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 Prince" received the Book of the Year prize at the British Book Awards. The title of the seventh and final "Harry Potter" book was announced on 21 December 2006 as "Harry Potter and the Deathly Hallows". In February 2007 it was reported that Rowling wrote on a bust in her hotel room at the Balmoral Hotel in Edinburgh that she had finished the seventh book in that room on 11 January 2007. "Harry Potter and the Deathly Hallows" was released on 21 July 2007 (0:01 BST) and broke its predecessor's record as the fastest-selling book of all time. It sold