Federal court rules Pentagon blacklisting of Anthropic was unconstitutional

A federal judge has ruled that the Pentagon’s blacklisting of Anthropic earlier this year was unconstitutional. The decision brings a resolution to a monthslong legal battle between the artificial intelligence laboratory and the Trump administration.

The legal dispute

The lawsuit was filed in March in a California district court after the administration designated Anthropic a supply chain risk. The company accused federal officials of unlawful retaliation for setting boundaries regarding acceptable military applications of its technology.

In the ruling, Judge Rita F. Lin stated that the administration's actions violated the First Amendment. She noted that invoking national security does not grant the government authority to punish critics, adding that the supply chain risk designation was arbitrary and capricious.

Background on military terms

The conflict began when the Department of Defense sought to renegotiate current contracts with artificial intelligence labs to permit broad military applications. While most labs agreed to the updated terms, Anthropic maintained specific restrictions against two use cases:

• Mass surveillance of American citizens
• Lethal autonomous weapons operating without human oversight

Following the company's refusal to alter its stance, defense officials issued an ultimatum. After CEO Dario Amodei publicly defended the company's position, the Pentagon applied the supply chain risk classification and pursued agreements with alternative artificial intelligence providers.

Next steps

Anthropic responded to the designation with legal action, resulting in a preliminary block earlier in the year and the recent final ruling. A company spokesperson welcomed the decision and emphasized a continued commitment to collaborating with government entities on national security applications.