Kernrechtsfrage
Whether the refusal to revise the invalidity pension was unlawful because the insured's health had objectively worsened.
Extrahierter Entscheid
No objective deterioration was shown that would justify increasing the half-pension to a full pension.
Extrahierte Begründung
The federal court upheld the cantonal court's assessment that the SMR medical report was more convincing than the treating physician's view; the complaints and later deterioration did not establish a relevant change as of the disputed decision.