ABSTRACT
The State, to fulfill its functions adequately, can divulge and use the information of the agents (North, 1990______. Institutions, institutional change and economic performance. Cambridge: Cambridge University Press, 1990.), as well as speeding up the institutional process of changes and adequacies, searching to adapt norms and laws to the mutant reality of the society. Thus, in a market economy as the Brazilian, the government needs to count on two important instruments - that they interact and if they complement - to search the adequate functioning of the markets: the antitrust legislation and the politics of economic regulation. This article has the objective to portray in general lines the politics and the system of free market defense in Brazil, as well as analyzing the impacts of the decisions of the Board of directors of CADE, for the institutional forty of the system of free market defense in Brazil, from the opening of the Brazilian economy in the Nineties of the century passed, with prominence for the decisions on the analyzed acts of concentration after-1994. We conclude that the system of free market defense - where it still weighs to be in construction, and to need a bigger rapidity in the appreciation of determined acts and to perfect the mechanism of coordination of the agencies of the system -, it is if consolidating institutional in Brazil.
KEYWORDS
Free market defense; Competition market; Concentration act; Brazil