Judge Slams Patent Lawyers for AI-Hallucinated Cites in Brief

Attorneys representing patent owner Lexos Media IP LLC have to explain themselves to a judge after filing a brief containing artificial intelligence-generated quotations and legal citations in an infringement suit against Overstock.com Inc.

Judge Julie A. Robinson’s Monday show-cause order told Lexos’ lawyers to explain what AI platform was used to assist in their writing of a July pre-trial filing and inform the court if their client was aware of their use of generative AI.

The Lexos brief, which argued against excluding testimony from an expert witness, was replete with defects including "(1) nonexistent quotations; (2) nonexistent and incorrect citations; ...