Suit for declaration & possession of Immovable Property.

There is my ancestral and in Jalna city. This land is a gift from Nizam to my ancestors. I have its order of gift called Kabala issued by the the Office of Land records i.e. Mir MajLis. The aforesaid land has been the issue of dispute due to its adverse possession by our neighbours. They(their ancestors) have created PR cards on their names by froad in 1975 by giving an affidavit and registered themselves as the owner. From then , they are using the property and earning rent and profits. In 1997 my neighbours filed a case for permanent injunction against my father in the disputed land. They have not produced any evidence to support their claim of ownership in a case that they filed against my father in 1997. The same happened in high court as well. High court too has raised doubt about their ownership rights. But my father has submitted not only Kabala order but also the construction permissions that my grandfather obtained for construction of house on that land. The maps and fees receipts were also produced by my father. And court therefore suspected the ownership right of our neighbour on that land. Finally they lost the cases and appeals in all courts till 2013 and all decisions came in favour of my father. Meanwhile one of my neighbour sold half of the disputed land to a 3rd party who in 2006 who constructed a residential building there even ifthe case was in High court. Now today . All cases are over. But the lands are still in there possession. My father can not go to court due to his age. I want to take back my ancestral land. How should I initiate to declare my ownership rights and take possession of all the land? How could I file the suit and where should I go? Please help me I'm a middle class graduate fighting for my individual rights.