At any time prior to a final judgment, as defined in Section, a determination of whether the judgment, verdict upon which it was entered, or a finding upon which it was entered is to be binding upon a nonparty pursuant to this subdivision or whether such nonparty is entitled to the benefit of this subdivision may, on the noticed motion of any party or any nonparty that may be affected by this subdivision, be made in the court in which the action was tried or in which the action is pending on appeal. If no such motion is made before the judgment becomes final, the determination may be made in a separate action. If appropriate, a judgment may be entered or ordered to be entered pursuant to such determination.
Ca. Civ. Proc. Code § 1908