Question juridique clé
Whether the administrative appeal against the residence-permit decision was admissible despite the permit having expired.
Solution extraite
The challenge to the revocation/lapse of the permit was moot because the permit had already expired before the filing, but the decision could still be treated as a refusal to renew; in that respect the administrative appeal was inadmissible because no entitlement existed.
Motifs extraits
A residence permit can be challenged if a federal right or treaty grants entitlement, but after marital separation the right under Art. 17(2) LDDS ends unless the separation is brief and resumption of cohabitation is seriously contemplated. Those conditions were not met.