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
Harry Potter in translation respectively that are authorised by J. K. Rowling. In Iran, several unauthorised translations of the Harry Potter books exist side by side. According to one source, there may be as many as 16 Persian translations in existence concurrently. Iran is not a member of the Universal Copyright Convention, so publishers are not prosecuted for publishing foreign books without respecting copyright or paying royalties. A team consisting of seven Esperantist volunteers completed the translation of "Harry Potter and the Philosopher's Stone" into Esperanto (under the title "Hari Poter kaj la ŝtono de la saĝuloj") in 2004. Rowling's representatives did not respond