You question is whether you can file quit claims deeds after your father's death. If the deeds were properly executed under the state law where the real estate is, those deeds should remain valid under that state's law even after your father died. Therefore you could legally file and record them. Each state's law defines what is required to make a deed valid and recordable. In most all states, the deed must be signed and dated by the former owner, contain a legal description of the real estate, and be notarized.