"1. where he is one of a number of defendants in the courts for the place where any one of them is domiciled. 2. as a third party in an action on a warranty or guarantee or in any other third party proceedings, in the court seised of the original proceedings, unless these were instituted solely with the object of removing him from the jurisdiction of the court which would be competent in his case"
"Where related actions are brought in the courts of different Contracting States, any court other than the court first seised may, while the actions are pending at first instance, stay its proceedings. A court other than the court first seised may also, on the application of one of the parties, decline jurisdiction if the law of that court permits the consolidation of related actions and the court first seised has jurisdiction over both actions. For the purposes of this Article, actions are deemed to be related where that are so closely connected that it is expedient to hear and determine them together to avoid the risk of irreconcilable judgments resulting from separate proceedings."
"(1) ForArticle 6(1) of the Convention to apply there must exist between the various actions brought by the same plaintiff against different defendants a connection of such a kind that it is expedient to determine the actions together in order to avoid a risk of irreconcilable judgments resulting from separate proceedings. (2) (a) The terms "matters relating to tort delict and quasi- delict" used inarticle 5(3) of the Convention must be regarded as an independent concept covering all actions which seek to establish the liability of a defendant and which are not related to a contract within the meaning of article 5(1). (b) A court which has jurisdiction under article 5(3) over an action insofar as it is based on tort or delict does not have jurisdiction over that action insofar as it is not so based."
"May a defendant domiciled in the territory of a Contracting State be brought, in another Contracting State, before the court hearing an action against a co-defendant not domiciled in the territory of any Contracting State, on the ground that the dispute is indivisible rather than merely displaying a connection."
"49. In that connection the court also held in Kalfelis that a court which has jurisdiction underarticle 5(3) of the Convention over an action insofar as it is based on tort or delict does not have jurisdiction over that action in so far as it is not so based. 50. It follows that two claims in one action for compensation, directed against different defendants and based in one instance on contractual liability and in the other on liability in tort or delict cannot be regarded as connected."
"15(1) The other party to the contract is liable to the consumer for the proper performance of the obligations under the contract, irrespective of whether such obligations are to be performed by that other party or by other suppliers of services but this shall not affect any remedy or right of action which that other party may have against those other suppliers of services."