Certain legal rights and licenses have come to possess many of the qualities and aspects of intellectual property and property itself, although they are not statutorily or by definition regarded as intellectual property rights, for example aircraft supplemental type certificates and airline slots; new drug applications; box-rights; naming rights; drug marketing authorisations, etc. and in some jurisdictions know-how, trade secrets and show how. Such rights are often referred to as quasi-intellectual property, or as intellectual quasi-property, or in France as proto-droits.