Enforcement proceedings concerning a Ukrainian award raised a constitutional challenge to the burden of proving defective notice and inability to defend.
Holding and outcome
The Constitutional Court declared the referral inadmissible. Paragraphs 22–27 compare the Civil Procedure Code with Convention Article V(1)(b): the debtor bears this objection’s burden, while proper notice and a reasonable opportunity to defend remain required.
Limits of the holding
The Constitutional Court did not decide the enforcement application or itself authorise execution. This was an admissibility ruling, not the final disposition of the Ukrainian award.