Warner Bros. Entertainment Inc. v. RDR Books York trial attorney, David Hammer. Ms. Hasse then asked a group of intellectual property lawyers at Stanford Law School to help defend RDR Books' right to publish. Fair Use Project Executive Director Anthony Falzone said the Lexicon is protected by U.S. law which has long given people "the right to create reference guides that discuss literary works, comment on them and make them more accessible." On 16 January 2008, Rowling and Warner Bros. filed their full 1,100 page complaint against RDR Books, claiming that the book compiles and repackages Ms. Rowling's fictional facts derived wholesale from the Harry Potter works
Legal disputes over the Harry Potter series 2007, some "Harry Potter" fans on the Internet initially speculated that the site might be part of an elaborate viral marketing campaign for an official continuation or spinoff of "Harry Potter", one either written or at least approved by Rowling herself. On 9 November 2007, Rowling's agent Neil Blair denied that Rowling was in any way involved with the purported project, and Warner Bros., the studio which owns the rights to the "Harry Potter" film series, denied that the novel was in any way connected to the official "Harry Potter" franchise. Rowling and her publishers have brought a series of