By Joseph Gedeon
Publication Date: 2026-03-12 14:56:00
Microsoft has strongly supported Anthropic’s lawsuit against the Pentagon, filing a statement of claim to support the AI company’s efforts to overturn an aggressive designation that effectively bars it from government work.
In an amicus brief filed in federal court in San Francisco this week, Microsoft, which integrates Anthropic’s AI tools into systems it provides to the U.S. military, argued that an injunction was necessary to prevent serious disruption to suppliers whose products rely on the AI company’s technology. Google, Amazon, Apple and OpenAI have also signed an agreement to support Anthropic.
In a statement to the Guardian, Microsoft said: “The War Department needs reliable access to the best technology in the country. And everyone wants to ensure that AI is not used for mass domestic surveillance or to start a war without human control. The government, the entire technology sector and the American public need a way to achieve all of this…”



