Have the person that mailed the Demand for a Trial de Novo fill out an Affidavit of Service for the Demand and sign it in front of a notary. Many forms in Texas are not available in a fill-in-the-blank format.The case must be tried de novo in the county court. A trial de novo is a new trial in which the entire case is presented as if there had been no previous trial. Complete the form above called DEMAND FOR TRIAL DE NOVO. 1. Have an adult, not involved in the court case, mail a copy of the completed DEMAND. Right to demand a jury trial in a de novo hearing. Generally, small claims court allows one appeal that is de novo, meaning a new trial that is often done in a higher court. Plaintiff. Docket No. VS. Arbitration Date: Defendant. The arbitration hearing in the above-captioned matter was held on .