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Expanded Metal Co. v. Bradford

214 U.S. 366, 29 S. Ct. 652, 53 L. Ed. 1034 (1909)

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Expanded Metal Co. v. Bradford

United States Supreme Court
214 U.S. 366, 29 S. Ct. 652, 53 L. Ed. 1034 (1909)

Facts

Expanded Metal Company (plaintiff) held a patent on an improved method of making expanded sheet metal. The patent claimed a process by which sheet metal could be simultaneously cut and expanded. Expanded Metal brought an infringement action in federal court. The trial court upheld the validity of the patent. The circuit court of appeals reversed, holding that patents claiming a process were only valid if the process was chemical in nature. The case was then appealed to the United States Supreme Court.

Rule of Law

Issue

Holding and Reasoning (Day, J.)

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