Case law in the USA
AT&T Corp. v. Excel Communications Inc., 172 F.3d 1352, 135659 (Fed. Cir. 1999)
Diamond v. Diehr, 450 U.S. 175, 192 (1981)
Ex parte Yang-Huffman, Appeal 20072130, slip op. at 3 (Bd. Pat. App. & Interf. Oct. 4, 2007)
Gottschalk v. Benson, 409 U.S. 63 (1972)
Graham v. John Deere, 383 U.S. 1, 6 (1966)
In re Alappat, 33 F.3d 1526, 1543 (Fed. Cir. 1994)
KSR Int'l Co. v. Teleflex Inc., 127 S. Ct. 1727 (2007)
Laboratory Corp. of America Holdings v. Metabolite Laboratories, Inc., 548 U.S. 124 (2007)
NTP v. Research in Motion, Ltd., 397 F. Supp. 2d 785 (E.D. Va. 2005)
Northern Telecom v. Datapoint, 908 F.2d 931, 940-941 (1990)
Parker v Flook, 437 U.S. 584 (1978)
State Street Bank & Trust Co. v. Signature Financial Group, Inc., 149 F.3d 1368, 1374 n. 6 (Fed. Cir. 1999)
Bilski
(detailed article: Bilski)