Louisiana Code of Civil Procedure Tit. VIII, Art. 4546. Fixing of hearings or trial

A hearing or trial in an interdiction proceeding shall be fixed and notice shall be served in the manner prescribed for summary proceedings. In addition, such notice shall be served on the defendant in the manner prescribed by Article 4543(A). Except as provided in Article 4549, the petitioner shall mail a copy of the order fixing a hearing or trial by first-class United States mail, postage prepaid, to the last known address of each other person named in the petition at least ten days prior to the hearing. Failure to mail a copy of the order to any such person shall not affect the validity of the proceeding, but may subject the petitioner or his attorney to sanctions.