On 28 March 2011 19:24, Craig Forbes <cpforbes@xxxxxxxxxxxx> wrote: > That case is a messy mix of trademark > and copyright issues. Trademark law is much different from copyright > and it requires much more vigilant litigation of infringement. That's the exact reason I brought it up - I was just trying to say you'll almost certainly be clear in terms of copyright, but be careful that infringe in some other way. By saying "inspired by x" you're potentially opening yourself up to a patent or trademark lawsuit that might have otherwise gone undetected because your rules have been so modified for the Icehouse system that no one links the two. If the Scrabulous guys had just called it "Mixed Words" or something, and put out a very slightly different board to the official scrabble board, they would have been in the clear and Hasbro would probably never have noticed them. By giving a nod to the original Scrabble in the name "Scrabulous", they gave Hasbro ammo for a trademark case. regards, Vijay