The Harry Potter Lexicon "the will or the heart" to now publish her own encyclopedia. On 8 September 2008, Rowling won her copyright case against RDR Books. Lexicon publisher RDR Books said: Judge Patterson said that reference materials were generally useful to the public but that in this case, Vander Ark went too far. He said that "while the Lexicon, in its current state, is not a fair use of the Harry Potter works, reference works that share the Lexicon's purpose of aiding readers of literature generally should be encouraged rather than stifled." He said he ruled in Ms. Rowling's favor because the "Lexicon
Legal disputes over the Harry Potter series Legal disputes over the Harry Potter series Since first coming to wide notice in the late 1990s, the "Harry Potter" book series by J. K. Rowling has engendered a number of legal disputes. Rowling, her various publishers and Time Warner, the owner of the rights to the "Harry Potter" films, have taken numerous legal actions to protect their copyrights, and also have fielded accusations of copyright theft themselves. The worldwide popularity of the "Harry Potter" series has led to the appearance of a number of locally produced, unauthorised sequels and other derivative works, sparking efforts to ban or contain them.