Key legal question
Whether the IV office had standing under Art. 49 para. 4 ATSG to object to the accident insurer's pension decision and appeal the objection decision.
Extracted holding
The IV office was not entitled to object or appeal against the accident insurer's pension decision, because the accident insurer's invalidity assessment does not have absolute binding effect on the IV office.
Extracted reasoning
The unity of the invalidity concept does not create a priority of one social insurance branch over another. Each insurer must assess invalidity independently, and the law does not give the IV office a special right to challenge an accident insurer's pension decision merely because the findings may later be relevant.