California Code, Code of Civil Procedure - CCP § 664.5

(a) In any contested action or special proceeding other than a small claims action or an action or proceeding in which a prevailing party is not represented by counsel, the party submitting an order or judgment for entry shall prepare and serve, a copy of the notice of entry of judgment to all parties who have appeared in the action or proceeding and shall file with the court the original notice of entry of judgment together with the proof of service. This subdivision does not apply in a proceeding for dissolution of marriage, for nullity of marriage, or for legal separation.

(b) Promptly upon entry of judgment in a contested action or special proceeding in which a prevailing party is not represented by counsel, the clerk of the court shall serve notice of entry of judgment to all parties who have appeared in the action or special proceeding and shall execute a certificate of service and place it in the court's file in the cause.

(c) For purposes of this section, “judgment” includes any judgment, decree, or signed order from which an appeal lies.

(d) Upon order of the court in any action or special proceeding, the clerk shall serve notice of entry of any judgment or ruling, whether or not appealable.

(e) The Judicial Council shall provide by rule of court that, upon entry of judgment in a contested action or special proceeding in which a state statute or regulation has been declared unconstitutional by the court, the Attorney General is promptly notified of the judgment and that a certificate of that service is placed in the court's file in the cause.