A federal appeals court on Friday upheld the Pentagon's authority to designate Anthropic, one of the leading U.S. artificial intelligence companies, as a supply chain risk, declining the company's request to block the blacklisting while litigation continues. The ruling leaves in place restrictions that could significantly affect Anthropic's ability to work with U.S. government contractors and agencies.

The Defense Department placed Anthropic on its supply chain risk list under authority granted to identify companies believed to pose national security concerns, a designation the company has vigorously contested. Anthropic argued the listing was unlawful and sought emergency relief from the courts, but the appeals panel sided with the Trump administration's position that the executive branch retains broad discretion over such security determinations.

The decision marks a significant legal victory for the administration as it moves to assert tighter control over the AI sector amid intensifying rivalry with China over advanced technology development. The Pentagon's action against Anthropic — a company founded by former OpenAI researchers and backed by billions in investment — signals that even prominent domestic AI developers are not immune from national security scrutiny.

Anthropic has maintained that the designation is factually unsupported and has damaged its business relationships. The company is expected to continue pursuing its legal challenge on the merits, even as the appeals court's refusal to grant interim relief represents a procedural setback. Legal analysts noted the ruling does not resolve the underlying questions about the adequacy of the government's evidence or the procedural steps taken before the designation was made.

The case is unfolding against a backdrop of broader U.S.-China tensions over artificial intelligence, with Washington increasingly scrutinizing technology companies for potential links or vulnerabilities that could benefit foreign adversaries. Axios reported separately on ongoing diplomatic dynamics involving AI and U.S.-China relations, underscoring the high-stakes geopolitical environment surrounding the dispute.