Connecticut lawyer accused of citing AI-generated fake cases in court filings

DANBURY — The attorney for a plaintiff in a Greenwich-based breach of contract lawsuit contends the defendant’s lawyer used artificial intelligence in court filings that were rife with bogus and “hallucinated” case law.

“The unfettered use of AI without ensuring the accuracy of the content submitted to the Court is problematic, as it impugns the integrity of our judicial system and is a violation of the standards of accuracy, candor and professionalism owed to the Court,” Greenwich attorney Philip Russell wrote in a motion for sanctions against the defendant contractor and its attorney, Nicholas Mingione.

Mingione could not be reached immediately for comment Tuesday.

The call for sanctions stems from a lawsuit filed in December 2024 by J. Salvatore & Sons Inc. contending that sloppy masonry work by New Fairfield-based Gencor Contracting Corp. at a construction project on Midwood Road in Greenwich led to flooding and damage estimated at more than $80,000.

Dated Jan. 16 and filed in state Superior Court in Danbury, Russell’s call for sanctions focuses on the defendant’s two “motions to strike,” filed in October and November last year. Russell cites 12 misrepresentations in Mingione’s first motion, including cited quotes that do not appear anywhere in the highlighted decisions, and cited cases that “do not exist.”