Expert Witness Blog

Expert insights, legal technology trends, and best practices for working with expert witnesses

An Expert’s ChatGPT Log, Split in Two: Nevada Court Orders the Case Summaries Produced but Shields the Prompts, Deposition Prep, and Draft Work

An expert admitted at deposition that he used ChatGPT to research and draft his report. A Nevada federal judge then sorted his 40-page chat log by category: ChatGPT’s case summaries go to the other side, while his prompts, deposition prep, and draft work stay protected.

AI Cases

Court Orders Expert to Turn Over the AI Prompts Behind Her Report

Conservation Law Foundation, Inc. v. Equilon Enterprises LLC d/b/a Shell Oil Products US, Inc. et al., No. 3:21-cv-00933-VDO (D. Conn.) - Judge Thomas O. Farrish, order entered May 18, 2026 (granting ECF No. 941) - A federal court in Connecticut ordered an expert witness to turn over the AI prompts behind her report, ruling that generative-AI methodology is discoverable like any other expert reliance material.