An asymmetric jurisdiction clause is valid even where one party may sue only in the single court designated by the clause, while the other may also sue in any other competent court. That is so only if: (1) the clause designates courts of one or more EU Member States or of states that are parties to the 2007 Lugano Convention; (2) it identifies objective factors precise enough for the court seised to determine whether it has jurisdiction; and (3) it is not contrary to Articles 15, 19 or 23 and does not derogate from exclusive jurisdiction under Article 24.