An out of print work protected by copyright, for which the current copyright holder is unknown or cannot be located or contacted. The question of who owns the rights to orphan works has been a major b [..]

Orphan works are works which are under copyright, but whose owner or the estate either cannot be found or cannot be identified. Sometimes the name of the creator or copyright owner may be known but ot [..]

Works for which the owner cannot be identified or located through a reasonably diligent search.

Works which are under copyright, but whose owner (or the estate) either cannot be found or cannot be identified.

Term used to refer to a work protected by copyright, …