Lapse DateThe date when a patent is no longer enforceable in a jurisdiction due to a failure to pay renewal (maintenance) fees.
Level of Ordinary SkillThe level of skill in the art(s) to which an invention pertains that is used in judging whether a disclosure or claim is enabling. MPEP 2141.03.
Licensea contract in which the owner of the patent grants another person or company permission to make, use, or sell the patented invention.
licenseeThe entity which is granted rights to intellectual property by the owner of that property.
licensorThe owner of intellectual property which grants rights to another (the licensee) through a license.