“This was not an unexpected outcome given the composition of the panel that heard the case,” Charlie Bullock, senior research fellow at the Institute for Law & AI think tank, told reporters — a summary judgment that captures both the legal reasoning and the political texture behind a federal appellate decision this week.
D.C. Circuit ruling upholds Pentagon's supply‑chain designation
Judges Gregory Katsas and Neomi Rao of the U.S. Court of Appeals for the D.C. Circuit ruled on Friday that the Defense Department may continue to designate Anthropic as a "supply‑chain risk" and may prohibit its employees and contractors from using Anthropic products for Department of Defense business. The opinion carried a dissent from Judge Karen LeCraft Henderson.
The designation has been in force since March, after the department sought to alter its contract with Anthropic to broaden allowable uses from prohibitions on domestic mass surveillance and fully autonomous weapons to allowances for “all lawful use.” Anthropic challenged that designation in federal court; while it successfully beat back one statutory justification in an August ruling in the Northern District of California, the D.C. Circuit decision sustains the Pentagon's remaining legal rationale.
Timeline: demands, designation, and litigation
The sequence of actions is compact and specific. On Feb. 24, the Defense Department issued an ultimatum demanding Anthropic permit its AI to be used for all legal purposes by Feb. 27; Anthropic refused. On Feb. 27, the department's leadership announced a direction to designate Anthropic a supply‑chain risk, and that designation was formally announced on March 3. Litigation followed in multiple courts; the D.C. Circuit issued its ruling this week.
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End the scramblePublic reactions: Anthropic, the department, and outside analysts
Anthropic's public response to the D.C. Circuit decision was succinct. In a statement to The Washington Sun the company said, “We respectfully disagree with the court’s decision. Another federal court has already held the government’s parallel designation unlawful.” Anthropic added that it “remain[s] confident in our position and are considering all options, including further review.”
The Defense Department's public posture has been firm and rhetorically pointed. Defense Undersecretary Emil Michael posted on X, “The hammer of justice has smashed @AnthropicAI arguments. They are a supply‑chain risk to the defense industrial base serving the @DeptofWar. Warfighters will sleep better knowing that no private company will insert their opinions in the chain of command. @SecWar was right!”
Outside legal observers signaled the ruling was shaped by the panel composition. Charlie Bullock said both Katsas and Rao “have shown a great deal of deference to the Trump administration's assertions of executive authority on matters of national security,” and suggested Anthropic’s legal position could fare better before a differently constituted panel. Bullock also said Anthropic’s chances on further appeal “are good” if it reaches an en banc D.C. Circuit or the Supreme Court, but noted those review processes are discretionary.
Operational impact: use of Claude and defense procurement
The ruling is likely to keep the Pentagon and its other contractors reducing their use of Anthropic's products, such as its Claude tools, for DOD business. The court’s holding preserves the department's ability to bar its personnel and contractors from depending on those products for defense work, maintaining the operational constraint the department imposed when it labeled Anthropic a supply‑chain risk.
What this means for Anthropic, Pentagon contractors, and investors
- Pentagon contractors: Expect continued curtailment of Anthropic products in defense procurements and internal DOD projects, since the designation remains in force and the appellate court affirmed the department’s prohibition for DOD business.
- Anthropic: The company has signaled it will consider further review and noted a prior federal court decision in its favor; it faces both continued operational restrictions with the department and potential further litigation avenues.
- Investors and markets: Anthropic’s commercial trajectory remains notable in the record: the company’s revenue is “growing about tenfold per year,” and it plans an initial public offering in November that some expect could value the company at $2 trillion. The DOD designation, however, may affect the company’s government customer base even as commercial revenue increases.
The D.C. Circuit ruling cements a specific legal outcome: the Department of Defense can keep Anthropic on a roster of suppliers treated as a supply‑chain risk and can bar use of the company’s products for DOD business. That outcome leaves unanswered whether Anthropic will secure further appellate review and how the company's planned November IPO and steep revenue growth will intersect with sustained exclusion from a segment of the government market.
