Zenith Laboratories, Inc. v. Bristol-Myers Squibb Company

U.S. Court of Appeals, Federal Circuit · Decided 1994-05-26

Cited by 116 later decision(s) in our corpus · see the citation network in Lexace

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From the opinion

PLAGER, Circuit Judge. The question in this declaratory judgment action is whether a drug compound, which in its manufactured state does not infringe the patent in suit, becomes infringing as a result of transitory chemical changes that occur in vivo, that is, as a result of ingestion by the patient. There are fact issues — what changes actually occur when…

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