Question juridique clé
Whether the complaint against the cantonal decision was admissible as an interlocutory civil matter with irreparable harm
Solution extraite
The appeal was admissible because an alleged defective service to Z. could no longer be cured in the final judgment and might affect enforceability abroad.
Motifs extraits
A later remedy would not repair the alleged defect; potential enforcement problems in the USA sufficed to establish irreparable harm.