Lex Facit Arbitrum

Mandatory Private Treaty Application? On the Alleged Duty of Arbitrators to Apply International Conventions

“…Any other solution would involve the conclusion that it is open to the arbitrator to disregard the law. 64 Under this approach, the lex arbitri would require arbitral tribunals to also apply international conventions to which the seat state of the arbitration has acceded. The reason is that conventions' provisions defining a particular convention's applicability -Article 1(1) of the CISG being a prominent example -are unilateral conflict-of-laws rules 65 and would accordingly be subject to the requirement described above.…”

Hacia una jurisprudencia arbitral en el arbitraje internacional de inversiones

“…15 La asimilación del arbitraje internacional a un órgano sujeto al ordenamiento jurídico en el que éste se lleva a cabo fue defendida por F. A. Mann en un artículo publicado en 1967 llamado Lex Facit Arbitum. 16 Este autor declaró la fuerte similitud entre el juez nacional y el árbitro ya que ambos están sujetos a los soberanos locales. 17 Para esta teoría, la ley de la sede (lex arbitri) sería la única fuente legal del arbitraje, regulando el procedimiento arbitral y el derecho aplicable al fondo (incluida la validez de la elección).…”

Independence, Impartiality, and Immunity of Arbitrators—us and English Perspectives

“…114 Dr FA Mann believed that this was the inevitable result of the general proposition that 'every right or power a private person enjoys is inexorably conferred by or derived from a system of municipal law'. 115 Because of the special status granted by the State, arbitrators are regarded as resembling judges of national courts. The only difference between them, as illustrated by Niboyet, is that a judge 'derives his nomination and authority directly from the sovereign,' whilst an arbitrator 'derives his authority from the sovereign but his nomination is a matter for the parties'.…”