Bristol-Myers Squibb Company v. Teva Pharmaceuticals USA, Inc.
Court of Appeals for the Federal Circuit
1Opinion of the Court
CHEN, Circuit Judge.
This patent infringement case concerns a drug for the treatment of hepatitis B. After a four-day bench trial, the United States District Court for the District of Delaware found claim 8 of U.S. Patent No. 5,206,244 (’244 patent) invalid as obvious. We affirm the district court’s invalidity judgment for the reasons that follow.
I
Appellant Bristol-Myers Squibb Co. (BMS) owns the '244 patent. Claim 8 of the '244 patent is directed to a nucleoside analog composed of two regions: a carbo-cyclic ring and a guanine base. Nucleo-side analogs are manmade compounds designed to mimic…
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