 § 31 IV UrhG was abolished and replaced by the new § 31a UrhG by the end of December 2007.Since then the parties are able to enter into a so-called buy-out contract, meaning that the author will grant all rights of use of the known and yet unknown type of use to the other party.According to its personal scope of application, § 31a UrhG affects solely contracts between the author or their legal successor and the right holder.