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)
Relevant factsFree
Takamine isolated a purified substance from an animal's suprarenal gland and patented it, assigning the patent to Parke-Davis, which then sued a competitor selling a similar isolated product for infringement.
IssueFree
Whether a patent is invalid simply because the patentee merely separated the product from its surrounding materials.
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