Kernrechtsfrage
Whether Art. 7 GestG allowed Zurich jurisdiction over X. AG as co-defendant of C. despite the AG not being bound by the forum selection clause
Extrahierter Entscheid
Yes. Art. 7 GestG also covers simple passive joinder, and the Zurich court could hear the claim against X. AG because the claims shared the same factual and legal basis.
Extrahierte Begründung
The claims against both defendants arose from the same development project and the same consortium contract. For jurisdiction, only the plaintiff's allegations matter. Art. 7 GestG is not limited to necessary joinder and may apply even where the forum agreement binds only one defendant.