Legal disputes over the Harry Potter series October 2007, Warner Bros. and Rowling sued Michigan-based publishing firm RDR Books to block the publication of a 400-page book version of the Harry Potter Lexicon, an online reference guide to her work. Rowling, who previously had a good relationship with Lexicon owner Steve Vander Ark, reiterated on her website that she plans to write a "Harry Potter" encyclopedia, and that the publication of a similar book before her own would hurt the proceeds of the official encyclopedia, which she plans to give to charity. A judge later barred publication of the book in any form until the case was
Harry Potter Fan Zone of Warner Bros., it has covered the US and UK premieres of the last six "Harry Potter" films and has twice visited Leavesden Studios to report on "Harry Potter" filming. The website has also been selected for preservation in the Pandora Archive by the National Library of Australia. The site has had the opportunity to interview many of the cast and crew involved in the "Harry Potter" film franchise, including Daniel Radcliffe, Rupert Grint, Tom Felton, Evanna Lynch, Andy Linden, James Walters, Jamie Waylett and crew members David Yates, David Heyman and David Barron. Additionally, J. K. Rowling answered questions