Was thinking of this after a conversation I had on a thread about dreams. Someone joked “I was dreaming of the events of The Matrix, then I was woken up by someone worried my dream was infringing the Wachowski’s copyrights”, and it turned into a whole train of thought in my mind, like violating IP law because you stole fire from Zeus which was his intellectual property.
Lineages could claim copyright of children and their works as derivative. Entire families could claim copyright of their descendants and all works related. Each new generation resets the timer on expiration if the copyright expirations still apply.