Glossary of competition terms

This Glossary is based on definitions from DG COMP’s Glossary of terms used in EU competition policy (© European Union, 2002) and the OECD’s Glossary of industrial organisation economics and competition law (© OECD, 1993). Each term is enriched with references of EU and national case laws from the e-Competitions Bulletin and Concurrences Review.

Prohibition (mergers)

According to Article 1 of Regulation No 139/2004 of 20 January 2004 on the control of concentrations between undertakings: "A concentration which would significantly impede effective competition, in the common market or in a substantial part of it, in particular as a result of the creation or strengthening of a dominant position, shall be declared incompatible with the common market." © Council of the European Union