Most legal scholars assume that there are only two “families” of legal systems in the world: common law and civil law. Briefly, common law is applied in all countries that speak the English language and has its origination from the “habits of society.” On the other hand, civil law is applied just about everywhere else, with a few exceptions, such as in tribal law areas, jurisdictions that follow Islamic law, and a few other smaller legal systems. Brazil's New Code of Civil Procedure was promulgated in 2015 and brought innovations to Brazilian law. Elements of common law were incorporated into the Brazilian legal system, particularly that of using precedent. The application of common law elements in Brazilian law is being studied by various legal specialists. This present study explains how common law can be applied in civil law jurisdictions, similar to the way it is being adapted and applied in Brazil.