1. File a suit for eviction after sending eviction notice. Thereafter file eviction suit which is expected to be heard ex-parte.
2. Do not remove his articles and take possession of fault by force. He may file criminal case of theft and burglary.
3. Good. Send the notice and summons of eviction suit additionally to the company address.
4. You can file eviction suit after giving him a full calendar month of time to vacate the premises.
5. Yes, going to court is the most suitable and wise option.