The Court of Justice of the European Union (CJEU) upheld the General Court’s decision that AstraZeneca abused its dominant position by excluding from the market competing manufacturers of generic products. The CJEU concluded that AstraZeneca’s attempt to mislead the patent offices amounted to an abuse of a dominant position and that the deregistration of the marketing authorizations (MAs) for its anti-ulcer medicine with the principal intention of preventing generic market entry was inconsistent with European competition law.