Question juridique clé
Whether the appeal against the cantonal remand decision was admissible under Art. 93 BGG.
Solution extraite
The remand decision was an interlocutory decision; neither the exception for immediate final judgment nor the exception for irreparable legal harm was satisfied.
Motifs extraits
The Federal Supreme Court could not render a final decision because contractual breach and causation still had to be decided by the cantonal courts. The alleged prejudice was removable by a later favorable decision and a mere prolongation or increase of proceedings is only a factual disadvantage.