Dear Concerned,
As your father is the owner of the property your father can easily take a stern step. If you go legal i.e filing an eviction suit - this will hang on for years.
Your father should
a) Give a Public notice in News paper stating ending of all ties with your uncle
b) File a complaint to the concerned police station in reference to the behaviour of your uncle
c) Once the above two are done and next time your uncle goes out of the house dont let him come back. If he creates nuisance call police and use the Public notice and Complaint filed as your sheild.
Your uncle will be in catch 22 situation as police will not be able to put him back in your house and he will have to file a civil case (which he would not be able to do immediately)
Best of Luck