On 29 September 2011, the ECJ found that the Commission had failed to provide sufficiently reasoned responses to Elf Acquitaine’s assertions that it should not be held liable for its subsidiary’s involvement in the monochloroacetic acid cartel. The ECJ also found that the Commission had failed to show that Elf Acquitaine and Arkema, the subsidiary, acted as part of the same undertaking and therefore annulled the Commission’s decision in relation to Elf Acquitaine’s liability. Read more.