On Oct. 6, 2011, the Canadian Competition Bureau issued the final version of its Merger Enforcement Guidelines. The guidelines describe generally how the Bureau analyzes merger transactions, and more closely track the Horrizontal Merger Guidelines issued by the U.S. Department of Justice and Federal Trade Commission in 2010. Like the U.S. guidelines, the Canadian guidelines de-emphasize the role of market definition in merger analysis, focusing more on potential competitive effects. The new guidelines address both horizontal and non-horizontal (vertical and conglomerate) mergers, define what constitutes a "significant interest" under the Canadian Competition Act, and address how the Bureau will consider interlocking directorates and minority interests in merger reviews.