The makers of Clean Slate, a drive-wiping program, sued Warner over a fictional product with the same name in The Dark Knight Rises; the judge quite sensibly told them that trademark protects you from unfair competition -- it doesn't let you own words. Read the rest

http://feeds.boingboing.net/~r/boingboing/iBag/~3/H2pA86R59y8/fictional-products-dont-viol.html