Kernrechtsfrage
Whether the cantonal court had to apply the old Geneva procedural law or the CPC to costs in a case filed before 2011.
Extrahierter Entscheid
The pending proceedings remained governed by the former cantonal procedural law until final closure; the CPC did not apply to costs.
Extrahierte Begründung
Under Art. 404 para. 1 CPC, proceedings pending at entry into force of the CPC are governed by the previous procedural law until closure. Therefore costs had to be assessed under old Geneva law, not Art. 106 CPC.