Plaintiff filed an ejectment suit against partnership firm on 1998. Suit was held for couple of years and then case was compromised by executing an unregistered lease agreement including all the partners as a tenant. On 2004, partnership firm became as a proprietor firm. Landlord received rent under proprietor firm for 4 years. Now again plaintiff sent a letter mentioning the proprietor for vacating the premises and filed an ejectment suit under transfer of property act against partnership firm. Sending a letter (legal notice) as a proprietor and now filing the suit against partnership firm saying as a partner including me... Can i take any defence in this case as a proprietor?