Artikel 5

1. The court or courts of a Contracting State designated in an exclusive choice of court agreement shall have jurisdiction to decide a dispute to which the agreement applies, unless the agreement is null and void under the law of that State.
2. A court that has jurisdiction under paragraph 1 shall not decline to exercise jurisdiction on the ground that the dispute should be decided in a court of another State.
3. The preceding paragraphs shall not affect rules –
a) on jurisdiction related to subject matter or to the value of the claim;
b) on the internal allocation of jurisdiction among the courts of a Contracting State. However, where the chosen court has discretion as to whether to transfer a case, due consideration should be given to the choice of the parties.