Where, in the course of civil or commercial proceedings relating to an investigative measure requested prior to any trial on the merits or in the course of proceedings on the merits, reference is made to or the communication or production of a document is requested which is alleged by a party or a third party or which has been deemed to be of such a nature as to infringe a business secret, the court may, of its own motion or at the request of a party or a third party, if the protection of such secrecy cannot otherwise be ensured and without prejudice to the exercise of the rights of defence :
1° Take cognisance of this document alone and, if it considers it necessary, order an expert report and seek the opinion, for each of the parties, of a person authorised to assist or represent them, in order to decide whether the protective measures provided for in this article should be applied;
2° Decide to limit the communication or production of this document to certain of its elements, order its communication or production in summary form or restrict access to it, for each of the parties, to a maximum of one natural person and one person authorised to assist or represent that party;
3° Decide that the hearings will take place and that the decision will be handed down in chambers;
4° Adapt the reasons for its decision and the arrangements for publicising it to the requirements of protecting business secrecy.