The dispute was sparked when Steve Vander Ark, who runs a Harry Potter fansite, got a book deal. Vander Ark, along with others, created a site called "The Harry Potter Lexicon" that catalogued J.K. Rowling’s imaginary world. Even Rowling declared herself a fan of the site, but when RDR Books decided to issue a print copy, things got litigious. Rowling and Warner declared that publishing the lexicon would cripple their chances of printing a similar book and making another, smaller mountain of money.
Larry Lessig, a Bay Area champion for free culture who once considered running for congress, is co-counsel and summed up the fight this way: "The importance of the case goes beyond the world of Harry Potter and its fans. The decision could have a far-reaching impact on the literary landsacpe, and beyond, to disucssion of any fictional work in any medium." --Andy Wright