Države članice, institucije Skupnosti in vse druge fizične ali pravne osebe lahko v primerih in pod pogoji, določenimi v poslovniku, sprožijo postopek tretje stranke, s katerim lahko ugovarjajo zoper sodbo, ki je bila izdana v zadevi, pri kateri same niso bile udeležene, sodba pa škodi njihovim pravicam.
Member States, institutions of the Communities and any other natural or legal persons may, in cases and under conditions to be determined by the Rules of Procedure, institute third- party proceedings to contest a judgment rendered without their being heard, where the judgment is prejudicial to their rights.