Here is a link I found check it out apples copyrights: Link hidden: Login to view I think you can sell the item just state not apple brand. I am not a lawyer or a copyrighter but I...

if you live in the united states your can get more information from your local city every state is different some cost money and some don't

I Don't think its illegal in the U.S. But if you are going to sell them make sure you state they are not Iphones and are not a apple brand if you don't this can get you in to some mess...