It depends on the mashup itself and whether it infringes on someone else’s rights.
A mashup is a work that blends multiple elements of another person’s content to create an interesting result. For example, your artwork could combine a cool wombat, a videogame character, and a couple of company logos.
But all of these elements might be someone else’s intellectual property, and you may be infringing their rights by using them in your mashup. Keep in mind that just because your mashup may combine many elements of others’ content, and your mashup isn’t a direct copy of any of them, this doesn’t mean your mashup is okay.
An attorney who specializes in intellectual property may be able to help you figure out whether your mashup is likely to be infringing.
Obligatory Yet Very Important Legal Disclaimer:
Don’t be fooled by any complicated jargon (and how snazzy we look in pinstripe). We are not your lawyer and this is not legal advice. We recommend contacting an attorney if you need an actual legal consultation.
Rather, this is general information aimed at giving you the legal lay of the land. While we can’t defend you in court, we know that art and IP ownership can be murky territory; the least we can do is arm you with the right kind of knowledge to get you started.