Questione giuridica chiave
Whether the public-law appeal was admissible despite the expired residence permit.
Decisione estratta
The challenge against the revocation was inadmissible because the permit had already expired, but review of the renewal issue remained possible.
Motivazione estratta
A person lacks a protected interest in overturning a revocation once the permit has expired; however, the Court could still examine whether a right to renewal existed.