Black's Law Dictionary (2nd edition)dictionaries

Right Patent

An obsolete writ, which was brought for lands and tenements, and not for an advowson, or common, and lay only for an estate in fee-simple, and not for him who had a lesser estate; as tenant in tail, tenant in frank marriage, or tenant for life. Fitzh. Nat. Brev. 1

Source: Black’s Law Dictionary 2nd Ed (1910)