The petition forms are available on the Judicial Council of California's website. Each petition type requires multiple forms and has specific instructions.Step 1: After completing the Civil Case Cover Sheet (Judicial Council form CM-010), find the exact case type in. (When you click this link, you will be taken to the California Courts website). Information specific to filing Adult Name Change. Petition in Los Angeles County Superior Court. Please contact the Court at (213) 830-0803 for assistance in this matter. You may also visit The Los Angeles Superior Court Website. Verify statements for legal matters and business transactions using our California general affidavit form template. In a divorce or annulment case: request name change during case or at judgment.