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Anthropic seeks rehearing of case over Pentagon’s security risk branding

By Thomson Reuters Oct 13, 2026 | 7:52 PM

Oct 13 (Reuters) – Anthropic asked a US appeals court on Tuesday to reconsider a ruling that upheld the Pentagon’s decision to label the ​AI company as a national security supply chain ‌risk over a dispute about safety guardrails on its technology.

• A federal appeals court in September upheld the designation in a 2-1 decision, agreeing with the Pentagon that the firm’s ‌safety ​restrictions could compromise military operations. The ⁠Pentagon’s blacklisting of the ⁠company has cost it billions of dollars in lost business, Anthropic has said.

• The court’s majority said the Pentagon acted reasonably after Anthropic refused to ​allow its AI to be used in autonomous weapons or mass surveillance, and the court rejected ⁠the firm’s claim that it ⁠faced retaliation by the Defense Department over ​its views on AI safety.

• In its petition on ​Tuesday to the US Court of Appeals in ‌Washington, DC, for a rehearing, Anthropic argued that the panel majority misinterpreted and transformed a federal law “aimed at hostile foreign actors into one that presumptively reaches every ⁠government contractor.”

• The court let the Pentagon take action against Anthropic “without any pre-designation process and despite straightforward evidence the ⁠designation was retaliation ‌for Anthropic’s speech about AI safety,” ⁠the company said.

• In a separate lawsuit ​in ‌August, a federal judge in California ​struck down ⁠a parallel designation under a different law.

• Anthropic CEO Dario Amodei has called for regulation covering all US frontier AI companies, while the Trump administration has favored a pro-growth approach.

(Reporting by Rishabh Jaiswal in Bengaluru; Editing ​by Cynthia Osterman)