Kernrechtsfrage
Whether the IV office had standing to appeal despite the cantonal court's freedom not to be bound by party requests
Extrahierter Entscheid
The appeal was admissible; the office could raise the issue even if the requested outcome would worsen the insured person's position.
Extrahierte Begründung
Art. 61 lit. d ATSG prioritizes objective legality over a party's subjective interest; the office may raise before the Federal Court an argument already made below.