IP Blog
Section 102 on-sale bar
Section 102 On-Sale Bar Invalidates Software Patent Claims
The Federal Circuit has upheld a jury verdict invalidating patent claims covering a software product that the plaintiff had demonstrated and sold prior to filing a patent application. Leader Technologies, Inc. v. Facebook, Inc., No. 2011-1366 (May 8, 2012). The claimed invention was conceived in August 1999. Development of software based on the invention began “immediately” thereafter, and completed sometime...