Key legal question
Whether the refusal to allow Care SA to join as a civil party was a final decision and therefore separately challengeable.
Extracted holding
For the appellant, the refusal was treated as a final decision because it definitively excluded it from the criminal proceedings and it would otherwise have no reliable later avenue of review.
Extracted reasoning
The Court preferred the plaintiff-centered approach: a person denied party status is not notified of later decisions and cannot safely wait to appeal with the final judgment; the irreparable-prejudice requirement is assessed relative to the appellant.