Katherine Mansfield, Anaïs Nin and Leo Tolstoy in that the authors revised their diaries after the initial draft, and the material was posthumously edited into a publishable manuscript by their respective executors, only to be superseded in later decades by unexpurgated editions prepared by scholars. German retiree Ernst Römer accused Otto Frank of editing and fabricating parts of Anne's diary in 1980. Otto filed a lawsuit against him, and the court ruled that the diary was authentic. Römer ordered a second investigation, involving Hamburg's Federal Criminal Police Office (Bundeskriminalamt (BKA)). That investigation concluded that parts of the diary were written with ballpoint pen ink, which was not generally available in the 1940s. (The first ball point pens were produced in the 1940s but they did not become generally available until the 1950s.) Reporters were unable to reach out to Otto Frank for questions as he died around the time of the discovery. However, the ballpoint pen theory has mostly been discredited. There are only three instances where a ballpoint pen was used in the diary: on two scraps of paper that were added into the diary at a later date (the contents of which have never been considered Anne Frank's writing and are usually attributed to being Otto Frank's notes) and in the page numbers (also probably added by Otto Frank while organizing the writings and papers). Copyright and ownership of the originals Anne Frank Fonds In his will, Otto Frank bequeathed the original manuscripts to the Netherlands Institute for War Documentation. The copyright however belonged to the Anne Frank Fonds, a Switzerland-based foundation based in Basel which was the sole inheritor of Frank after his death in 1980. The organization is dedicated to the publication of the diary. Expiration According to the copyright laws in the European Union, as a general rule, rights of authors end seventy years after their death. Hence, the copyright of the diary expired on 1 January 2016. In the Netherlands, for the original publication of 1947 (containing parts of both versions of Anne Frank's writing), as well as a version published in 1986 (containing both versions completely), copyright initially would have expired not 50 years after the death of Anne Frank (1996), but 50 years after publication, as a result of a provision specific for posthumously published works (1997 and 2036, respectively). When the copyright duration was extended to 70 years in 1995implementing the