Questione giuridica chiave
Whether the claimant's invalidity pension began before 2007-01-01, in particular on 2000-12-01.
Decisione estratta
No earlier pension start was proven; the legal onset of entitlement remained 2007-01-01.
Motivazione estratta
The Federal Court held that the decisive point is when a medically relevant incapacity of at least 20% first appeared. The canton could rely on the multidisciplinary expertise and the corroborating view of the treating physician N., which placed this threshold at the beginning of 2006; the claimant did not show any arbitrary appraisal of evidence.