Industrial organization theory has explored several issues related to licensing, but empirical analyses are extremely rare. We amass a new and detailed dataset on licensing contracts, and use it to present some simple ‘facts’ concerning licensing behavior. Our analysis reveals robust cross-industries differences in several contractual features, such as exclusivity, cross-licensing, ex-ante versus ex-post technology transfers, and licensing to related versus unrelated parties. We offer an interpretation of these facts based on cross-industry variation in the strength of intellectual property rights.