my father had 4 sisters. 1st sister married on 1962 and dead on 1980 . she left two children and husband as her heirs.
my grandpa died on 1979. 0n 1985 all the remaining three sisters make a registred settlement in favour of my father and he leftout to get sign from my aunts heirs as on that day said that as the sister dead no need for sign from the heirs.
now on 2011 the aunts son had filed a petition that they have right over the property. till now they know about all the proceeding of my father and they didnt do anything for that property. all the revenue records are in the name of my father.
what is the solution and what the indian law tell about this. kindly advice me
