The court shall be seised of the claim made by writ by the delivery to it of the document completed with the information provided for in Article 684-1 or, as the case may be, in Article 687-1, where appropriate accompanied by proof of the steps taken to serve it on the addressee.
If it is not established that the addressee of a document had knowledge of it in good time, the court hearing the case may only rule on the merits if the following conditions are met:
1° The document was transmitted in accordance with the methods provided for by the applicable European regulations or international treaties or, in the absence of such methods, in accordance with the provisions of the articles 684 to 687;
2° A period of at least six months has elapsed since the document was sent;
3° No proof of delivery of the document could be obtained notwithstanding the steps taken with the competent authorities of the State where the document must be delivered.
The judge may, of his own motion, prescribe any additional steps to be taken, in particular granting a letter rogatory to any competent authority for the purpose of ensuring that the addressee has been made aware of the document and informing him of the consequences of failing to do so.
However, the judge may immediately order any provisional or protective measures necessary to safeguard the rights of the applicant.