IANAL but I don't take the fact that habeas was founded by a lawyer to indicate that their idea of copyright law is necessarily enforceable. Lawyers are notoriously bad judges of their own cases. The guy running EMarkettingAmerica thinks he can file a case on behalf of unspecified plaintifs... The copyright and trademark claims arround the Haiku are a stretch because Habeas are trying to use one IP regime to achieve the object of another - patent law. There is case law in the video games area that indicates you can't use a copyright or trademark claim to make an access control system closed. But there is a pretty good argument that unauthorized use of the statement 'approved by Habeas' or similar is a mark. That is like a restaurant claiming to have three Egon Ronay stars when it does not have any, it is a pretty clear trademark case. The Haiku thing might work and is pretty costless, but overall I doubt that it is necessary.