So I recently did a helmet mockup, at the request of a buddy, using a major fashion brand as the sticker on the side of the helmet. Thought it looked pretty cool, so I posted it to my twitter page, and almost immediately got a comment saying it was copyright infringement and the brand is notorious for legally pursuing those who use their logo without permission. I do this for fun, never been paid for photoshop work or anything, and didn't want anything to do with that, so I promptly pulled the tweet down.
My question is this... Are we all technically in copyright infringement every time we use a team's (or company's) actual logo in a mockup? Is a Cavs jersey mockup with sponsor patch technically infringing upon both the Cavs and Goodyear? What is the line, and how do we make sure not to cross it? Thanks, appreciate everyone's insight into this!