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
J. K. Rowling release of "Goblet of Fire" and the fifth "Harry Potter" novel, "Harry Potter and the Order of the Phoenix". This gap led to press speculation that Rowling had developed writer's block, speculations she denied. Rowling later said that writing the book was a chore, that it could have been shorter, and that she ran out of time and energy as she tried to finish it. The sixth book, "Harry Potter and the Half-Blood Prince", was released on 16 July 2005. It too broke all sales records, selling nine million copies in its first 24 hours of release. In 2006, "Half-Blood