Property Issue

As per the documents your father is the owner of that property. these documents have no value till he is alive.

To some extent it valid say 10 to 30 percentage weightage will be given to its contenst if established that your father conciously signed it. Law is not mathematics. Findings depends upon several factors even conduct of the party play a role in deciding an issue raised by it. If my answer is convincing you then please give me Rank 5 and follow me.

whats the non registered document. kindly be precise, However, non registered document will not be a valid document and your father may remain the sole owner of the properties if you dont have any registered title document in your name

Every document has its own evidentiary value. The document which you refer will be evidentiary value when this will be proved in the Court.