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Arrowhead Pharmaceuticals, Inc. v. Ionis Pharmaceuticals, Inc.

1:25-cv-01130

Overview

Case Number 1:25-cv-01130
Filing Date 2025-09-10
Status Terminated
Termination Date 2025-12-23
Court District Court, D. Delaware (ded)
Presiding Judge Gregory B. Williams
Nature of Suit 830 Patent
Jurisdiction Type Federal Question
Cause of Action 28:2201 Declaratory Judgment
Jury Demand Plaintiff

Parties

Defendant

Ionis Pharmaceuticals, Inc.

Represented By

1 Attorneys Listed

Megan Elizabeth Dellinger

Morris, Nichols, Arsht & Tunnell LLP

Tel: +1 (302) 351-9366

1201 North Market Street, P.O. Box 1347

Plaintiff

Arrowhead Pharmaceuticals, Inc.

Represented By

4 Attorneys Listed

Megan A. Chacon

Email: chacon@fr.com

Madelyn S. McCormick

Email: mmccormick@fr.com

Louis E. Fogel

Email: fogel@fr.com

Susan E. Morrison

Fish & Richardson

Tel: +1 (302) 652-5070
Fax: +1 (302) 652-0607

Fish & Richardson, 222 Delaware Ave

Court & Judges

Court

District Court, D. Delaware (ded)

Presiding Judge

Gregory B. Williams

Patents Involved

1 Patent

There is a single patent involved in this case.

Application Number Patent Number External Links
- US9593333

Docket Entries

COMPLAINT for Declaratory Judgment with Jury Demand against Ionis Pharmaceuticals, Inc. (Filing fee $ 405, receipt number ADEDC-4786672) - filed by Arrowhead Pharmaceuticals, Inc. (Attachments: # 1 Exhibit A, # 2 Exhibit B, # 3 Exhibit C, # 4 Exhibit D, # 5 Exhibit E, # 6 Exhibit F, # 7 Exhibit G, # 8 Exhibit H, # 9 Civil Cover Sheet)(mpb) (Entered: 09/11/2025)

2025-09-10
1

COMPLAINT for Declaratory Judgment with Jury Demand against Ionis Pharmaceuticals, Inc. (Filing fee $ 405, receipt number ADEDC-4786672) - filed by Arrowhead Pharmaceuticals, Inc. (Attachments: # 1 Exhibit A, # 2 Exhibit B, # 3 Exhibit C, # 4 Exhibit D, # 5 Exhibit E, # 6 Exhibit F, # 7 Exhibit G, # 8 Exhibit H, # 9 Civil Cover Sheet)(mpb) (Entered: 09/11/2025)

2025-09-10
2

COMPLAINT for Declaratory Judgment with Jury Demand against Ionis Pharmaceuticals, Inc. (Filing fee $ 405, receipt number ADEDC-4786672) - filed by Arrowhead Pharmaceuticals, Inc. (Attachments: # 1 Exhibit A, # 2 Exhibit B, # 3 Exhibit C, # 4 Exhibit D, # 5 Exhibit E, # 6 Exhibit F, # 7 Exhibit G, # 8 Exhibit H, # 9 Civil Cover Sheet)(mpb) (Entered: 09/11/2025)

2025-09-10
2

COMPLAINT for Declaratory Judgment with Jury Demand against Ionis Pharmaceuticals, Inc. (Filing fee $ 405, receipt number ADEDC-4786672) - filed by Arrowhead Pharmaceuticals, Inc. (Attachments: # 1 Exhibit A, # 2 Exhibit B, # 3 Exhibit C, # 4 Exhibit D, # 5 Exhibit E, # 6 Exhibit F, # 7 Exhibit G, # 8 Exhibit H, # 9 Civil Cover Sheet)(mpb) (Entered: 09/11/2025)

2025-09-10
2

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