Ancillary Jurisdiction
What results when the party suing (plaintiff or petitioner) changes the complaint he/she has filed. it must be in writing, and can be done before the complaint is served on any defendant, by agreement between the parties (usually their lawyers), or upon order of the court. complaints are amended to correct facts, add new causes of action (bases for the lawsuit), substitute discovered names for persons sued as “does,” or to properly plead a cause of action (the legal basis for suing) after the court has found the complaint inadequate.
