Glossary entry (derived from question below)
Portuguese term or phrase:
protestar juntar substabelecimento emitido
English translation:
covenant > give an an assurance to append hereafter the proxy granted
Portuguese term
United Kingdom
Marketing and survey translation
Native in: English (Variant: British)
Works in: Spanish to English, Portuguese to English
...que protesta juntar substabelecimento emitido...
The phrase is preceded by the name of a legal representative and followed by another:
"Dr. X que protesta juntar substabelecimento emitido pela Ilustre Mandatária Dr. Y"
From what I understand this is someone being named as a proxy for another legal representative but I am unsure how to phrase this in legal British English.
Apr 30, 2022 09:51: Adrian MM. Created KOG entry
Apr 30, 2022 09:51: Adrian MM. changed "Edited KOG entry" from "<a href="/profile/2688125">Adrian MM.'s</a> old entry - "protestar juntar substabelecimento emitido"" to ""covenant to append hereafter the proxy granted""
Apr 30, 2022 09:52: Adrian MM. changed "Edited KOG entry" from "<a href="/profile/2688125">Adrian MM.'s</a> old entry - "protestar juntar substabelecimento emitido"" to ""covenants an assurance to append hereafter the proxy granted""
Proposed translations
Austria
Retd.T&I, Barrister & Austro-Advokat
Native in: English (Variants: British, Scottish) 
Works in: Spanish to English, English to Spanish, French to English, and 5 more.
.. who gives an assurance to append (file hereafter) the proxy issued ...
> proxy generally incongruous as meaning an agent voting at a meeting or the voting form and short for 'delegation of instructions to act'
intends (?) > (does give an undertaking or *covenant*) to supply hereafter (doesn't Google well, but is commonly used in UK legal rather than (semi-literate) accounting practice > AmE : add to the court's record....
protestar : declare; affirm, Collins
Ilustre Mandatária/ Illustrious Attorney Dr. Y : 'Learnèd' Counsel Dr. Y
hereafter: after this time > many g/hits refs are wrong in mixing up hereafter with hereinafter meaning later in the document or statute eg . 'other safety and environment related items listed in paragraph 5. of the annex hereafter.'
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Note added at 1 hr (2022-04-28 21:34:00 GMT)
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*Covenant* of Further (AmE) Assurances (BrE) covenant for further assurance.
Otherwise, note the two meanings of proxy as a person or the form: Proxy > 'the authority to represent someone else, especially in voting.' "Britons overseas may register to vote by proxy".
substabelecimento English translation: delegation of powers granted by....
*Covenant* of Further (AmE) Assurances (BrE). The parties agree to take any further actions and to execute any further documents which may from time to time be necessary
| agree |
Antônio Souza
18 hrs
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Muito obrigado, Antônio !
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| agree |
Mario Freitas
:
1 day 6 hrs
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Muito obrigado, Mario !
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United States
BA in Transl., MA in ESL, 15 yrs of exp.
Native in: Portuguese 
Works in: English to Portuguese, Portuguese to English, Spanish to Portuguese, and 2 more.
who (solemnly) commits him/herself to attaching/submitting a delegation of authority to a subagent
protestar: 5. Afirmar (a alguém) a intenção de; PROMETER [tdi. + a : O candidato protestou aos eleitores defender a educação pública.] (EN: promise; declare one's intention) (Aulete)
6. Comprometer-se solenemente a; assegurar ou afirmar categoricamente. [tdi. + a : Protesto a vocês que jamais ultrajarei o nome de minha família.: protestar respeito às leis.] (EN: affirm something categorically; solemnly commit to something)
As far as "substabelecimento", there are also different ways of translating it. According to Marcílio Moreira de Castro:
substabelecimento: substabelecimento. 1 – subagency; delegation
of authority (to a subagent); appointment of a subagent.
2 – (em um mandato judicial) delegation of authority (to a substitute lawyer); appointment of substitute counsel. -- In Dicionário de Direito, Economia e Contabilidade
The choice here will depend on your particular context.
Translations by lawyers for lawyers
Native in: English
Works in: Portuguese to English, English
..., who undertakes to file a subdelegation (of the power of attorney) granted
Blacks Law Dictionary, 11th Edition, page 1837
A Dictionary of Legal Usage, 2nd Edition, page 898.
A substabelicimento is a subdelegation by an attorney-in-fact, or in-law, of a power granted by a principal by power of attorney.
See Vocabulário Jurídico, De Plácido e Silva, 28ª Edição, página 1322, and Dicionário Jurídico, Ana Prata, Tomo I, 4ª Edição, página 1143.
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