The first quarter of 2019 proved to be as active as ever for antitrust regulators in both the United States and Europe. In the United States, vertical merger enforcement was the focus of a few high-profile matters. The US DOJ has been working on an update to the Non-Horizontal Merger Guidelines, possibly providing clarification for merging parties.

Meanwhile in Europe, although the European Commission cleared a number of merger control proceedings with remedies, the European Commission also blocked two transactions during the first quarter of 2019.