he permanent injunction granted in 2017 only restricts you from throwing the tenant out forcibly; it does not grant them a license to live there indefinitely without paying rent. 

2) , you must send a  legal notice giving the tenant 15 days  to vacate, ideally expiring at the end of the tenancy month.also claim  arrears of rent. 

3) if tenant fails to pay arrears within 15 days of receipt of notice file eviction suit 

4) Under the Limitation Act, you can only legally recover past arrears of rent for the last 3 years from the date you file the suit. Any rent owed before that is legally barred by time.

You can definitely ask the court to grant mesne profits from the date the notice period expired until the day the tenant actually hands over the physical possession.