Publisher to appeal HP encyclopedia decision

<p>US publisher RDR Books, which lost its bid to print the Harry Potter encyclopedia by Steven Vander Ark, will appeal a federal judge&#39;s decision that the book constituted copyright infringement on author JK Rowling, court records show.</p><p>According to the <em>Muskegon Chronicle</em>, lawyers for RDR&#39;s Roger Rapoport last week filed a notice of appeal seeking to overturn a judge&#39;s ruling.</p><p>US District Judge Robert P Patterson ruled in September that the publication of the Rapoport and Vander Ark encyclopedia would cause Potter irreparable harm. </p><p>Patterson noted reference materials generally are useful to the public but that in this case, Vander Ark went too far.<br /></p>