Kernrechtsfrage
Whether the order opening the inquiry was appealable as an instruction order causing irreparable harm.
Extrahierter Entscheid
No. The opening of the inquiry was only an instruction order and did not itself cause irreparable harm; the appellant could still raise all arguments on the merits.
Extrahierte Begründung
Under Art. 319 let. b ch. 2 CPC, by analogy via Art. 450f CC, an appeal against an instruction order is admissible only if irreparable harm is likely. The opening of an inquiry does not meet that threshold, unlike a psychiatric expertise order that directly affects personal liberty.