1. Revocable written (formal) or implied … 1. Revocable written (formal) or implied agreement by an authority or proprietor (the licensor) not to assert his or her right (for a specific period and under specified conditions) to prevent another party (the licensor) from engaging in certain activity that is normally forbidden (such as selling liquor or making copies of a copyrighted work). Intellectual property licenses generally mean that the licensor will not invoke ownership protection laws if the licensed property (art, design, patent, etc.) is copied, sold, or used by the licensee. A license is not a right, because the licensor may not have the legal power to give all necessary permissions that constitute a legal right.permissions that constitute a legal right.
, 2. A special permission to do something on, or with, somebody else’s property which, were it not for the license, could be legally prevented or give rise to legal action in tort or trespass.