My father had two sons including me and two daughters. He had made a registered will in the sub registrars office bequething all of his movable and immovable assets to my brother and did not give anything to me and my sisters. He had two residential houses which were his self earned and agricultural land which was ancestral. Now he has given an application for transfer of ownership of the property in his name to the tehsildar and the two witnesses of the will have also given statements that the will was made in their presence by my father in full senses.
Now can we challenge the said will and if so on what grounds?
I only want to challenge it if there is likelihood of anything going in my favour because as of now i have no proof to show that the will was made out of undue influence since it is a registered will having the photograph of my father and the witnesses clicked at the sub registrars office.
Please give me some advice in this regard.