Høyesterett receives first court brief with fabricated AI legal sources
In early 2025, a lawyer submitted a brief to the Norwegian Supreme Court in a civil case that contained laws and legislative history invented by an AI tool. Supreme Court staff discovered the non-existent sources during routine review. The court stated the lawyer had not checked the AI-generated sources before filing and raised the matter with the lawyer, but no sanctions were imposed. Høyesterett updated its attorney guide to require quality-checking of AI output.