Kernrechtsfrage
Whether the insured person was entitled to a higher invalidity pension from 1 December 2003 because her degree of invalidity had changed.
Extrahierter Entscheid
No. The cantonal findings that her health and earning capacity had remained unchanged were not manifestly inaccurate, so no relevant change in invalidity was established.
Extrahierte Begründung
The Federal Court deferred to the lower court's comprehensive evidentiary assessment, notably the ZMB expertise, and found no arbitrary evaluation in preferring that report over other medical opinions. Without a legally relevant change in invalidity, an increase in pension is excluded.