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The Justice Department filed a with the Ninth Circuit on Monday, October 26th, challenging Judge Rita Lin's August ruling that the government "failed to justify" barring federal agencies from using Anthropic's models, Bloomberg reported.
Lin's 59-page order found the ban violated the First and Fifth Amendments.
The department has not yet filed its arguments, and a separate challenge to the Pentagon's supply-chain-risk designation is running in the D.C. Circuit. Anthropic's lists the dispute as a .
The appeal lands the same week Anthropic cut prices 40% for every level of US government, so the company is courting agencies while the administration fights in court to keep them away. The Bloomberg original is paywalled and was not opened.
The Justice Department appeals the ruling that struck down the federal ban on Anthropic
The Justice Department filed a notice of appeal with the Ninth Circuit on Monday, October 26th, challenging Judge Rita Lin's August ruling that the government "failed to justify" barring federal agencies from using Anthropic's models, Bloomberg reported. Lin's 59-page order found the ban violated the First and Fifth Amendments. The department has not yet filed its arguments, and a separate challenge to the Pentagon's supply-chain-risk designation is running in the D.C. Circuit.
Anthropic's IPO prospectus lists the dispute as a risk factor. The appeal lands the same week Anthropic cut prices 40% for every level of US government, so the company is courting agencies while the administration fights in court to keep them away. The Bloomberg original is paywalled and was not opened. SourcesBC
Sources
- BDOJ appeals court ruling lifting ban on agency Anthropic use (Bloomberg)bloomberg.com
- CDOJ appeals ruling that lifted federal agency ban (AI Weekly)aiweekly.co
This story ran in the Morning Brief of October 31st 2026.