This paper was prepared by Aura García Pabón from the OECD Competition Division with the assistance of Eduardo Mangada. The paper benefited from comments by Ori Schwartz, Antonio Capobianco, Despina Pachnou and Paulo Burnier from the OECD Competition Division. It was prepared as a background paper for the discussion on “Co-operative Antitrust in Remedy Design” taking place at the 142nd meeting of Working Party 3 on Co-operation and Enforcement.