Ex parte Lundgren

Ex parte Lundgren is a decision by the United States Patent and Trademark Office board of appeals, i.e. the Board of Patent Appeals and Interferences (BPAI), that asserts that process inventions do not have to be in the technological arts in order to be patentable in the United States. They do, however, have to produce a "concrete, useful and tangible result". Lundgren was then superseded by In re Bilski, which jettisoned the "concrete, useful and tangible result" test.