No general obligation exists for Member States to halt national ratification of mixed agreements when their compatibility with EU is questioned before the CJEU. (europeanlawblog.eu)
On the other hand, the OTIF case reaffirms that the conclusion of EU agreements as mixed agreements does not prevent subsequent exclusive EU implementing action. (europeanlawblog.eu)
Mixed agreements require ratification by all Member States and conclusion by the EU. (europeanlawblog.eu)