Microsoft Corp. v. i4i Ltd. P'ship

In Microsoft Corp. v. i4i Ltd. P'ship, 564 U.S. 91, 95, 131 S. Ct. 2238, 2242 (2011), the U.S. Supreme Court held that:

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Under § 282 of the Patent Act of 1952, “[a] patent shall be presumed valid” and “[t]he burden of establishing invalidity 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.

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