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The Impact Of Uncertainty Regarding Patent Eligible Subject Matter For Investment In U.S. Medical Diagnostic Technologies, A. Sasha Hoyt

Washington and Lee Law Review

Historically, 35 U.S.C. § 101, the statute governing patent eligible subject matter, has been construed broadly—with its legislative history indicating that it should cover “anything under the sun that is made by man.” The Supreme Court crafted three exceptions to § 101: (1) abstract ideas, (2) laws of nature, and (3) natural phenomena. In recent years, the Supreme Court’s eligibility jurisprudence has further narrowed § 101 to effectively exclude meritorious medical diagnostic methods. Indeed, since the Court’s decision in Mayo Collaborative Services v. Prometheus Laboratories, Inc., the Federal Circuit has held every single diagnostic method claim brought before it …