I have purchase one house in 2010 with five tenants( all of them are there since 1965 ) in kolkata location , I am being paid monthly rent by five tenants as per english caleder months and I am issuing rent receipt to them since 2010 July , but I have never taken their signture on the counter part of the rent receipt , Recently I have been in a legal litigation with one of my tenants and he is denying the fact that I am landlord of that house as he has never paid rent to me and as he is staying since 1965 i.e. >12 years so he has got the ownership of that particular dwelling unit of particular building.
Now how can i defend him.