Warner Bros. Entertainment Inc. v. RDR Books the market for reference works. According to Judge Patterson, even a copyright holder as eager as Rowling is to control through licensing all related markets must face limits. Warner Bros. Entertainment Inc. v. RDR Books Warner Bros. Entertainment, Inc. and J. K. Rowling v. RDR Books, 575 F.Supp.2d 513 (SDNY 2008) is a copyright lawsuit brought on 31 October 2007 by the media company Warner Bros. and "Harry Potter" author J. K. Rowling against RDR Books, an independent publishing company based in Muskegon, Michigan. Lawyers for Rowling and Time Warner argued that RDR's attempt to publish for profit a print
Harry Potter her publishers to adopt a more gender-neutral pen name in order to appeal to the male members of this age group, fearing that they would not be interested in reading a novel they knew to be written by a woman. She elected to use J. K. Rowling (Joanne Kathleen Rowling), using her grandmother's name as her second name because she has no middle name. "Harry Potter and the Philosopher's Stone" was published by Bloomsbury, the publisher of all "Harry Potter" books in the United Kingdom, on 26 June 1997. It was released in the United States on 1 September 1998