Key legal question
Whether the nullity complaint was admissible against the stay order under Art. 9 IPRG.
Extracted holding
The stay order was not a final cantonal decision and therefore could not be challenged by nullity complaint.
Extracted reasoning
An order under Art. 9 IPRG is an interlocutory decision on international jurisdiction. Here, a Thurgau supervisory complaint offered full review by the cantonal higher court, so the district court did not act as the last cantonal instance with free review.