Can my landlord sue me if he does not have a copy of a lease?

My old room mate and I moved into a duplex last February. Our landlord was shady from the get go. We met him in a Starbucks coffee shop and signed a four month lease that was written by my room mate on a piece of yellow notebook paper, the only copy of which is in my possession. Our lease expired, my room mate moved out and another one moved in but another lease was not signed. During the period of one moving in and one moving out, the carpet was ripped up in a 4x4 (roughly) section. We had a verbal agreement that the 500 dollar damage deposit would be enough to cover the cost of replacing it. We moved out in August, and now he is trying to sue me for damages. Can he win a case in court without having a copy of any lease what so ever? Or a formal walk through checklist for that matter?