Personalized Medicine Patenting Update

Patenting diagnostic methods is more challenging in the wake of the U.S. Supreme Courts Mayo Collaborative Services v. Prometheus Laboratories, Inc., 566 U.S. __ (2012) (Prometheus) and the USPTO's application of the decision, as set forth in its Guidance Document distributed to patent examiners. Patent examiners are advised to follow the Guidance Document in examining a process claim (e.g., medical method claim) in which a law of nature, a natural phenomenon, or naturally occurring relation or correlation (collectively referred to as a natural principle in the Guidance Document) is a limiting element or step. Thus, a medical diagnostic claim that correlates or relates to a genetic marker or physiological measurement (typical in personalized medicine) is subject to the Guidance Document as the claim necessarily includes an element interpreted by the USPTO as a natural principle.