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Clear out junk files and repair common Windows errorsFree Scan →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →More than 30 employees of OpenAI and Google, including Google DeepMind chief scientist Jeff Dean, filed a court brief supporting Anthropic’s challenge to U.S. government actions against the AI company. They signed in their personal capacities: the filing was not made by, or on behalf of, OpenAI or Google. Their central concern was that penalizing Anthropic for limits on mass surveillance of Americans and fully autonomous lethal warfare could chill safety-related decisions across the AI industry.
What did the OpenAI and Google employees file?
On March 9, 2026, the employees submitted an amicus curiae brief in Anthropic PBC v. U.S. Department of War et al., a case in the U.S. District Court for the Northern District of California. An amicus brief is filed by someone who is not a party to a case but offers arguments or expertise that may help the court decide an issue. Anthropic is the plaintiff; the employees did not join its lawsuit as plaintiffs.
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The filing supported Anthropic’s request for emergency, preliminary relief while its challenge proceeded. It identifies the signatories as acting in their individual capacities, not as representatives of their employers. The brief and a contemporaneous account of the filing are available in the amicus brief and WIRED’s report.
What is Anthropic challenging?
Anthropic’s March 9 complaint alleges that negotiations with the Defense Department broke down over the government’s demand for “all lawful use” of its models. Anthropic says it was willing to support defense work but would not remove two restrictions: no mass surveillance of Americans and no fully autonomous lethal warfare.
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According to the complaint, the government then directed federal agencies to stop using Anthropic technology and the Defense Department designated the company a “Supply-Chain Risk to National Security.” Anthropic alleges that the designation could restrict contractors, suppliers, and military partners from commercial activity with it, and that the actions were retaliation for the company’s position. These are allegations in Anthropic’s complaint, not final findings by a court. The complaint describes the company’s account of the negotiations and the challenged actions.
The designation should not be confused with a finding that Claude has a security vulnerability or that Anthropic is a foreign adversary. It is a government procurement and national-security designation whose legality and application are being contested. The case caption uses “Department of War”; “Pentagon” is commonly used to refer to the department.
Why did the employees object to the government’s actions?
The employees’ brief argues that the dispute matters beyond Anthropic because government pressure on one company’s safety conditions could affect how other AI developers assess and communicate risks.
- Potential chilling effect: The signatories argue that penalizing a company for stating technical or ethical concerns could deter researchers and firms from raising similar concerns about military deployment.
- Technical judgment: They frame Anthropic’s restrictions as safeguards grounded in judgments about current AI capabilities, not merely as commercial preferences.
- Private safeguards: The brief argues that contractual limits and technical controls imposed by developers can provide meaningful protections where public rules do not specify adequate safeguards.
- U.S. competitiveness: The employees contend that unpredictable treatment of a leading U.S. AI company could undermine American scientific and industrial competitiveness.
Those are the signatories’ arguments, not a court ruling or proof of an industry-wide consensus. The full reasoning appears in the employees’ filing.
What do the two safety restrictions cover?
Mass surveillance of Americans
The concern described in the brief is not simply any use of AI by law enforcement or intelligence agencies. It is the possibility of combining large, previously separate datasets—such as location histories, facial-recognition records, financial transactions, and social connections—to monitor people at broad scale. AI could make such analysis more integrated, automated, and continuous. That raises a different question from a targeted search under legal process or intelligence collection focused on foreign actors.
Fully autonomous lethal warfare
The second restriction concerns systems that select and attack lethal targets without a meaningful human decision point. The employees argue that current AI systems can fail in unfamiliar or ambiguous situations, misidentify targets, and provide inadequate explanations for their outputs. They question whether such systems can reliably account for context and potential civilian harm when making a lethal decision.
This dispute is not a claim that Anthropic opposed all military uses of AI. The complaint describes negotiations over defense uses subject to the company’s two limits; the contested boundary is unrestricted use, particularly mass surveillance of Americans and fully autonomous lethal decisions.
Does the brief mean OpenAI and Google officially support Anthropic?
No corporate endorsement is established by the employees’ filing. The signatories explicitly acted personally, and the brief does not make OpenAI or Google parties to the case. WIRED reported that the companies had not immediately provided corporate comments when it covered the filing.
The distinction is especially important for OpenAI. WIRED also reported that CEO Sam Altman criticized enforcement of the supply-chain-risk designation as bad for the industry and the country, while OpenAI pursued defense-sector work during the dispute. Employee advocacy, an executive’s public criticism, and a company’s business decisions are separate positions; the brief does not combine them into a single OpenAI policy.
What did Anthropic ask the court to do?
Anthropic sought a temporary restraining order, a preliminary injunction, a stay under the Administrative Procedure Act, and declaratory and injunctive relief against the challenged government actions. A preliminary injunction is interim relief: it can preserve a party’s position while litigation continues, but it does not itself decide the final merits. The requests are set out in Anthropic’s motion for emergency relief.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What happened after the brief was filed?
March 26: preliminary injunction
On March 26, 2026, Judge Rita Lin issued a preliminary injunction restraining the defendant agencies and associated personnel from implementing or enforcing the challenged presidential and Defense Department actions while the case proceeded. The order was a significant interim result for Anthropic, not a final judgment that resolved the dispute. See the court’s order and the related docket entry.
June 11: further amicus briefing allowed
On June 11, the court allowed additional amicus briefs related to the parties’ summary-judgment briefing, with further briefs due June 26. That later procedural step indicates the litigation continued beyond the employees’ March filing and the preliminary injunction. The June 11 order and docket history document the schedule.
As of the latest docket information cited here, no final merits judgment had been verified. The case’s official court page is maintained by the U.S. District Court for the Northern District of California.
Why the case matters beyond these companies
The case raises a practical governance question: when a company supplies AI to the government, can it keep contractual and technical limits on how the system is used, or can the government demand broader access and penalize a refusal? The employees’ brief argues that private safeguards can matter where public regulation is not specific enough. The government’s actions, as described in Anthropic’s complaint, put that claim into a legal dispute over federal authority and the consequences of resisting the requested terms.
For workers at competing AI companies, the filing also shows how individual researchers may speak publicly and in court about risks even when their employers have different commercial incentives. It does not establish that those employees’ views bind their companies—or that their arguments will determine the outcome. The court’s preliminary relief left the central legal questions for continued proceedings.
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