Well known author JK Rowling has been sued by the family members of writer Adrian Jacobs for using an idea from Willy The Wizard No.1 Livid Land in her book Harry Potter and the Goblet Of Fire.
Contactmusic.com reports that the late English writer Jacobs' estate has issued proceedings in the high court, claiming copyright infringement.
"Adrian Jacobs did not live long enough to see the massive success of the Harry Potter books and films. If he had he would have sought the proper recognition of his contribution to this success story," said Paul Allen, an estate trustee.
"He cannot fight this battle personally, so his estate is bringing this action to ensure that his voice is heard. The action, if proved, will ensure the rights of authors everywhere, even posthumously," he added.