Anthropic Seeks Full Appeals Court Rehearing on Pentagon Supply-Chain Risk Designation

Anthropic has formally petitioned the U.S. Court of Appeals for the District of Columbia to rehear its challenge to the Trump administration's March 2026 designation of the company as a national-security supply-chain risk, arguing a three-judge panel misapplied federal law and ignored evidence of First Amendment retaliation. The AI company filed the en banc request on October 13, 2026, challenging a September 25 decision in which Judges Gregory Katsas and Neomi Rao upheld the Pentagon's blacklist, with Judge Karen LeCraft Henderson dissenting.