Can AT&T lock a stolen iPhone?

I plan on selling some iPhones on ebay that I just got factory unlocked. They are iPhone 4 GMS. I have heard a lot about sellers getting scammed on ebay, and ebay usually sides with the buyer. Can I have an unlocked iPhone reported stolen if it has no account associated with it? The service will be transferred to a new phone first. I was hoping that if someone tries to scam me out of a phone I can at least have it disabled by AT&T. Can they do that?

No, you can't have at&t disable a unlocked iphone, I'm not to sure what you are worried about I have bought and sold plenty of iphones on ebay just be sure to list everything accurately and honestly in your listing and there's no way that ebay (most likely paypal) will side with the buyer if you are being honest and truthful! Good luck do not worry you should be safe on ebay as long as you are honest from the start!

No you can sell them without issue. If they are stolen or have been reported as stolen, they most likely are blocked (even though they may be unlocked) in the country of origin (US)