If no one else has trademarked the name, you could use it. It would strengthen yor hand if you would try to trademark the name for yourself then, too. If you name your font after a name someone else had alrady trademarked, they could sue you for the earnings you make using their registered trademark. How's that?
I'm wondering about using a name for a font that's already taken.
Twice! Once by Image Club, and then by Solotype. Just the fact that
there are in fact two of them already is encouraging (I mean legally)
and I know that even H&FJ have used names that were already out
there, but I'm wondering: what are the probable legal ramifications?
Practically speaking, is it only Berthold that one must avoid tangling
with like the plague?
And I'd like to bundle another question in here: What are your thoughts
concerning serif/sans font systems where each has a different name?
hhp