Article 1004 of the French Code of civil procedure
Where the statement of appeal does not contain a statement, even a summary statement, of the grounds of appeal relied on against the contested decision, the appellant must, on pain of inadmissibility pronounced ex officio, send to the registry of the Cour de cassation, no later than one month from the date of the statement, a factum containing such a statement. This factum may be drawn up by the party’s…