Celanese v. ITC: Can a Secret Manufacturing Process Be Patented After Sale of the Resulting Product?
Patently-O
MARCH 4, 2024
In 2016, over a year after it began selling Ace-K, Celanese filed patent applications on its heretofore secret Ace-K process. Celanese sued Jinhe for patent infringement at the International Trade Commission (ITC). Chisum, Chisum on Patents ยง 6.02[5][b] When competitor Anhui Jinhe began importing Ace-K into the U.S.,
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