<<Agreed, but if you were to write an RPG module set in
the GWoH, it would be pretty clear that you took the
entire concept from Wizards, violating their PI.
>>
No, why? Unless I set it in _their_ GWoH, then I could write entire books on my version of the place and use that name all day if it's not trademarked.
The weirdness comes in (and this is less than clear to me) is what happens when you license 99.9% of the work except for a phrase like this. Now, the phrase is not itself copyrightable. It is copyrightable in tandem with a description, but if the description is licensed to me, it is unclear how much copyright protection remains with the phrase.
The PI requirement of ownership requires that PI (which excludes OGC) have an owner (as defined by some mysterious standard).
Lee
