Originally posted by Fozzie Bear
You won't necessarily get in trouble for copying someone else's work unless you try to sell it as your OWN. That's why people have copyrights is to keep others form copying it and putting their name on it.
There's also a legality that many can escape by using which is something to the effect of 'fair likeness,' in which case Mickey Mouse looked exactly like Walt's Oswald the Lucky Rabbit, except by the ears being shorter and rounder.
While it's true the FBI probably won't come knocking down your door you should be aware of the absolute legal facts Mike:
1. Reproducing anyone else's original work (unless it is in the public domain or you obtain permission) is illegal. There are no exceptions or loopholes around it. You can be sued - and in some cases prosecuted - that's the law. Now, if you are just making puppets for fun to put in your room it's true you probably won't have a problem, but if you display them on a webpage, show them on TV or perform live with them you could be asking for trouble.
2. "Fair likeness" is a very fine line to walk and only applies if you are not intending to infringe on a copyright or trademark. For example, if I create a character that sort of resembles parts of Big Bird and I live in a country where they've never seen Big Bird I could argue that there's no intent to infringe on Sesame's intellectual property rights and I ~might~ win. BUT, if I just change a few things on Big Bird so he doesn't look
exactly the same I can still get in trouble because my intent is to infringe on Sesame's intellectual property rights and I'm just trying to find a way around copyright laws (what Walt did in the 20s he might not get away with today).
This is a very gray area and when cases like this go to court it can often go either way and - usually - the side with more money tends to win.
3) There is something called "Fair Use" which stipulates how copyrighted material can be incorporated in to an original work. Examples of fair use would be if you read a quote from a book in a book review. Another is Andy Warhol's famous Campbell Soup painting. He can get away with that because he incoporated a commercial trademark in to an original piece of art to make an artistic statement. The same rule might apply if say you cut out pictures of Muppets from magazines to make a collage.
My wife did a painting of Barbie Doll on the beach last year. Mattel can't sue her for that (though they could try) because it constitutues fair use, but if she made prints and sold them she would be in trouble because she's no longer making original art, she's performing a commercial activity. Mattel tried to sue Aqua over the song "Barbie Girl" but eventually lost because the judge ruled that the song and video was satire, also permitted under fair use.
Now all that said I'm not a lawyer, so you if you really want more information about copyrights, trademarks & such check out
this website about copyright law. You can also read
The Berne Convention which is the basis of all international copyright law.