125Liability for costs

125  Liability for costs   Where, in an action to which section 120 applies, whether brought by the owner of the copyright or by the exclusive licensee, the other party is not joined as a plaintiff (either at the commencement of the action or at a later time), but is added as a defendant, the other party is not liable for any costs in the action unless he or she enters an appearance and takes part in the proceedings. Division 4—Proof of facts in civil actions