Except as provided in rule 3.402, if a Civil Case Cover Sheet (form CM-010) that has been filed and served designates an action as a complex case or checks a case type described as provisionally complex civil litigation, the court must decide as soon as reasonably practicable, with or without a hearing, whether the action is a complex case.
With or without a hearing, the court may decide on its own motion, or on a noticed motion by any party, that a civil action is a complex case or that an action previously declared to be a complex case is not a complex case.
Cal. R. Ct. 3.403