You are totally right: A work is copyrighted but a name is trademarked
(there also recorded but I don't know anymore the difference :)). 
But when you make a trademark for a name, if I remember well, you 
much choose some category for your trademark. You can choose all
catergories, in this case nobody can use this name, this is 
certainly the case of big company like coca-cola; or you
choose one or more categories (this is cheaper I think!) but 
in this case if one use your name in another category you cannot 
say something!

Fabian.

Jerry wrote:
> 
> In article <388615F8.AF33F247@tiac.net>, Phil Clute <pcl### [at] tiacnet>
> wrote:
> >> "POV-Ray", "Persistence of Vision", "POV-Team" and "POV-Help" are
> >> trademarks of the POV-Team.
> >
> >Is it an actual "trademark" or just a copyright? I see the copyright on
> >the "About" screen from the Help menu but no T. As far as I know they
> >are not really the same thing.
> 
> No, and names/terms can't be copyrighted. For the above terms to be
> protected, they would have to be claimed as trademarks.
> 
> "POV-Ray" would be a trademark in just about all circumstances, as it is
> mostly nonsense; any use of the term "POV-Ray" is likely to bring about
> confusion.
> 
> "Persistence of Vision" is likely to be a trademark only within the
> raytracing realm; the term is a common one in at least one other field,
> and also plays on the title of at least one art piece. It is very likely
> that a painting titled "Persistence of Vision" would not be considered a
> violation of POV's trademark.
> 
> IANAL
> 
> Jerry

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