If a tenant presents valid defenses during the eviction process, landlords should thoroughly review the defense, consult with an attorney, and gather relevant evidence such as maintenance records and communication logs. Ensuring compliance with all legal requirements and preparing to present a strong case at the court hearing is crucial.  Landlords should also consider negotiating a settlement to avoid prolonged legal battles and follow any court orders if the ruling is in the tenant's favor. This approach helps landlords address tenant defenses effectively while adhering to legal standards.