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Appeals Court Rejects Anthropic's Request to Halt Department of War Blacklist

·2026.04.09 09:00

Key point

A U.S. federal appeals court has rejected Anthropic's request to suspend the Department of War's blacklist action.

Details

A U.S. federal appeals court did not accept Anthropic's request to temporarily block the Department of War's blacklist action until the lawsuit concludes. As a result, Anthropic will be excluded from Department of War contracts, but can continue working with other government agencies.

With this decision, defense contractors using Claude are also prohibited from using the model for work related to the Department of War. However, they can continue to use Claude for other cases or work unrelated to the Department of War.

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