Kernrechtsfrage
Whether the Luzern courts had jurisdiction despite Heuer's claim that he no longer had domicile or business domicile in Sursee when suit was filed.
Extrahierter Entscheid
Jurisdiction in Sursee was valid because the parties had agreed to a contractual forum there.
Extrahierte Begründung
A waiver of the constitutional domicile forum is permissible. The later closure of the branch is irrelevant once a valid contractual forum has been established.