Whenever I picture an orc I see the classic Blizzard Orc. Green with small pointy ears overly large square jaw and big teeth. Blizzard has used the same iconic orc design since they were doing 2d adventure games. All the way up to world of warcraft and beyond. When I see the design or people who try and create orcs I stiIl think that is classic blizzard orc. In fact its so iconic its actually hard to create a unique looking orc that doesnt look like a blizzard orc and still have it look like an orc.
So my question is how much of this classic orc design is copyright. Its so iconic and hard to get away from the classic blizzard orc and still consider it a orc. heck even today a orc looks strange to me if it isnt green.
Maybe not so helpful, but please, please, PLEASE don't call it "classical Blizzard design"... as much as Blizzard is good at balancing games (I call it "streamlining the game into a ball", but then I dislike Blizzard games), they have never really, to my knowledge, been very innovative.
Point in case -> Warcraft is a pretty shameless ripoff of Warhammer. Pretty much everything in the universe is from this other fantasy universe, spiced up with some more tolkien, and some other fantasy universes.
Its not even that I believe that Games Workshop came up with this Orc Design on their own (AFAIK, Warhammer orcs predate Warcraft orcs by at least a decade), I am pretty sure the guys at games workshop raided the work of famous, but often not-so-famous fantasy and D'n'D artists just as much as they raided the D'n'D rulesets. After all, legend is most of the founding members where big fans of Pen and Paper (not to mention how shamelessly they ripped off the concept of multiverses, chaos gods and "different shades of grey" villain/hero characters from "Elric of Melnibone").
I can only guess that the Blizzard guys where quite into Warhammer Tabletop gaming when they had to come up with their own Fantasy world.
To get back from my unproductive semi-rant (Blizzard does not deserve half the rant I put up there, no matter what I think of their products, they do great in the market for a reason, no matter where the ideas come from):
I don't think you will ever get into legal hot water for "ripping off orc design"... it is unclear who came up with the "orcs are big, green, muscular, with boar tusks" design. I don't think tolkien did (which is why it is refreshing the movies based on his work where only SLIGHTLY influenced by the newer orc imagery), but I think it emerged during the fantasy and pen and paper underground phase in the 70's... the original designer most probably is so unknown, and his work so obscure that only the greatest Pen and Paper, or Fantasy / Hard Rock geeks would know him/it (there is a big chance the design actually started life as the album cover for a hard rock or metal band).
Don't care to much about it. Care to give YOUR interpretation something unique, breath some life into it. Blizzard did so by making the orcs noble in their own way. Game Workshop did so by making them funny, in a twisted, Joker-like way. While both orcs/orks (which, by the way, is what ze germanz call ze orcs) might look similar on the outside, the mental and moral image couldn't be more different.
Games Workshop orcs and orks are cruel, twisted, but funny (for the guy not getting wacked)... they amuse us BECAUSE they are a naive, twisted comedy of our human society. And because someone is always getting the short end of the stick and dying in a horrible way.
Blizzard Orcs seem to be more a more brutal, and savage versions of the noble indian. Misunderstood by humans, but noble in its own way (correct me if I am wrong, I am not so much into Blizzard lore as I am not so much into their games).
You can do a lot to differentiate YOUR orcs from similar looking orcs in other games. Maybe you want to play with your audiences expectations (orcs wearing nice clothing and talking about manners and rocket science?)... maybe you would like to stay true to their expectations, but alter it somehow (like Games Workshop did by making the ork civilization mirror huma civilization, just more savage, sometimes primitive and sometimes naive)?
You could use clothing, stature (maybe your orcs CAN walk upright?), equipment (how about making them farmers instead of warriors), mindsets (maybe they are being oppressed by the mean humans?), and many other things to make your orcs distinct.