Questione giuridica chiave
Whether the 3 May 1999 refusal decision was served on the insured person
Decisione estratta
Service was established on the basis of the records and surrounding indications; proof by predominant probability sufficed.
Motivazione estratta
For administrative mass proceedings, service-relevant facts need only be shown with predominant probability, not strict proof. The lower court's assessment was not evidently incorrect.