FL-375State (JC)Fillable

Summons (Joinder)

Judicial Council of California · Family Law

Verified current as of August 1, 2026

This form notifies a person that they are being added as a party to an existing family law court case. Parents, guardians, or attorneys use it to bring someone into a custody, support, or other family law matter that's already in progress.

This form has fillable fields — you can complete it directly in the viewer on the right.
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