A U.S. court has just handed the AI startup behind Claude, Anthropic, a major win in its legal fight with the federal government. A judge blocked the Donald Trump administration’s decision to label the company a “supply-chain risk.” The ruling effectively stops federal agencies from cutting ties with Anthropic and prevents the Department of War (or the Pentagon) from enforcing a directive that would have barred the use of its AI models across government work.

In plain terms, the court said the government likely overstepped and that punishing a U.S. company for policy disagreements violates free-speech protections.

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The decision from Judge Rita Lin of the Northern District of California doesn’t just protect Anthropic’s current contracts with the government; it also shields the company from the reputational and financial fallout that comes with being branded a national security threat, a designation usually reserved for firms tied to foreign adversaries.

“Nothing in the governing statute supports the Orwellian notion that an American company may be branded a potential adversary and saboteur of the US for expressing disagreement with the government,” Judge Lin said.

For now, government agencies and contractors are not required to stop using Anthropic’s technology. The company also sought out relief from the effects of the directive from Defence Secretary Pete Hegseth, which the company argued had a hand in the loss of hundreds of millions of dollars in cancelled, truncated or stalled contracts.

Claude was previously used by the military in operations that have not been made public, including in the Iran war and the capture of Venezuelan leader Nicolás Maduro.

The conflict started when Anthropic sought explicit assurances that its flagship AI model, Claude, would not be used for autonomous weapons systems or mass domestic surveillance. The Pentagon pushed back, arguing that existing laws and military policies already restricted such uses and that additional contractual limits were unnecessary. Negotiations broke down, and what might have been a quiet policy dispute quickly turned into a public standoff.

Hegseth designated Anthropic a supply-chain risk, and President Trump directed agencies to halt work with the company. Anthropic sued, arguing it was being retaliated against for questioning how its technology would be deployed.

“While this case was necessary to protect Anthropic, our customers and our partners, our focus remains on working productively with the government to ensure all Americans benefit from safe, reliable AI,” Anthropic said in a statement about the ruling.

All of this is happening as Anthropic is reportedly exploring an initial public offering that could come as soon as October. The company was last valued at around $380 billion after a $30 billion funding round earlier this year, and reports suggest an IPO could raise its value upwards of $60 billion.

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