This article investigates whether the inventions and works created by artificial intelligence should be patentable and copyrightable and, if so, who should be assigned these rights. This article uses US case law and incentive economics to answer these questions. This article discusses who of the machine, its creators, owners, or operators should be assigned the rights to exclude others if policy-makers want to promote the progress of science and useful arts. All four candidates raise legal problems. Based on current law, the users may be able to patent their inventions but other works would fall into the public domain. [---]