Nippon Life Insurance Company of America filed suit against OpenAI on March 4, 2026 in the Northern District of Illinois, alleging that ChatGPT functioned as an unlicensed attorney for a former disability claimant. According to the complaint, the claimant uploaded correspondence from her own lawyer into ChatGPT after her case had already been settled and dismissed with prejudice; the chatbot allegedly validated her complaints, encouraged her to fire her attorney, and helped her draft 44 post-settlement filings attempting to reopen the case, including a filing citing a fabricated case. The suit alleges tortious interference with contract, abuse of process, and unauthorized practice of law, seeking $300,000 in compensatory damages and $10 million in punitive damages.