Quiotu said:
Huh... didn't even think of maps being copyrighted, but apparently it's a big business. Some manufacturers even have copyright traps in their maps, adding towns or points of interest on their maps that don't actually exist to make it easier to tell if the map is theirs or not.
But here's the trick in this case. Sounds like this guy didn't publish or distribute the map they used, he just did it for S&Gs to show what was wrong. Naughty Dog basically found a way to use a non-copyright map, which is pretty rare, and now this guy doesn't have a leg to stand on in the conversation. Posting an edited map on your blog doesn't make it copyrighted.
Actually, it does. Copyright is granted to whoever created something in the US. You might be able to claim that the creation was derivitive or something, but, barring that, he has a copyright on the image. You do not have to distribute or even regsiter a work to have it protected by copyright. Not registering it will decrease the types of damage you could sue for.
This guy has a very legitimate reason to be mad. Anyone working with intellectual property, like Naughty Dog, definitely understand that you can't just download random images from the internet, slightly tweak them, and use them in their game.
Unless Mass has weird rules, they probably could have just used the official map. Generally, IP created by the government is automatically in the public domain. Some states have different rules about this though.