Federal judge sides with Anthropic in first round of standoff with Pentagon - The Guardian

A federal judge granted Anthropic a preliminary injunction Thursday, pausing the Trump administration's blacklisting of the company from federal contracts — and used the word that Anthropic had been waiting to hear from a courtroom.

It looks like an attempt to cripple Anthropic.

That was Judge Rita F. Lin, a Biden appointee to the U.S. District Court for the Northern District of California, in her March 26 ruling. The finding is striking not because it is dramatic but because it is judicial: Lin was not editorializing. She was characterizing what the government's own actions looked like from the bench, and she found them troublingly unmoored from the national security rationale the administration had offered.

The case began March 9, when Anthropic filed suit over a February designation that made it the first U.S. company publicly labeled a supply-chain risk under an obscure federal procurement statute. The company had refused to allow its Claude AI to be used for mass domestic surveillance or fully autonomous weapons — conditions it said the Pentagon attempted to impose before awarding a defense contract. When Anthropic declined, the contract went elsewhere. The designation followed.

Lin's injunction does not require the government to use Anthropic's technology or prevent it from choosing another vendor. It returns the parties to the status quo as of February 27, before the designation took effect. DOJ lawyers had argued that Anthropic could install a kill switch or modify Claude's behavior during wartime — a risk they called unacceptable. Lin found that argument unpersuasive as a basis for the actions actually taken.

The timing of the broader conflict is not accidental. Hours after Anthropic was blacklisted, OpenAI announced its own Pentagon deal, incorporating the same safety restrictions Anthropic had been punished for demanding (NYT, Business Insider). That loop — punish the company that held the line, reward the one that moved immediately — is the subtext of this case and the reason it matters beyond the legal technicalities.

Nearly 150 retired federal and state judges filed an amicus brief supporting Anthropic, an extraordinary display of judicial solidarity that reflects how unusual this designation is. Emil Michael, the Department of War's under secretary for research and engineering, has said the Pentagon is confident it can replace Claude within six months. Whether that confidence is warranted and what a six-month transition actually costs in operational terms are questions the injunction does not answer — but it buys time for them to be asked in court rather than resolved by decree.

This is the first round. The preliminary injunction is a procedural win, not a final judgment. The administrative law claims — whether the designation was arbitrary, whether the First Amendment retaliation claims hold, whether the government's supply-chain rationale actually tethered to genuine national security concerns — are still to be decided. Lin noted in her ruling that the government's three actions appeared not to be tailored to the stated security concern. That is the heart of the case. DOJ may appeal to the Ninth Circuit.

Anthropic is represented by Michael J. Mongan of WilmerHale. The case is Anthropic PBC v. U.S. Department of War, 3:26-cv-01996, U.S. District Court for the Northern District of California.