US Appeal Court Upholds Pentagon’s Anthropic ExclusionAn Anthropic logo is displayed at Moscone Center during the Dreamforce 2026 technology summit in San Francisco, California, US, September 17, 2026. REUTERS/Carlos Barria/File Photo

A major United States appellate ruling has placed artificial-intelligence safeguards, government procurement powers and national security in the same legal arena after a divided court upheld the Pentagon’s exclusion of Anthropic.

The United States Court of Appeals for the District of Columbia Circuit has upheld the federal government’s decision to exclude Anthropic’s Claude artificial-intelligence models from the Pentagon’s supply chain.

The 2-1 judgment in Anthropic PBC v. United States Department of War, No. 26-1049, consolidated with No. 26-1162, was delivered on September 25 and became a major international legal-technology story on Saturday.

The majority concluded that the department had statutory grounds for treating continued integration of Claude into its information systems as a covered supply-chain risk.

Anthropic had challenged the decision after a dispute over restrictions surrounding specified uses of its AI technology.

The case is significant beyond a single AI company because it tests the intersection of contractual safeguards imposed by technology developers, federal procurement authority and national-security decision-making.

A dissent took a narrower interpretation of the supply-chain security statute and disagreed with the majority’s application of it to Anthropic’s contractual restrictions.

Category: International / Technology Law

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Source: U.S. Court of Appeals for the D.C. Circuit

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