Question juridique clé
Whether the insured person had a sufficient legal interest to seek declaratory relief against the insurer's refusal to take back the health insurance card.
Solution extraite
No sufficient protectable interest existed because the duty to use the card is a general abstract rule; any sanction can be challenged later if imposed.
Motifs extraits
A declaration under Art. 5(1)(b) VwVG must concern concrete individual rights and duties. The challenge targeted an abstract legal situation, and the appellant could later contest any fee or sanction arising from non-use.