It is known as a "derived work", not a split copyright. The copyright owner of the original owns that copyright, including of the elements incorporated into th

It is known as a "derived work", not a split copyright. The copyright owner of the original owns that copyright, including of the elements incorporated into the derived work. The copyright to the creative elements of the derived work are controlled by the copyright holder of the derived work, which may have a longer period of validity than the original work copyright. To distribute the derived work while the original copyright is in force requires permission (license) of the original copyright holder, or a determination that the derivation is a fair use, which the Warhol Foundation is seeking.