If parents get separated and the father clearly says that he does not want to be a part of his daughter’s marriage, is his permission still required for the daughter to marry someone?
Such statement can be because of anger and he might repent later. He should be asked again when his daughter is about to get married. If he says then that he is not concerned, then his father ( her paternal grand father) should be asked. If he is not alive or not available, then she can decide her marriage by herself.
Wassalam.