In Mazaheri v Law Society of Ontario, 2026 ONLSTH 112, the Law Society Tribunal awarded full costs, in the amount of $31,150, against the respondent taking into consideration his misuse of artificial intelligence generated motion materials. The decision provides a snapshot of the current state of artificial intelligence use in litigation and creates a necessary caution to legal professionals and self-represented litigants about the real consequences of AI misuse.
Factual Background
On September 23, 2025, Mazaheri brought a motion to vary or remove the interlocutory suspension of his law license.1 At the proceedings management conference on November 10, 2025, along with a notice of motion, affidavit, and factum, Mazaheri filed supplementary materials.2 Each of the materials Mazaheri produced at this conference were prepared using generative AI software that hallucinated every proposition of law.3
