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Legal tech firm sues US over order limiting foreign access to top-tier Anthropic models

By Thomson Reuters Jun 23, 2026 | 4:38 PM

By Mike Scarcella

WASHINGTON, June 23 (Reuters) – A U.S. legal technology company on Tuesday sued the federal government, challenging a directive by President Donald Trump’s administration that resulted in the ​artificial intelligence firm Anthropic halting access to two of its ‌most advanced models for users worldwide.

Legion LegalTech Corp filed its lawsuit in Washington, D.C., federal court, saying a June 12 order by the U.S. Commerce Department’s Bureau of Industry and Security unlawfully required Anthropic to disable its Fable 5 ‌and ​Mythos 5 models for “any foreign national.” Anthropic ⁠turned off access for all ⁠customers the same day to ensure compliance.

San Jose, California-based Legion says it depends on Anthropic’s tools for its software platform and that the U.S. government’s action immediately cut off access for ​members of its Canada-based software development team and disrupted its business. The company builds drafting and case-management tools for attorneys.

“The harm to ⁠Legion is immediate, irreparable, and existential,” ⁠the lawsuit said. “The pace of frontier AI advancement is ​blistering, and competitive ground lost during a suspension cannot be regained ​after the fact.”

The Commerce Department and White House did not ‌immediately respond to requests for comment. Anthropic is not a party to the litigation.

Anthropic on Tuesday referred to a prior statement that said it was “grateful to the administration for their ongoing partnership in working ⁠to get this matter resolved as quickly as possible.”

Legion asked a U.S. judge to vacate and set aside the administration’s directive targeting Anthropic. The ⁠company also said it ‌would ask for a preliminary order to bar ⁠the administration from enforcing the directive.

Anthropic and the ​United ‌States are locked in legal battles in Washington ​and California ⁠federal courts. Anthropic sued the Trump administration after the government moved to place the company on a supply-chain blacklist over its refusal to allow the military to use its AI models for domestic surveillance or fully autonomous weapons.

(Reporting by Mike Scarcella in Washington; Editing by Matthew LewisEditing ​by Matthew Lewis)