David Ernst

3M (St. Paul)
Assistant General Counsel

David concentrates on antitrust law and trade regulation. David regularly advises clients on mergers, acquisitions, and joint ventures. He frequently counsels on cross-border transactions, and has coordinated worldwide merger notifications for transactions requiring clearance in multiple foreign jurisdictions. David has defended clients before the U.S. Department of Justice and the Federal Trade Commission in connection with investigations of mergers, acquisitions, and joint ventures. David advises clients in virtually all aspects of antitrust law, including monopolization, vertical restraints, concerted activity, licensing and other intellectual property issues (including patent pools), resale price maintenance, price discrimination and implementation of antitrust compliance programs. David has advised a number of companies regarding their involvement in business-to-business (B2B) internet-based trading platforms in a number of different industries including financial products, insurance and electrical products. David represented two major financial institutions in connection with a series of investigations by the Department of Justice into internet-based trading platforms, all of which were resolved without enforcement action. David has also represented clients in major antitrust litigations in the vitamin and shipping industries. David has represented clients in a variety of industries, including banking and financial services, information services, healthcare, biometrics, semiconductors, chemicals, oil and gas, advertising, pulp and paper, construction equipment and motor vehicles.


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