ViiV Healthcare Company et al v. Zydus Pharmaceuticals (USA) Inc. et al
Plaintiff: ViiV Healthcare Company, Shionogi & Co., Ltd. and ViiV Healthcare UK (No.3) Limited
Defendant: Zydus Pharmaceuticals (USA) Inc., Zydus Lifesciences Global FZE and Zydus Lifesciences Limited
Case Number: 1:2025cv01520
Filed: December 17, 2025
Court: U.S. District Court for the District of Delaware
Presiding Judge: Gregory B Williams
Nature of Suit: Patent - Abbreviated New Drug Application(ANDA)
Cause of Action: 35 U.S.C. § 1 Patent Infringement
Jury Demanded By: None
Docket Report

This docket was last retrieved on May 28, 2026. A more recent docket listing may be available from PACER.

Date Filed Document Text
May 28, 2026 Pro Hac Vice Attorney Hannah J. Thomas for Zydus Lifesciences Global FZE, Zydus Lifesciences Limited & Zydus Pharmaceuticals (USA) Inc. added for electronic noticing. Pursuant to Local Rule 83.5 (d)., Delaware counsel shall be the registered users of CM/ECF and shall be required to file all papers. (slk)
May 26, 2026 Pro Hac Vice Attorney Michael J. Gaertner for Zydus Lifesciences Global FZE, Zydus Lifesciences Limited & Zydus Pharmaceuticals (USA) Inc. added for electronic noticing. Pursuant to Local Rule 83.5 (d)., Delaware counsel shall be the registered users of CM/ECF and shall be required to file all papers. (slk)
May 15, 2026 Pro Hac Vice Attorney Nina Vachhani for Zydus Lifesciences Global FZE, Zydus Lifesciences Limited, and Zydus Pharmaceuticals (USA) Inc. added for electronic noticing. Pursuant to Local Rule 83.5 (d)., Delaware counsel shall be the registered users of CM/ECF and shall be required to file all papers. (mpb)
May 13, 2026 Pro Hac Vice Attorney Zhibin Li for Zydus Lifesciences Global FZE, Zydus Lifesciences Limited, and Zydus Pharmaceuticals (USA) Inc. added for electronic noticing. Pursuant to Local Rule 83.5 (d)., Delaware counsel shall be the registered users of CM/ECF and shall be required to file all papers. (mpb)
May 12, 2026 Opinion or Order SO ORDERED, re #25 STIPULATION TO EXTEND TIME the deadline for the Parties to submit a Proposed Scheduling Order to June 17, 2026 filed by ViiV Healthcare UK (No.3) Limited, ViiV Healthcare Company, Shionogi & Co., Ltd. Signed by Judge Gregory B. Williams on 5/12/2026. (lnb)
May 11, 2026 Filing 25 STIPULATION TO EXTEND TIME the deadline for the Parties to submit a Proposed Scheduling Order to June 17, 2026 - filed by Shionogi & Co., Ltd., ViiV Healthcare Company, ViiV Healthcare UK (No.3) Limited. (Joyce, Alexandra)
May 7, 2026 Opinion or Order SO ORDERED, re #23 MOTION for Pro Hac Vice Appearance of Attorney Zhibin Li filed by Zydus Lifesciences Global FZE, Zydus Pharmaceuticals (USA) Inc., Zydus Lifesciences Limited. Signed by Judge Gregory B. Williams on 5/7/2026. (lnb)
May 7, 2026 Opinion or Order SO ORDERED, re #22 MOTION for Pro Hac Vice Appearance of Attorney Nina Vachhani filed by Zydus Lifesciences Global FZE, Zydus Pharmaceuticals (USA) Inc., Zydus Lifesciences Limited. Signed by Judge Gregory B. Williams on 5/7/2026. (lnb)
May 6, 2026 Filing 24 Pro Hac Vice Fee - Credit Card Payment received for Nina Vachhani and Zhibin Li. ( re #23 MOTION for Pro Hac Vice Appearance of Attorney Zhibin Li, #22 MOTION for Pro Hac Vice Appearance of Attorney Nina Vachhani )( Payment of $ 100, receipt number BDEDC-4964207).(Koopman, Andrew)
May 6, 2026 Filing 23 MOTION for Pro Hac Vice Appearance of Attorney Zhibin Li - filed by Zydus Lifesciences Global FZE, Zydus Lifesciences Limited, Zydus Pharmaceuticals (USA) Inc.. (Attachments: #1 Certification by Counsel to be admitted Pro Hac Vice)(Koopman, Andrew)
May 6, 2026 Filing 22 MOTION for Pro Hac Vice Appearance of Attorney Nina Vachhani - filed by Zydus Lifesciences Global FZE, Zydus Lifesciences Limited, Zydus Pharmaceuticals (USA) Inc.. (Attachments: #1 Certification by Counsel to be admitted Pro Hac Vice)(Koopman, Andrew)
May 6, 2026 Opinion or Order SO ORDERED, re #19 MOTION for Pro Hac Vice Appearance of Attorney Jacob C. Britz filed by Zydus Lifesciences Global FZE, Zydus Pharmaceuticals (USA) Inc., Zydus Lifesciences Limited. Signed by Judge Gregory B. Williams on 5/6/2026. (lnb)
May 6, 2026 Opinion or Order SO ORDERED, re #18 MOTION for Pro Hac Vice Appearance of Attorney Michael J. Gaertner filed by Zydus Lifesciences Global FZE, Zydus Pharmaceuticals (USA) Inc., Zydus Lifesciences Limited. Signed by Judge Gregory B. Williams on 5/6/2026. (lnb)
May 6, 2026 Pro Hac Vice Attorney Jacob C. Britz for Zydus Lifesciences Global FZE, Zydus Lifesciences Limited & Zydus Pharmaceuticals (USA) Inc. added for electronic noticing. Pursuant to Local Rule 83.5 (d)., Delaware counsel shall be the registered users of CM/ECF and shall be required to file all papers. (slk)
May 6, 2026 Opinion or Order SO ORDERED, re #20 MOTION for Pro Hac Vice Appearance of Attorney Hannah J. Thomas filed by Zydus Lifesciences Global FZE, Zydus Pharmaceuticals (USA) Inc., Zydus Lifesciences Limited. Signed by Judge Gregory B. Williams on 5/6/2026. (lnb)
May 4, 2026 Filing 21 Pro Hac Vice Fee - Credit Card Payment received for Michael J. Gaertner, Jacob C. Britz, and Hannah J. Thomas. ( re #19 MOTION for Pro Hac Vice Appearance of Attorney Jacob C. Britz, #18 MOTION for Pro Hac Vice Appearance of Attorney Michael J. Gaertner, #20 MOTION for Pro Hac Vice Appearance of Attorney Hannah J. Thomas )( Payment of $ 150, receipt number BDEDC-4962319).(Koopman, Andrew)
May 1, 2026 Filing 20 MOTION for Pro Hac Vice Appearance of Attorney Hannah J. Thomas - filed by Zydus Lifesciences Global FZE, Zydus Lifesciences Limited, Zydus Pharmaceuticals (USA) Inc.. (Attachments: #1 Certification by Counsel to be admitted Pro Hac Vice)(Koopman, Andrew)
May 1, 2026 Filing 19 MOTION for Pro Hac Vice Appearance of Attorney Jacob C. Britz - filed by Zydus Lifesciences Global FZE, Zydus Lifesciences Limited, Zydus Pharmaceuticals (USA) Inc.. (Attachments: #1 Certification by Counsel to be admitted Pro Hac Vice)(Koopman, Andrew)
May 1, 2026 Filing 18 MOTION for Pro Hac Vice Appearance of Attorney Michael J. Gaertner - filed by Zydus Lifesciences Global FZE, Zydus Lifesciences Limited, Zydus Pharmaceuticals (USA) Inc.. (Attachments: #1 Certification by Counsel to be admitted Pro Hac Vice)(Koopman, Andrew)
April 27, 2026 Filing 17 NOTICE of Appearance by Andrew John Koopman on behalf of Zydus Lifesciences Global FZE, Zydus Lifesciences Limited, Zydus Pharmaceuticals (USA) Inc. (Koopman, Andrew)
April 16, 2026 Opinion or Order Filing 16 ORAL ORDER: IT IS HEREBY ORDERED that, by no later than thirty (30) days from the date of this Order, the parties shall meet and confer and file a joint proposed Scheduling Order in this action consistent with the applicable form Scheduling Order of Judge Williams, which is posted at http://www/ded/uscourts.gov (See Chambers, Judge Williams, Forms), along with a cover letter requesting the Court to enter the joint proposed Scheduling Order (if there are no disputes or other issues concerning scheduling that the Court needs to address) or to schedule the Scheduling Conference. If there are disputes or other issues the Court needs to address in the joint proposed Scheduling Order, in the cover letter, the parties shall direct the Court to the paragraph numbers in the joint proposed Scheduling Order which those appear. Parties should also send a WORD version of the joint proposed Scheduling Order to [email protected]. ORDERED by Judge Gregory B. Williams on 4/16/2026. (lnb)
March 17, 2026 Filing 15 Disclosure Statement pursuant to Rule 7.1: identifying Corporate Parent Zydus Lifesciences Limited for Zydus Lifesciences Global FZE, Zydus Pharmaceuticals (USA) Inc. filed by Zydus Lifesciences Global FZE, Zydus Lifesciences Limited, Zydus Pharmaceuticals (USA) Inc.. (Blaszkowski, Christopher)
March 17, 2026 Filing 14 ANSWER to #1 Complaint, by Zydus Lifesciences Global FZE, Zydus Lifesciences Limited, Zydus Pharmaceuticals (USA) Inc..(Blaszkowski, Christopher)
January 8, 2026 Opinion or Order SO ORDERED, re #13 STIPULATION TO EXTEND TIME to move, plead, or otherwise respond to the Complaint to March 17, 2026 filed by Zydus Lifesciences Global FZE, Zydus Pharmaceuticals (USA) Inc., Zydus Lifesciences Limited, Reset Answer Deadlines: All Defendants. Signed by Judge Gregory B. Williams on 1/8/2026. (lnb)
January 7, 2026 Filing 13 STIPULATION TO EXTEND TIME to move, plead, or otherwise respond to the Complaint to March 17, 2026 - filed by Zydus Lifesciences Global FZE, Zydus Lifesciences Limited, Zydus Pharmaceuticals (USA) Inc.. (Blaszkowski, Christopher)
January 6, 2026 Filing 12 WAIVER OF SERVICE returned executed by ViiV Healthcare Company, Shionogi & Co., Ltd., ViiV Healthcare UK (No.3) Limited: For Zydus Pharmaceuticals (USA) Inc. waiver sent on 12/17/2025, answer due 3/17/2026. (Silver, Daniel)
January 6, 2026 Filing 11 WAIVER OF SERVICE returned executed by ViiV Healthcare Company, Shionogi & Co., Ltd., ViiV Healthcare UK (No.3) Limited: For Zydus Lifesciences Limited waiver sent on 12/17/2025, answer due 3/17/2026. (Silver, Daniel)
December 23, 2025 Case Assigned to Judge Gregory B. Williams. Please include the initials of the Judge (GBW) after the case number on all documents filed. (alb)
December 22, 2025 CORRECTING ENTRY: The main pdf at D.I. #9 has been replaced with the correct version. The NEF for D.I. #9 has been regenerated. (nms)
December 19, 2025 Filing 10 DECLARATION of Service for Zydus Lifesciences Limited by Shionogi & Co., Ltd., ViiV Healthcare Company, ViiV Healthcare UK (No.3) Limited. (Attachments: #1 Exhibit A-B)(Joyce, Alexandra)
December 19, 2025 Filing 9 DECLARATION of Service for Zydus Lifesciences Global FZE by Shionogi & Co., Ltd., ViiV Healthcare Company, ViiV Healthcare UK (No.3) Limited. (Attachments: #1 Exhibit A-B)(Joyce, Alexandra) (Main Document 9 replaced on 12/22/2025) (nms).
December 19, 2025 Filing 8 DECLARATION of Service for Zydus Pharmaceuticals (USA) Inc. by Shionogi & Co., Ltd., ViiV Healthcare Company, ViiV Healthcare UK (No.3) Limited. (Attachments: #1 Exhibit A-B)(Joyce, Alexandra)
December 17, 2025 Filing 7 Summons Issued as to Zydus Lifesciences Global FZE on 12/17/2025; Zydus Lifesciences Limited on 12/17/2025; Zydus Pharmaceuticals (USA) Inc. on 12/17/2025. (Attachments: #1 Summons Issued, #2 Summons Issued)(cdd)
December 17, 2025 Filing 6 Disclosure Statement pursuant to Rule 7.1 identifying: Corporate Parent ViiV Healthcare Limited for ViiV Healthcare Company; Other Affiliates ViiV Healthcare Company, ViiV Healthcare UK Limited, and ViiV Healthcare Limited for ViiV Healthcare UK (No.3) Limited; Corporate Parent GlaxoSmithKline Mercury Limited, PHIVCO Luxembourg Sarl, PHIVCO Corp. and Shionogi B.V. for ViiV Healthcare Limited; Corporate Parent GSK plc. for GlaxoSmithKline Mercury Limited; Corporate Parent Pfizer, Inc. for PHIVCO Luxembourg Sarl and PHIVCO Corp.; and Corporate Parent Shionogi & Co. Ltd. for Shionogi B.V., filed by ViiV Healthcare Company, ViiV Healthcare UK (No.3) Limited. (cdd)
December 17, 2025 Filing 5 Disclosure Statement pursuant to Rule 7.1: No Parents or Affiliates Listed filed by Shionogi & Co., Ltd. (cdd)
December 17, 2025 Filing 4 Report to the Commissioner of Patents and Trademarks for Patent/Trademark Number(s) 9,242,986; 10,426,780. (cdd)
December 17, 2025 Filing 3 Supplemental information for patent cases involving an Abbreviated New Drug Application (ANDA) - Date Patentee(s) Received Notice: 11/4/2025. Date of Expiration of Patent(s): 9,242,986; 12/8/2029, with pediatric exclusivity through 6/8/2030. 10,426,780; 1/24/2031.Thirty Month Stay Deadline: No earlier than 5/4/2028. (cdd)
December 17, 2025 Filing 2 Notice, Consent and Referral forms re: U.S. Magistrate Judge jurisdiction. (cdd)
December 17, 2025 Filing 1 COMPLAINT for Patent Infringement against Zydus Lifesciences Global FZE, Zydus Lifesciences Limited, Zydus Pharmaceuticals (USA) Inc. (Filing fee $ 405, receipt number ADEDC-4860854) - filed by ViiV Healthcare Company, Shionogi & Co., Ltd., ViiV Healthcare UK (No.3) Limited. (Attachments: #1 Civil Cover Sheet)(cdd)

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Search for this case: ViiV Healthcare Company et al v. Zydus Pharmaceuticals (USA) Inc. et al
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Plaintiff: ViiV Healthcare Company
Represented By: Alexandra M. Joyce
Represented By: Daniel M. Silver
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Plaintiff: Shionogi & Co., Ltd.
Represented By: Alexandra M. Joyce
Represented By: Daniel M. Silver
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Plaintiff: ViiV Healthcare UK (No.3) Limited
Represented By: Alexandra M. Joyce
Represented By: Daniel M. Silver
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Defendant: Zydus Pharmaceuticals (USA) Inc.
Represented By: Zhibin Li
Represented By: Nina Vachhani
Represented By: Michael J. Gaertner
Represented By: Jacob C. Britz
Represented By: Hannah J. Thomas
Represented By: Andrew John Koopman
Represented By: Christopher H. Blaszkowski
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Defendant: Zydus Lifesciences Global FZE
Represented By: Zhibin Li
Represented By: Nina Vachhani
Represented By: Michael J. Gaertner
Represented By: Jacob C. Britz
Represented By: Hannah J. Thomas
Represented By: Andrew John Koopman
Represented By: Christopher H. Blaszkowski
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Defendant: Zydus Lifesciences Limited
Represented By: Zhibin Li
Represented By: Nina Vachhani
Represented By: Michael J. Gaertner
Represented By: Jacob C. Britz
Represented By: Hannah J. Thomas
Represented By: Andrew John Koopman
Represented By: Christopher H. Blaszkowski
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