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 translation to translate the Harry Potter books into German more rapidly. The German publisher of the Harry Potter books, Carlsen Verlag, filed a cease and desist against the fan translators; they complied, taking down the translations. In some countries, when there were no authorised translations into the local language, translations not sanctioned by J. K. Rowling were prepared and published. Such was the case, for example, in Sri Lanka, where the books have been unofficially translated into Sinhala and possibly into Tamil. However, there have been more recent translations into both Sinhala and Tamil published by Sarasavi Bookshop and Manjul Press