Over the last few years, we’ve [Techdirt] been covering the declaratory judgment lawsuit trying to establish that Sherlock Holmes is in the public domain. As explained, nearly all of the stories about Holmes were published prior to 1923, making them public domain in the US. However, there was one book with ten stories published after 1923, and those works are still covered by copyright, thanks to our nutty system of copyright extensions. Some Sherlock Holmes scholars/authors, Leslie Klinger and Laurie King, filed for declaratory judgment after the Sir Arthur Conan Doyle Estate threatened the publisher of their upcoming book (after successfully pressuring a previous publisher) that Sherlock Holmes is still covered by copyright and a license must be obtained. Klinger argued that he wasn’t using anything from those works that were published post-1923.