Såfremt et sådant spørgsmål rejses under en retssag ved en national ret, hvis afgørelser ifølge de nationale retsregler ikke kan appelleres, har retten pligt til at indbringe sagen for Domstolen.  
Where any such question is raised in a case pending before a court or tribunal of a Member State against whose decisions there is no judicial remedy under national law, that court or tribunal shall bring the matter before the Court.  