New York Times columnist Andrew Ross Sorkin and CEO and co-founder of Anthropic Dario Amodei converse onstage through the 2025 New York Times Dealbook Summit at Jazz at Lincoln Center in New York, Dec. 3, 2025.
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A federal appeals court in Washington, D.C., on Wednesday denied Anthropic’s request to temporarily block the Department of Defense’s blacklisting of the synthetic intelligence firm as a lawsuit difficult that sanction performs out.
The ruling comes after a decide in San Francisco federal court late final month, in a separate however associated case, granted Anthropic a preliminary injunction that bars the Trump administration from implementing a ban on the usage of Claude.
“In our view, the equitable balance here cuts in favor of the government,” the appeals court mentioned in its determination. “On one side is a relatively contained risk of financial harm to a single private company. On the other side is judicial management of how, and through whom, the Department of War secures vital AI technology during an active military conflict. For that reason, we deny Anthropic’s motion for a stay pending review on the merits.”
With the cut up selections by the 2 courts, Anthropic is excluded from DOD contracts however is in a position to proceed working with different authorities companies whereas litigation performs out.
The DOD declared Anthropic a supply chain risk in early March, which means that use of the corporate’s expertise purportedly threatens U.S. nationwide safety. The label requires defense contractors to certify that they do not use Anthropic’s Claude AI fashions of their work with the navy.
Anthropic had asked the appeals court to review the Pentagon’s willpower and argued that it is a type of retaliation that is unconstitutional, arbitrary, capricious and never in accord with procedures required by regulation, in accordance to a filing.
In the ruling on Wednesday, the court acknowledged that Anthropic “will likely suffer some degree of irreparable harm absent a stay,” however that the corporate’s pursuits “seem primarily financial in nature.” While the corporate claimed the DOD was standing in the way in which of its proper to free speech, “Anthropic does not show that its speech has been chilled during the pendency of this litigation,” the order mentioned.
Because of the hurt Anthropic is probably going to undergo, the appeals court mentioned “substantial expedition is warranted.”
An Anthropic spokesperson mentioned in a press release after the ruling that the corporate is “grateful the court recognized these issues need to be resolved quickly” and that it is “confident the courts will ultimately agree that these supply chain designations were unlawful.”
“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 mentioned.

The DOD relied on two distinct designations underneath the U.S. federal court to justify the availability chain danger motion, they usually have to be challenged in two separate courts.
Anthropic’s go well with towards the Pentagon in March adopted a dramatic couple weeks in Washington D.C., between the Department of Defense and one of the invaluable personal corporations on this planet.
In a put up on X in late February, Defense Secretary Pete Hegseth declared Anthropic a supply chain risk, and the DOD quickly notified the corporate of the official willpower through a letter. Anthropic is the primary American firm to be given the designation, which has traditionally been reserved for international adversaries.
Shortly earlier than Hegseth’s put up, President Donald Trump wrote a Truth Social post ordering federal companies to “immediately cease” all use of Anthropic’s expertise. He mentioned there can be a six-month phase-out interval for companies just like the DOD.
The Trump administration’s actions stunned many officers in Washington, the place Anthropic’s expertise had turn out to be embedded in quite a few companies. The firm was the primary to deploy its fashions throughout the DOD’s categorized networks, and it was championed for its capacity to combine with current Defense contractors like Palantir.
Anthropic signed a $200 million contract with the Pentagon in July, however as the corporate started negotiating Claude’s deployment on the DOD’s GenAI.mil AI platform in September, talks stalled.
The DOD wished Anthropic to grant the Pentagon unfettered entry to its fashions throughout all lawful functions, whereas Anthropic wished assurance that its expertise wouldn’t be used for absolutely autonomous weapons or home mass surveillance.
The two failed to attain an settlement, pushing the dispute to court.
— CNBC’s Dan Mangan contributed to this report.
WATCH: Anthropic wins preliminary injunction in fight over Pentagon blacklisting
