Appeal 2006-1865 Application 09/660,433 Patent 5,802,641 This court earlier concluded that prosecution history estoppel can arise by way of unmistakable assertions made to the Patent Office in support of patentability, just as it can arise by way of amendments to avoid prior art. See, e.g., Texas Instruments, Inc. v. International Trade Comm’n, 988 F.2d 1165, 1174, 26 USPQ2d 1018, 1025 (Fed. Cir. 1993). See also Judge Michel’s opinion concurring-in-part and dissenting-in-part in Festo Corp. v. Shoketsu Kinzoku Kogyo Kabushiki Co., 234 F.3d 558, 602, 56 USPQ2d 1865, 1899 (Fed. Cir. 2000) (Festo I), vacated and remanded, 535 U.S. 722, 122 S. Ct. 1831, 62 USPQ2d 1705 (2002) (Festo II)6 (Michel, J.,): [T]he law of prosecution history estoppel has developed with equal applicability to reissue patents and original patents whose claims were amended during prosecution. By at least 1879, the Supreme Court recognized that the process of obtaining a reissue patent precluded the patentee from recapturing that which he had disclaimed (i.e., surrendered), through the reissuance process. 6 The “Festo” convention used in this opinion is: Festo I is the original in banc decision of the Federal Circuit. Festo II is the decision of the Supreme Court. Festo III is the decision of the Federal Circuit on remand. - 30 -Page: Previous 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 Next
Last modified: September 9, 2013