Query pertaining to my father’s share in grandfather‘s property

My grandfather has 2 sons. When my father was 12 years old at that time my grandfather will all property to my elder father (elder brother of my father). 30 years later at the time of family separation my father came to know all property were belong to my elder father (elder brother of my father). My grandfather got these property from his father i.e. (my father’s grandfather). Now my question is can we get my father’s share if we go to court for civil suit as it was my great grandfather’s property. Please suggest I need to do. I am belonging to Hindu family.