Do I have to ask for permission to use real company logos for advertising props in the world in my sports game? I'm making a simple turn based Android ball flicking soccer game and I was thinking of creating a theme in a sports game, like soccer for example, usually had advertisement banner on walls and a bit realistic but cartoony. It is usually encountered in most sports based game in any gaming platform. I have a question regarding this topic. Is it required to ask a permission to used some recognized ad banner designed walls (e.g. Adidas, Samsung, McDonalds, etc.) to be used as props for the game field like this one for example?