Kernrechtsfrage
Whether the Federal Supreme Court could review the challenge despite the unappealed 2010 appellate decision on validity of the notice.
Extrahierter Entscheid
The 2010 decision was incidental, not partial; the validity issue could still be reviewed together with the final decision under Article 93(3) LTF.
Extrahierte Begründung
Validity of the notice and prolongation are interdependent; the earlier appellate ruling merely decided a prejudicial question and remanded for the extension issue.