Leslie Klinger is an expert in Sherlockian literature and an attorney who fought to keep Sherlock Holmes in the public domain despite attempts by the Conan Doyle estate to argue otherwise. The Conan Doyle estate attempted to argue, during litigation relating to Netflix's Enola Holmes and Miramax's Mr Holmes, that copyright law protects certain personality traits of Holmes that were only alluded to in later stories (whose copyright has not expired). But Klinger was successful in persuading the court that copyright law does not protect personality traits of fictional characters.