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