Questione giuridica chiave
Whether the IV office and cantonal court violated the duty to investigate by relying on existing medical records instead of ordering further examinations.
Decisione estratta
The existing file evidence was sufficient; no further investigations were required because the available medical assessments allowed an assessment of residual work capacity on the balance of probabilities.
Motivazione estratta
The court held that the investigation principle is satisfied once the relevant facts are sufficiently clear. If, after careful and objective evaluation, additional evidence could not change the outcome, refusing further evidence is permissible as anticipatory appreciation of evidence. The claimant did not show substantial doubts about completeness or correctness of the medical record.