In this article the analysis of judicial practice in the application of the courts and the competition authorities, paragraph 1 part 4 article 11 of the Federal law from 26.07.2006 № 135 “On Protection of Competition”. The authors analyze the procedure of proving anticompetitive agreements on imposing the terms of the contract unfavorable to the counterparty or not related to the subject matter of the contract, within the most frequently affected by this offense areas of economic activity, summarize the circumstances that are mainly established by the courts in such cases. The article also draws conclusions on the existing problems of law enforcement of the rule in question, including attention to the lack of full uniformity of judicial practice on a number of issues.