Question juridique clé
Whether the Federal Tribunal could hear an appeal against the cantonal decision confirming refusal to admit evidence at trial.
Solution extraite
The appeal was inadmissible because the challenged ruling was an incidental decision on evidence that did not cause irreparable harm.
Motifs extraits
Decisions on evidence-taking are incidental decisions; under Art. 93(1) LTF they are only appealable if they cause irreparable harm, which was not shown.