Legal Opinion
Astellas Pharma Inc., Astellas Ireland Co., Ltd., and Astellas Pharma Global Development, Inc. v. Ascent Pharmaceuticals, Inc., MSN Pharmaceuticals Inc., and MSN Laboratories Private Limited
District Court, D. Delaware
Decided March 6, 2026No. 1:23-cv-00486Unknown
1Opinion
IN THE UNITED STATES DISTRICT COURT FOR THE DISTRICT OF DELAWARE ASTELLAS PHARMA INC., ASTELLAS IRELAND CO., LTD., and ASTELLAS PHARMA GLOBAL DEVELOPMENT, INC., 1:23CV486 Plaintiffs, MEMORANDUM & ORDER vs. ASCENT PHARMACEUTICALS, INC., MSN PHARMACEUTICALS INC., and MSN LABORATORIES PRIVATE LIMITED, Defendants. This matter is before the Court after a bench trial from October 27, 2025, to October 31, 2025. This is a patent infringement action brought under the Hatch-Waxman Act, 21 U.S.C. § 355, et seq. Defendant Ascent Pharmaceuticals, Inc. (“Ascent” or “Defendant”) filed an Abbreviated New…
2Cases cited29 opinions
- Graham v. John Deere Co. of Kansas CitySupreme Court of the United States · 1966
- KSR International Co. v. Teleflex Inc.Supreme Court of the United States · 2007
- Mayo Collaborative Services v. Prometheus Laboratories, Inc.Supreme Court of the United States · 2012
- Microsoft Corp. v. i4i Ltd. PartnershipSupreme Court of the United States · 2011
- Festo Corp. v. Shoketsu Kinzoku Kogyo Kabushiki Co.Supreme Court of the United States · 2002
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