Trademark (and service mark) rights arise from use. Registration can strengthen those rights. Enforcement is generally against someone using a...

You can't use the Spotify or Coca-Cola logos without permission. Logos would make it look like they approve or endorse your product. In theory,...

That's way too ambiguous. "[U]se their likeness" doesn't say who owns copyright. It might be right of publicity only. "[U]se" doesn't explain...

Good answer above. First thing is to read whatever Facebook has as terms and conditions, terms of use, or whatever. Every person participating...

Sometimes costumes are copyrighted and sometimes they show something that's a trademark. If it's a counterfeit costume, you'll be relying on...

Thank you for your service. I'd think it is worth your investigating NFL (and team) policies and asking, but doing it without their permission...

Depending on what the letter says, maybe you should get Reebok to agree. What you suggest has been done in the past as one component in resolving...

From your description it sounds like you're going in the wrong direction. There has to be direct infringement by someone for there to be vicarious...

Good points above. As far as "can you sue Etsy", read the Etsy Terms of Use to which you agreed when you signed up for Etsy. Look in the Terms...

It might be illegal to make a copy (download) but legal to sell a physical item (disk which happens to contain software) but it may be less simple...