For more than five years, the FAS Russia has been operating the institute of Internal appeal, which makes it possible to review certain types of decisions of territorial antimonopoly bodies out of court. At the same time, the Legal Department of the FAS Russia with the participation of the Association of Antimonopoly Experts formed the practice of preparing and publishing in the journal "Russian Competition Law and Economics" quarterly reviews of the most important decisions of the collegial bodies of the FAS Russia.During this time, valuable experience has been accumulated in the consideration of complaints against decisions of territorial antimonopoly bodies and uniform approaches to solving a number of key issues of antimonopoly law enforcement have been formed.The article discusses the important problems of Internal appeal of the FAS Russia related to the specification of grounds and the procedure for applying to the collegial bodies of the FAS Russia on complaints against decisions of territorial antimonopoly bodies.An assessment of the most important advantages and disadvantages of this institution is given, recommendations are formulated for optimizing the practice of protecting the rights and legitimate interests of economic entities when appealing decisions (orders) of territorial antimonopoly bodies.