my father got farming land in gujrat by his mother side grandparent. my dad was raised by grand parents since he was 7 months old.his grand father died when he was around 5 years old.after that in inheritance property grand mother's name and his name was put in.as grand mother is step mother of my dad's real mother and they didn't get along well. so grandmother did not want to give anything to her.at that his mother went to court for her right on property but they just put her name as a legal guardian. after around 25 years now wants a property again so she went to court again and now court cancelled the last heirship (INHERITANCE ) of grandmother.and my father and his parent did not live together so she will not give anything to my father and she most likely give everything to her 3 other children rather than my father. so what can we do now.please help.
THANKS