by Dennis Crouch

Although the result could have been guessed, the Federal Circuit has issued an important decision interpreting the scope of post-AIA 35 U.S.C. 102 -- and the meaning of the "claimed invention." Celanese Intl. Corp. v. Intl. Trade Comm'n,  22-01827 (Fed. Cir. August 12, 2024).   In particular, the court affirmed the precedent of D.L. Auld -- i.e., the on-sale bar continues to block patenting of an otherwise secret process when the patentee makes pre-filing sales of product made using that process. The ITC had invalidated Celanese' artificial sweetener manufacturing process patent based upon these pre-filing sales. That judgment was thus affirmed on appeal.