Русско-англо-русский юридический словарь

This excerpt … indicates that the Panel did not rely exclusively on the presumption of good faith, as Brazil suggests, given that some of the Panel’s questions were directed at the validity of Exhibit EC-12. (wto.org)

The presumption of good faith or bona fides is essentially a civil law concept with a long history going back to Roman law that is specifically made applicable in contract law. The term is applied to all kinds of transactions. Thus, Art. 527 of the Civil Code states: Good faith is always presumed, and upon him who alleges bad faith on the part of a possessor rests the burden of proof. (http://manilastandardtoday.com)