Supreme Court Affirms Clear and Convincing Standard for Patent Invalidity Defenses By Samantha Kuhn – Edited by Esther Kang Microsoft Corp. v. i4i Ltd. P’ship, No. 10–290 (U.S. June 9, 2011) Slip Opinion (via supremecourt.gov) On June 9, the Supreme Court affirmed a district court’s jury instructions requiring that the evidence of patent invalidity be “clear and convincing” for the invalidity defense against infringement to be successful. In a unanimous decision, the Supreme Court held that the presumption of validity ...
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