The Supreme Court’s Decision in Mayo v. Prometheus: Medical Process is an Unpatentable Law of Nature

Fitzpatrick Case Update
March 20, 2012

On March 20, 2012, the U.S. Supreme Court issued a unanimous (9-0) opinion in Mayo Collaborative Services v. Prometheus Laboratories, Inc., concerning the scope of patent-eligible subject matter. The Court reversed the Federal Circuit and held that Prometheus’s process for optimizing dosage was a law of nature and thus unpatentable under 35 U.S.C. § 101.

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