Not really. If I write a series of stories about Herlock Solmes and his friend Dr. Wohn Jatson and everything maps up one-to-one with the Sherlock stories, it's

Not really. If I write a series of stories about Herlock Solmes and his friend Dr. Wohn Jatson and everything maps up one-to-one with the Sherlock stories, it's pretty clear I copied them even if I changed the names. Or to give a real example, consider the famous silent movie "Nosferatu". While it was theoretically about a vampire named Count Orlock being visited at his castle by a lawyer named Thomas Hutter and how Orlock ends up moving to Hutter's city and attacking his family, it is pretty obviously the story of Count Dracula and Jonathan Harker, and the widow of Dracula's author sued the makers over it.