Researcher Damien Charlotin maintains a public “AI Hallucination Cases” database that tracks legal decisions in which a court or tribunal addressed generative-AI-produced hallucinated content - typically fabricated case citations, but also other AI-generated material - in more than a passing reference. The database catalogs only cases where the court found (or implied) that a party relied on hallucinated content, not the wider universe of all fake citations. It has grown to over 1,500 identified cases worldwide and has itself been cited in news coverage and in court decisions dealing with hallucinated material. The 2023 Avianca sanctions case in New York was an early, widely publicized example of the pattern the database records.