Is the repentance of one who disobeyed his father and invoked curses upon him accepted, after he repented, apologized, and asked his father to pray for the acceptance of his repentance?

It is by Allah's grace upon you that He has blessed you with repentance from your disobedience to your father. This indicates that your father's supplication against you was not answered. Do not preoccupy yourself with knowing whether your father's supplication against you was accepted or not, for this is from the Unseen. Rather, occupy yourself with being dutiful and kind to your father, and ask him to supplicate for you. Know that sincere repentance is accepted and wipes away what preceded it, for "one who repents from a sin is like one who has no sin." Indeed, Allah loves those who repent, rejoices in their repentance, and replaces their bad deeds with good ones.