My grandfather has 3son and 1 daughter, He(grandpa) gave my father a land and home, my father registered that property in 2001 during his presence(Grandfather passed away in 2006).And none of my father's brothers and sister registered except my dad.
And Now my fathers brothers and sister are registering their land in their name and saying that registration did by grandfather is not valid because the land is in the name my great grandfather.
My question is:
1)We lived in that land for 16 years , can anyone file case against it.
2)Land document, patta, chitta everything is in name of my dad.