English to Spanish Law/Patents Law (general) Documento: es un poder que se otorga a otra persona

In effect the authorization to exercise the necessary steps or actions with power to submit written titles headings and documents of all kinds, challenge, decline, or extend Jurisdictions, attend oral proceedings to the comparison of documents or signatures or a forensic exams, appoint appraisers, primers, auctioneers, clerks and expert from all natures (...)

Se los denomina ¨iniciadores¨ a los primers? Qué son? Qué función tienen?