Questione giuridica chiave
When did the incapacity of work causing the invalidity begin for purposes of Art. 23 LPP?
Decisione estratta
The decisive incapacity already existed at least by 2000 and no later than September 2001, while the insured relationship still existed.
Motivazione estratta
The medical record showed a progressive deterioration from 2000 onward; the cantonal court erred by fixing April 2002 as the onset merely by following the AI decision.