(June 9, 2011) On June 9, 2011, the U.S. Supreme Court confirmed that the presumption of validity under 35 U.S.C. § 282 requires an accused infringer to meet a “clear and convincing” standard to prevail on an invalidity defense in Microsoft Corp. v. i4i Limited Partnership, No. 10-290, 564 U.S. __ (S.Ct. Jun. 9, 2011).
In particular, the Court, per Justice Sotomayor writing for the majority, rejected Microsoft’s contention that a defendant need only persuade the jury of a patent invalidity defense by a preponderance of the evidence. The Court relied upon the fact that when Congress adopted the common law term “presumed valid” in 35 U.S.C. § 282, Congress intended to adopt the meaning attached to this term, which required a clear and convincing standard for challenges to patent validity.
The Court rejected Microsoft’s statutory construction arguments and also rejected Microsoft’s contention that the clear and convincing standard should not apply when the prior art in question was not before the Examiner during prosecution. However, the Court recognized that a jury may be instructed to evaluate whether the evidence before it is materially new, and if so, to consider that fact when determining whether an invalidity defense has been proved by clear and convincing evidence. Finally, the Court left it up to Congress to consider the wisdom and policy arguments associated with maintaining a “clear and convincing” standard.
Justice Breyer, in a concurring opinion, joined by Justices Scalia and Alito, also separately joined the majority opinion in full, but wrote to highlight that the “clear and convincing” standard only applies to invalidity inquiries which are concerned with questions of fact, rather than questions of law. Thus, Justice Breyer illustrated this distinction as follows:
(Breyer concur, at p.1). Justice Breyer suggested that courts should “keep applications of today’s ‘clear and convincing’ standard within its proper legal bounds by separating factual and legal aspects of an invalidity claim ....” (Breyer concur, at p.2).
Justice Thomas filed a separate concurring opinion which agreed that “the heightened standard of proof set forth in Radio Corp. of America v. Radio Engineering Laboratories, Inc., 293 U. S. 1 (1934)—which has never been overruled by this Court or modified by Congress—applies.” However, Justice Thomas did not agree with the majority opinion that Congress had codified that standard in Section 282.
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*Charles R. Macedo is a partner and Joseph M. Casino was a partner at Amster, Rothstein & Ebenstein LLP. Their practice specializes in intellectual property issues including litigating patent, trademark and other intellectual property disputes. Charles may be reached at [email protected].
Mr. Macedo is also the author of The Corporate Insider’s Guide to U.S. Patent Practice, published by Oxford University Press in 2009.
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