US court sanctions lawyers for filing AI-generated fake case laws in patent suit

A Kansas federal judge sanctioned five lawyers for Lexos Media IP after their patent-suit filings cited Hockett v. City of Topeka (2020), a case that exists in no federal database, plus fabricated quotes from real Federal Circuit decisions. The primary drafter admitted using ChatGPT as a "shortcut" while dealing with family medical emergencies; the court sanctioned him anyway.