Kernrechtsfrage
Whether the pension fund had standing and a legally protected interest to challenge the cantonal judgment on invalidity degree and pension entitlement.
Extrahierter Entscheid
The pension fund lacked a legally protected interest because it was not involved in the proceedings before the IV office or the cantonal court; the invalidity assessment was therefore not binding on it.
Extrahierte Begründung
Under Art. 89(1)(c) BGG, standing requires a protected interest. In disability-insurance disputes, a pension fund that was not a party in the administrative and first-appeal proceedings is not bound by the invalidity assessment, so it has no interest in altering that assessment.