Article R615-1 of the French Intellectual Property Code
Where the court considers, including during the course of proceedings, that the claim falls within the exclusive jurisdiction of the unified patent court pursuant to Articles L. 615-17 and L. 615-18, it shall declare of its own motion that it does not have jurisdiction and shall refer the parties back to the court for further proceedings. When, in the course of proceedings, unitary effect is conferred on the European patent…