A party against which an award or a measure is invoked cannot oppose its recognition and enforcement unless the party proves that(1) one of the parties did not have the capacity to enter into the arbitration agreement;
(2) the arbitration agreement is invalid under the law chosen by the parties or, failing any indication in that regard, under the law of the place where the award was made or the measure decided;
(3) the procedure for the appointment of an arbitrator or the arbitration procedure was not in accordance with the arbitration agreement or, failing such an agreement, with the law of the place where the arbitration proceedings were held;
(4) the party against which the award or the measure is invoked was not given proper notice of the appointment of an arbitrator or of the arbitration proceedings, or it was for another reason impossible for that party to present its case;
(5) the award pertains to a dispute not referred to in or covered by the arbitration agreement, or contains a conclusion on matters beyond the scope of the agreement, in which case only the irregular provision is not recognized and declared enforceable if it can be dissociated from the rest; or
(6) the award or measure has not yet become binding on the parties or has been annulled or stayed by a competent authority of the place where or under whose law the arbitration award was made or the measure decided.