Claude generated "an inaccurate title and incorrect authors" in a legal citation, per a court filing. The AI was used to help draft a citation in an expert report for Anthropic's copyright lawsuit.

From Judge Judith Levy (E.D. Mich.) in Evans v. Robertson, the I've Seen Fake Cites on Both Sides Now case: The litigants in this case … have been repeatedly warned that factitious citations will not ...

Donald Trump’s former lawyer and fixer, Michael Cohen, accidentally gave his lawyer phony legal citations — which were then used in a motion given to a federal judge — conjured by Google’s artificial ...

"Judge Matthewman’s opinion provides a primer on the use of AI for legal research and discusses the possible repercussions for submitting 'hallucinated,' nonexistent case law in a legal pleading," ...

A lawyer defending Anthropic had to clean up after the company's AI bot, calling it "an embarrassing and unintentional mistake." In a copyright lawsuit over Anthropic's use of music lyrics, the ...