Questione giuridica chiave
Whether the appeal was admissible despite the respondent's objection that no immediate and irreparable harm was shown.
Decisione estratta
The appellants sufficiently showed a non-repairable prejudice, especially from the clause allowing anticipatory use of information for a supplementary mutual assistance request.
Motivazione estratta
Interim decisions on foreign participation are separately appealable only if they cause immediate and irreparable harm. Here, the challenged clause could cause a non-repairable breach of mutual assistance rules, so admissibility was met.