On pain of inadmissibility, the party claiming that a legislative provision infringes the rights and freedoms guaranteed by the Constitution shall present this plea in a separate and reasoned written document, including on the occasion of an appeal against a decision settling all or part of the dispute in proceedings that have given rise to a refusal to refer the priority question of constitutionality.
The court must note of its own motion the inadmissibility of a plea that is not presented in a separate written statement setting out the reasons.
The other observations of the parties on the priority question of constitutionality must, if they are submitted in writing, be contained in a separate written statement setting out the reasons. Otherwise, they may not be attached to the decision referring the question to the Cour de cassation.