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.

The court discusses the conditions under which a party may be estopped from raising a ground for refusal of enforcement under the Convention or has waived the right to raise it.

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.

Public policy: The court discusses alleged violations of a fundamental rule of due process in the arbitration on the recognition and enforcement of an arbitral award, including the failure to communicate the names of the arbitrators, the failure to send copies of reports or letters filed in the arbitration, etc.