After my grandfather died in 1996, my uncle's and father got there inheritance share via panchayat in the same year. my elder uncle (who died in 2004) sold all of his share to my father in 1996, and the property is now in my father's name and he is taking care of it .My elder uncle's son has now stated that he will not accept his father's sales and wants his share in the property ( in the name of inheritance and right of grandson in the property of grandfather)
Please advise on what to do in this situation.