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 in how Americans have responded to the campaign. The books have been the subject of a number of legal proceedings, stemming from various conflicts over copyright and trademark infringements. The popularity and high market value of the series has led Rowling, her publishers, and film distributor Warner Bros. to take legal measures to protect their copyright, which have included banning the sale of "Harry Potter" imitations, targeting the owners of websites over the "Harry Potter" domain name, and suing author Nancy Stouffer to counter her accusations that Rowling had plagiarised her work. Various religious conservatives have claimed that the books