( February 11, 2025, 1:55 PM EST) -- WASHINGTON, D. C. — A Delaware federal judge was wrong to dismiss a patent infringement claim against Groupon Inc. , a Federal Circuit U. S. Court of Appeals panel held Feb. 10; the panel said that prior decisions of the U. S. Patent Trial and Appeal Board (PTAB) cannot estop a patent holder from asserting infringement arguments based on other patent claims that were not considered by the board. . . .