. Patent No. 5,938,645 to Gordon (“Gordon”) Exhibit

U.S. Patent No. 11,697,011 (“the ’011 patent”) Exhibit

U.S. Provisional Application No. 62/474,383 Exhibit

Order Regarding Case Schedule and Motion to Stay Exhibit

Decision Granting Institution of Inter Partes Review for U.S. Patent '910 Exhibit

U.S. Patent Publication No. 2015/0352325 to Quick (“Quick”) Exhibit

Comparison of Aspiration Techniques for Endovascular Mechan (“Nikoubashman” Exhibit

Decision Granting Institution of IPR for U.S. Patent No. 11,865,291 Exhibit

AXS Universal Aspiration Set Brochure (2017) Exhibit

Definitions of “Port” and “Tighten” (Merriam-Webster) Exhibit

U.S. Patent Publication No. 2014/0296868 A1 to Garrison et al. Exhibit

Deposition Transcript of POs Expert Paul Zalesky, Ph.D. Dated 2025-08-27 Exhibit

Petitioner's Power of Attorney NOTICE

Merriam-Websters Collegiate Dictionary (11th ed. 2014) Exhibit

Expert Declaration of Troy Thornton Exhibit

Decision Granting Institution of Inter Partes Review for U.S. Patent '333 Exhibit

U.S. Patent No. 6,776,770 B2 to Treretola Exhibit

Inari’s Supplemental Infringement Contentions Exhibit

WIPO Publication No. WO 2006124307 A2 to Goff et al. ("Goff") Exhibit

Petition: as filed PETITION

U.S. Provisional Application No. 62/516,582 Exhibit

U.S. Patent No. 12,109,384 Exhibit

Supplemental Declaration of Paul Zalesky Ph.D. submitted by Patent Owner Exhibit

U.S. Patent No. 9,526,864 B2 to Quick Exhibit

U.S Patent No. 12,156,669 Exhibit

U.S. Provisional Patent Application No. 62/554,931 Exhibit

Penumbra, Optimizing Direct Aspiration (May 2013) Exhibit