The court discusses the principle that the procedure for the enforcement of awards under the Convention is governed by the lex fori, as well as procedural issues (such as the competent enforcement court) not falling under the specific cases of ¶¶ 302-307.
Procedure for enforcement in general
506
Invalidity of the arbitration agreement: The court discusses the law applicable to the validity of the arbitration agreement at the enforcement stage.
Law applicable to the arbitration agreement
507
Invalidity of the arbitration agreement: The court discusses other cases of invalidity of the arbitration agreement, including that there was no agreement at all or that the party was not a signatory thereto, that the incorrect arbitral institution was chosen, etc.
Miscellaneous cases regarding the arbitration agreement