Federal Circuit: Host Cell In Patent Not Naturally Occurring, Judgment Reversed

( February 23, 2026, 2:07 PM EST) -- WASHINGTON, D.C. — A Delaware federal judge wrongly concluded that a patent’s claims involving genetically engineered cultured host cells containing a recombinant nucleic acid molecule were directed to a natural phenomenon, a Federal Circuit U.S. Court of Appeals panel held Feb. 20....