March 12 - Anthropic on Wednesday asked a U.S. appeals court to hold off on a Pentagon designation that labels the company a supply-chain risk while a court reviews the matter. In its filing with the U.S. Court of Appeals for the District of Columbia Circuit, the AI developer argued that the designation would cause the company "irreparable harm."
The request for a stay follows a weeks-long dispute over technology guardrails governing how the U.S. military may use Anthropic’s artificial intelligence tools. Defense Secretary Pete Hegseth described the firm as a supply-chain risk and prohibited the Pentagon and its contractors from using Anthropic’s AI products.
Anthropic also filed a separate lawsuit earlier this week in a federal court in California to challenge the Pentagon’s blacklisting. In the appeals-court filing, the company said the government action has prompted outreach from more than 100 enterprise customers concerned about the designation.
Lawyers for Anthropic wrote in the filing that "By Anthropic’s best estimate, for 2026, the government’s adverse actions risk hundreds of millions, or even multiple billions, of dollars in lost revenue." The company tied that projection directly to the Pentagon’s actions and sought judicial relief while the underlying legal challenges proceed.
The Pentagon did not immediately respond to a request for comment outside of regular business hours.
Context and procedural posture
Anthropic has pursued parallel legal strategies: an immediate appeal to the D.C. Circuit asking for a stay of the Pentagon’s designation, and a separate complaint filed in California federal court challenging the blacklisting itself. The appeals-court filing frames the supply-chain label as a direct threat to the company’s business prospects and customer relationships.
Company statements in the filings emphasize both the potential financial impact in 2026 and the reputational effects evidenced by substantial outreach from enterprise customers.
Market and sector implications
- Defense procurement and contractor operations could be affected by the Pentagon’s prohibition on Anthropic products.
- Enterprise users of AI services have signaled concern, according to Anthropic, which could influence commercial adoption decisions.