임대차계약관계가 소멸된 이후 임차물을 계속 점유하였으나 본래 계약상의 목적에 따라 사용·수익하지 않은 경우, 임차인의 부당이득반환의무가 성립되는지 여부.
Whether a lessee's obligation for restitution of unjust enrichment is established if the lessee continues to occupy the leased object after the relationship of lease agreement is terminated but does not use it or make any profit for the purpose of the original contract.