Article R53-21-17 of the French Code of Criminal Procedure
The President of the Examining Magistrate’s Chamber, after requesting written submissions from the Public Prosecutor, makes a reasoned order within three months. This order is notified to the Public Prosecutor and, by registered letter with acknowledgement of receipt, to the interested party. It may only be appealed to the Supreme Court if it does not satisfy, in form, the essential conditions for its legal existence.