Question juridique clé
Whether the complaint against the interim order ordering a cost advance was admissible despite its interlocutory nature.
Solution extraite
The complaints were admissible because the order caused a non-reparable legal disadvantage.
Motifs extraits
A duty to pay a procedural cost advance deprives the person of control over assets and thus creates a legally irreparable disadvantage; this also applies to an advance for the other party's legal representation.