Questão jurídica principal
Whether the public-law appeal was admissible against an interlocutory cantonal cassation decision
Decisão extraída
Yes, because the cantonal decision finally resolved the federal-law question of the appellant's participation as a coauthor, creating irreparable prejudice.
Fundamentação extraída
Although the cantonal judgment remanded the case, it definitively decided a point of federal law that could not be revisited later.