Question juridique clé
Whether the appeal against the procedural order to take expert evidence was admissible under Art. 93 para. 1 lit. a BGG
Solution extraite
The challenged order was an interlocutory decision that could not cause irreparable legal harm; the appeal was therefore inadmissible.
Motifs extraits
The appellant’s own argument showed that any dispute about the expert’s statement on natural causation could still be raised later in proceedings and, if necessary, before the Federal Supreme Court in an appeal against the final judgment. A legally irreparable disadvantage was thus absent.