Question juridique clé
Whether the service of the German default judgment was non-arbitrary and valid for Lugano Convention enforcement purposes.
Solution extraite
The service finding was not arbitrary; the cantonal court could rely on implied or apparent authority for receipt of the document.
Motifs extraits
The Weibel's explanation could reasonably be understood as referring to service for the appellant, and the prior receipt of the payment order and immediate objection by the W. AG made the finding of apparent or tolerated authority plausible.