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Parke-Davis & Co. v. H.K. Mulford Co.
United States Circuit Court for the Southern District of New York
189 F. 95 (C.C.S.D.N.Y. 1911)
Jokichi Takamine was the first to isolate a certain purified substance from an animal’s suprarenal gland. Takamine obtained a patent and assigned it to Parke-Davis & Co. (Parke-Davis) (plaintiff), which began selling the substance as a medicine. H.K. Mulford Co. (Mulford) (defendant) sold a similar product. Parke-Davis brought suit against Mulford for patent infringement.
Rule of Law
Holding and Reasoning (Hand, J.)
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