Well, thanks for your concern, Anonymous!

For some reason I find mostly UK resources on "Design copyright" I use this as a basis for now.

It might violate copyright if "the shape, texture, colour, materials used, contours and ornamentation" would be similar. Since this is a lowpoly 3D model, only "shape" seems to be relevant for now.

I compare this model with a model of a Warhammer 40k space marine and a StarCraft marine. I come to the conclusion that Julius' model resembles WH40k's marine look no less than and SC's marine look does.

I assume that there was no settlement between the two and also assume that it would be very likely to find many examples of similar designs in games of different ownerships on the level as this model and SC marines have with WH40k that did not lead to legal complications, to safely assume that this model does not violate the rights of Games Workshop.

Does this sound good to you?

One could ask GW what they think of this. (I will not :) )

I wouldn't worry too much about that.
Space marines have been done thousands of times in videogames, the Games workshop would have to sue half of all scifi game developers.
Epic, ID, Blizzard, Splash Damage, People Can Fly, 3D realms, Irrational, Dynamix, etc all have done highly similair designs.

I was actually researching the history of "Space Marines" and the term was coined in the late 1930's byRobert A. Heinlein. 

http://en.wikipedia.org/wiki/Space_marine

@Julius: Good work.

When can we expect to see this skinned and rigged? :D

I'll skin it if someone will texture it.