Kernrechtsfrage
Whether the public-law appeal against the Geneva president's order on the filing fee was admissible and immediately reviewable.
Extrahierter Entscheid
Yes. The order was an incidental decision causing irreparable prejudice because payment was required under pain of inadmissibility, and the procedural requirements were met.
Extrahierte Begründung
A party compelled to pay a fee, like one compelled to provide security, suffers irreparable harm if it must comply immediately; therefore the decision could be challenged directly.