The European Union opened a review into the Google-Yahoo search advertising partnership in July, according to Los Angeles Times article. The planned partnership is only in the United States and Canada, but Jonathan Todd, a spokesman for the European Union’s competition commission, told the Times that “since the two companies do business in Europe, the cooperation could violate European Commission rules on anti-competitive practices, such as price-fixing and sharing of sensitive business information.” Todd also said that the review “would focus on the possible effects of the deal on European Commission rules relating to restrictive business practices.” Last week the U.S. Justice Department hired lawyer Sanford Litvack in preparation for a possible challenge to the partnership.