AstraZeneca Pharmaceuticals LP et al v. Hetero USA Inc.
Plaintiff: MSD International Business GmbH, KuDOS Pharmaceuticals Limited, Array BioPharma, Inc., Alexion Pharma International Operations Limited and AstraZeneca Pharmaceuticals LP
Defendant: Hetero USA Inc.
Case Number: 1:2026cv01437
Filed: November 6, 2026
Court: U.S. District Court for the District of Delaware
Nature of Suit: Patent - Abbreviated New Drug Application(ANDA)
Cause of Action: 35 U.S.C. ยง 1 Patent Infringement
Jury Demanded By: None
Docket Report

This docket was last retrieved on November 9, 2026. A more recent docket listing may be available from PACER.

Date Filed Document Text
November 9, 2026 Filing 10 Summons Issued as to Hetero USA Inc. on 11/9/2026. (aas)
November 6, 2026 Filing 9 Disclosure Statement pursuant to Rule 7.1: identifying Corporate Parent Merck & Co., Inc. for MSD International Business GmbH filed by MSD International Business GmbH. (aas)
November 6, 2026 Filing 8 Disclosure Statement pursuant to Rule 7.1: identifying Corporate Parent AstraZeneca PLC for KuDOS Pharmaceuticals Limited filed by KuDOS Pharmaceuticals Limited. (aas)
November 6, 2026 Filing 7 Disclosure Statement pursuant to Rule 7.1: identifying Corporate Parent Pfizer Inc. for Array BioPharma, Inc. filed by Array BioPharma, Inc.. (aas)
November 6, 2026 Filing 6 Disclosure Statement pursuant to Rule 7.1: identifying Corporate Parent AstraZeneca PLC for Alexion Pharma International Operations Limited filed by Alexion Pharma International Operations Limited. (aas)
November 6, 2026 Filing 5 Disclosure Statement pursuant to Rule 7.1: identifying Corporate Parent AstraZeneca PLC for AstraZeneca Pharmaceuticals LP filed by AstraZeneca Pharmaceuticals LP. (aas)
November 6, 2026 Filing 4 Report to the Commissioner of Patents and Trademarks for Patent/Trademark Number(s) 11,813,246; 12,220,403; 12,318,367; 12,364,684. (aas)
November 6, 2026 Filing 3 Supplemental information for patent cases involving an Abbreviated New Drug Application (ANDA) - Date Patentee(s) Received Notice: No earlier than 9/25/2026. Date of Expiration of Patent: 3/26/2029. Thirty Month Stay Deadline: No earlier than 3/25/2029. (aas)
November 6, 2026 Filing 2 Notice, Consent and Referral forms re: U.S. Magistrate Judge jurisdiction. (aas)
November 6, 2026 Filing 1 COMPLAINT for Patent Infringement against Hetero USA Inc. (Filing fee $ 405, receipt number ADEDC-5108586) - filed by AstraZeneca Pharmaceuticals LP, Alexion Pharma International Operations Limited, Array BioPharma, Inc., KuDOS Pharmaceuticals Limited, MSD International Business GmbH. (Attachments: #1 Exhibits A-D, #2 Civil Cover Sheet)(aas)

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Defendant: Hetero USA Inc.
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Plaintiff: MSD International Business GmbH
Represented By: Alexandra M. Joyce
Represented By: Daniel M. Silver
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Plaintiff: KuDOS Pharmaceuticals Limited
Represented By: Alexandra M. Joyce
Represented By: Daniel M. Silver
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Plaintiff: Array BioPharma, Inc.
Represented By: Alexandra M. Joyce
Represented By: Daniel M. Silver
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Plaintiff: Alexion Pharma International Operations Limited
Represented By: Alexandra M. Joyce
Represented By: Daniel M. Silver
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Plaintiff: AstraZeneca Pharmaceuticals LP
Represented By: Alexandra M. Joyce
Represented By: Daniel M. Silver
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