Questão jurídica principal
Whether the tenants could still invoke annulability of the lease termination despite missing the 30-day conciliation deadline.
Decisão extraída
The annulability argument was time-barred because the tenants did not bring it before the conciliation authority within 30 days of receipt of the notice.
Fundamentação extraída
Articles 271 and 271a CO provide grounds for annulment, but Article 273(1) CO requires timely conciliation proceedings. A later additional submission cannot revive the lapsed right to rely on annulability.