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GLAXO GROUP LTD. v. DRIT LP

No. 25, 2020.

248 A.3d 911 (2021)

GLAXO GROUP LIMITED and Human Genome Sciences, Inc., Defendants Below, Appellants/Cross-Appellees, v. DRIT LP, Plaintiff Below, Appellee/Cross-Appellant.

Supreme Court of Delaware.

Decided: March 3, 2021.

Attorney(s) appearing for the Case

Philip A. Rovner, Esquire , and Jonathan A. Choa, Esquire , POTTER ANDERSON & CORROON LLP, Wilmington, Delaware; Lisa S. Blatt, Esquire (argued), Sarah M. Harris, Esquire , Sumeet P. Dang, Esquire , and Kimberly Broecker, Esquire , WILLIAMS & CONNOLLY LLP, Washington, D.C.; Attorneys for Defendants-Appellants/Cross-Appellees Glaxo Group Limited and Human Genome Sciences, Inc.

Gregory P. Williams, Esquire , Chad M. Shandler, Esquire , and Nicole Pedi, Esquire , RICHARDS, LAYTON & FINGER, P.A., Wilmington, Delaware; Keith R. Hummel, Esquire (argued), and Karin A. DeMasi, Esquire , CRAVATH, SWAINE & MOORE LLP, New York, New York; Attorneys for Plaintiff-Appellee/Cross-Appellant DRIT LP.

Before SEITZ, Chief Justice; VALIHURA, VAUGHN, TRAYNOR, and MONTGOMERY-REEVES, Justices, constituting the Court en Banc.

Glaxo Group Limited and Human Genome Sciences, Inc. (collectively, "GSK") owned patents covering Benlysta, a lupus treatment drug. To expand its intellectual property rights, GSK filed a patent application with the United States Patent and Trademark Office ("PTO") claiming a method for treating lupus. Biogen Idec MA Inc. (...

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