California Code, Code of Civil Procedure - CCP § 391.8

(a) A vexatious litigant subject to a prefiling order under Section 391.7 may file an application to vacate the prefiling order and remove his or her name from the Judicial Council's list of vexatious litigants subject to prefiling orders.  The application shall be filed in the court that entered the prefiling order, either in the action in which the prefiling order was entered or in conjunction with a request to the presiding justice or presiding judge to file new litigation under Section 391.7.  The application shall be made before the justice or judge who entered the order, if that justice or judge is available.  If that justice or judge who entered the order is not available, the application shall be made before the presiding justice or presiding judge, or his or her designee.

(b) A vexatious litigant whose application under subdivision (a) was denied shall not be permitted to file another application on or before 12 months has elapsed after the date of the denial of the previous application.

(c) A court may vacate a prefiling order and order removal of a vexatious litigant's name from the Judicial Council's list of vexatious litigants subject to prefiling orders upon a showing of a material change in the facts upon which the order was granted and that the ends of justice would be served by vacating the order.