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Court Rules

California Rules of Court

Rule 3.401. Complex case designation

Cal. Rules of Court, rule 3.401

Current text effective January 1, 2007.

A plaintiff may designate an action as a complex case by filing and serving with the initial complaint the Civil Case Cover Sheet (form CM-010) marked to indicate that the action is a complex case.

#History

Rule 3.401 renumbered effective January 1, 2007; adopted as rule 1810 effective January 1, 2000; previously amended effective July 1, 2002, and July 1, 2004.

What this rule requires

Filing Timing and Cure Windows

  • filing and serving with the initial complaint the Civil Case Cover Sheet (form CM-010) marked to indicate that the action is a complex case.

Service and Proof of Service Rules

  • filing and serving with the initial complaint the Civil Case Cover Sheet (form CM-010) marked to indicate that the action is a complex case.

Document Filing Requirements

  • the Civil Case Cover Sheet (form CM-010) marked to indicate that the action is a complex case.

Official text: courts.ca.gov , checked October 19, 2026.