Today a judge ruled in favor of JK Rowling and WB in her case against RDR Books.  U.S. district court judge Robert Patterson said that Rowling proved the publication of Steve Vander Ark’s unofficial Potter companion book, based off his web site of the same name, would case irreparable harm to the author. He also said that RDR Books had “failed to establish an affirmative defense of fair use.”

So now The Harry Potter Lexicon book must halt publication. Here is the full decision (it is a pdf file).

Thanks HPANA!