I want to make sure I do not get sued for buying a collegiate or pro sports logo sticker and putting it on my item to resell..--Answer1:Thats not copyright infringement. As long as you dont claim that its an official Dallas Cowboys cooler or endorsed by the Green Bay Packers or something, youre fine..--Answer2:Actually, if youre thinking of doing this for profit (that is selling hundreds or thousands of coolers) then you might have a problem. You would need to contact the trademark or copyright holder. In some cases, you can become a licensee (and of course pay a small fee to them)..--Answer3:As long as stickers are approved, you are fine. But you may get some hassle along the way if you are advertising many of these items.