DC Circuit Court Rejects Anthropic’s Request to Block Military Blacklisting

The U.S. Court of Appeals for the District of Columbia Circuit has denied AI company Anthropic’s motion to block the Department of War from blacklisting its technology, creating a judicial conflict with an earlier ruling from a California federal court on the same matter.

In its April 8 order, the DC Circuit Court stated that the “equitable balance cuts in favor of the government,” weighing a “relatively contained risk of financial harm to a single private company” against “judicial management of how, and through whom, the Department of War secures vital AI technology during an active military conflict.”

Despite rejecting the stay request, the court acknowledged that Anthropic “raises substantial challenges” and would “likely suffer some irreparable harm,” agreeing that expedited resolution of the case is warranted.

Anthropic responded to the ruling with optimism, telling Fox News Digital: “We’re grateful the court recognized these issues need to be resolved quickly and remain confident the courts will ultimately agree that these supply chain designations were unlawful.” The company emphasized its desire to work productively with the government to ensure “all Americans benefit from safe, reliable AI.”

The legal dispute stems from a January request by the War Department for “unrestricted use” of Anthropic’s AI technology “for all lawful purposes.” Anthropic drew two firm boundaries, refusing to allow its technology to be used for domestic surveillance or lethal autonomous weapons development.

The Trump administration characterized this refusal as corporate insubordination, though Pentagon spokesperson Sean Parnell stated in February that the War Department “has no interest in using AI to conduct mass surveillance of Americans (which is illegal) nor do we want to use AI to develop autonomous weapons that operate without human involvement.”

President Donald Trump escalated the conflict on February 27, announcing via Truth Social that he was “directing EVERY Federal Agency in the United States Government to IMMEDIATELY CEASE all use of Anthropic’s technology,” with a six-month phase-out period for agencies like the Department of War that were using Anthropic products.

The same day, War Secretary Pete Hegseth declared on social media that he was “directing the Department of War to designate Anthropic a Supply-Chain Risk to National Security.” In March, the department formally notified Anthropic of this designation.

The legal situation became more complex when U.S. District Judge Rita Lin of the Northern District of California issued a preliminary injunction last month blocking the government from implementing these actions against Anthropic. Judge Lin’s order was designed to “restore the status quo” without requiring the War Department to use Anthropic’s products or preventing it from transitioning to other AI providers.

Acting U.S. Attorney General Todd Blanche celebrated the DC Circuit Court’s decision as “a resounding victory for military readiness,” stating, “Our position has been clear from the start — our military needs full access to Anthropic’s models if its technology is integrated into our sensitive systems. Military authority and operational control belong to the Commander-in-Chief and Department of War, not a tech company.”

This case highlights the growing tensions between the U.S. government and technology companies over the appropriate boundaries for AI deployment in national security contexts. The conflicting court decisions create uncertainty about how AI companies can balance ethical considerations against government demands, particularly in military applications.

As the expedited legal proceedings continue, the outcome will likely establish important precedents for the relationship between AI developers and government agencies, especially regarding technologies with potential military applications.