So what would a non-S&S Superman origin eliminate?
This means the Siegels now control depictions of Supermans origins from the planet Krypton, his parents Jor-L and Lora, Superman as the infant Kal-L, the launching of the infant Superman into space by his parents as Krypton explodes and his landing on Earth in a fiery crash.
After a court order reverted rights to the Siegels in 2008, they owned the basis of the Superman character, including his costume, his alter-ego as reporter Clark Kent, the feisty reporter Lois Lane, their jobs at the Daily Planet newspaper working for a gruff editor, and the love triangle among Clark/Superman and Lois.
But that didnt give them the full Superman copyright because DC owns other important elements like Supermans ability to fly, the term kryptonite, the Lex Luthor, Jimmy Olsen and Perry White characters, Supermans vision powers and expanded origins