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On March 20, 2012 the Supreme Court announced its decision in Mayo Collaborative Services v. Prometheus Laboratories, Inc.  The question in this case was whether a patent can be issued for an observed correlation between blood test results and patient reactions to prescription drugs.

In an opinion delivered by Justice Breyer, the Court unanimously held that such a patent effectively attempts to claim underlying laws of nature, and is therefore invalid.

To discuss the case we have Adam Mossoff, who is a professor at George Mason University School of Law.

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