cour d'appel de lyon — juridiction du premier président — ordonnance de référé du 6 octobre 2025 — rg 25/00133

ChatGPT ai output used as evidencenon-probative ai analysis

I. Executive Summary

In an application to stay provisional enforcement of a commercial judgment, the applicant alleged that an acceptance/hand-over document was forged. The respondent argued that the applicant’s reliance on an analysis performed using ChatGPT had no probative value. The court rejected the request to stay provisional enforcement (without needing to assess the seriousness of the merits). It ordered the applicant to pay costs and an indemnity under article 700 of the code of civil procedure.

II. Conduct Analysis

The applicant relied on an analysis carried out using ChatGPT to support an allegation that a delivery/conformity report was forged. The opposing party challenged that AI-based analysis as lacking probative value, and the court proceeded on that basis in its assessment of the application.

III. Legal Foundations

Articles 514-3 and 524, code de procédure civile Article 700, code de procédure civile

IV. Key Facts

1) The respondent stated that the applicant had resorted to an analysis carried out using ChatGPT to argue that the contested document was a forgery. 2) The court found no sufficiently demonstrated risk of manifestly excessive consequences from continuing provisional enforcement and rejected the stay. 3) The applicant was ordered to pay an article 700 indemnity and the costs of the interim proceedings.

V. Consequences & Sanction

1) Request to stay provisional enforcement rejected. 2) Applicant ordered to pay costs and 800 euros under article 700.