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MICROSOFT CORP. v. I4I LTD. PARTNERSHIP

No. 10-290.

131 S.Ct. 2238 (2011)

564 U.S. 91

180 L.Ed.2d 131

MICROSOFT CORP., Petitioner, v. i4i LIMITED PARTNERSHIP et al.

Supreme Court of United States.

Decided June 9, 2011.

Attorney(s) appearing for the Case

Thomas G. Hungar , Washington, DC, for petitioner.

Seth P. Waxman , Washington, DC, for respondents.

Malcolm L. Stewart , Bernard J. Knight, Jr. , Raymond T. Chen , Robert J. McManus , William LaMarca , Neal Kumar Katyal , Tony West , Ginger D. Anders , Scott R. McIntosh and Joshua Waldman , for United States as amicus curiae, by special leave of the Court, supporting the respondents.

Matthew D. Powers , Weil, Gotshal & Manges LLP, Redwood Shores, CA, T. Andrew Culbert , Isabella Fu , Microsoft Corporation, Redmond, WA, Theodore B. Olson , Thomas G. Hungar , Counsel of Record, Matthew D. McGill , Scott P. Martin , Gibson, Dunn & Crutcher LLP, Washington, DC, Kevin Kudlac , Amber H. Rovner , Weil, Gotshal & Manges LLP, Houston, TX for Petitioner.

Donald R. Dunner , Don R. Burley , Erik Puknys , Kara F. Stoll , Jason W. Melvin , Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P. Washington, DC, Seth P. Waxman , Counsel of Record, Paul R.Q. Wolfson , Daniel S. Volchok , Francesco Valentini , Arthur Coviello , Wilmer Cutler Pickering , Hale and Dorr LLP, Washington, DC, Douglas A. Cawley , Jeffrey A. Carter , T. Gordon White , McKool Smith P.C., Dallas, Texas, Robert Greene Sterne , Sterne, Kessler, Goldstein & Fox PLLC, Washington, DC, for Respondents.

Justice SOTOMAYOR delivered the opinion of the Court.

Under § 282 of the Patent Act of 1952, "[a] patent shall be presumed valid" and "[t]he burden of establishing in-validity of a patent or any claim thereof shall rest on the party asserting such invalidity." 35 U.S.C. § 282. We consider whether § 282 requires an invalidity defense to be proved by clear and convincing evidence. We hold that it does.

I

A

Pursuant to its authority...

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