privativo: Que é para uso exclusivo de uma pessoa ou pequeno grupo (entrada privativa) https://www.aulete.com.br/privativo

“Exclusive rights can be established by law or by contractual obligation, but the scope of enforceability will depend upon the extent to which others are bound by the instrument establishing the exclusive right; thus in the case of contractual rights, only persons that are parties to a contract will be affected by the exclusivity.” https://en.wikipedia.org/wiki/Exclusive_right