This is an excellent piece from slate that sums up in one sentence why J.K. will lose this lawsuit.

"She has confused the adaptations of a work, which she does own, with discussion of her work, which she doesn't."

That says it all. Allowing copyright and trademark concerns to silence discussion of a literary work (or any element of our culture) would be a disaster for free speech.

As Ron once said, "She needs to sort out her priorities."