Celanese v. ITC: Can a Secret Manufacturing Process Be Patented After Sale of the Resulting Product?
Patently-O
MARCH 4, 2024
by Dennis Crouch The Federal Circuit held oral arguments on March 4, 2024 in the important patent case of Celanese Int’l. Background Celanese developed an improved process for making the artificial sweetener acesulfame potassium ( Ace-K ). Celanese sued Jinhe for patent infringement at the International Trade Commission (ITC).
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