Commercial land been occupied by cousin

Your father has every right to get his 50%.  That is the basic thing.  But to know as to how to go about it, I will suggest, better get in touch with a lawyer who is well versed in property law, show the documents that are in your hands, discuss the matter, and then take the further steps.  You should not waste time.  You should start the case when your father is still alive.  Your father will be in a better position to give various details that the lawyer may like to know.

Hi Ramesh, thanks for your response,. The land has been inherited from grandfather and now on father and uncles's name as joint ownership with clear division that left side 50% belong to father and right 50% to my uncle. They were doing joint sweet/bakery shop business occupying complete land/building, employing 10 other labour. Now both my father and uncle left the business and handed over to cousin. My cousin brother doing the business. The division of land happend when my grandmother was alive and made the seperate deed to divide the land between brothers. Now when my father asking the peoperty which belong to him, they uncle/cousin brother are not ready to vacate it. And claiming it him as he is the only son/male in our generation. Let me know if you need any more information.

Hi Ramesh, Ealier the business was in joint venture but from last few years when father came out of business, cousin the the sole owner of the running business on the paper as well. So to answer your question, No its not joint partership. But the land is still on his father (uncle) and my father's name.