David Rosner
Associate | Toronto
Toronto: 416-863-2216

David advises clients on all aspects of Canadian competition law and foreign investment law. He has represented clients in a broad range of industries, including consumer products, manufacturing, energy, telecommunications and technology, finance and banking, chemicals and plastics, defence, pharmaceutical and life sciences, construction, automotive, retail and others.

Before joining Blakes in 2011, David practised competition law in the Brussels office of a leading international law firm. He has extensive experience dealing with the U.S. antitrust agencies and the European Commission.



  • BCE Inc. on its proposed acquisition of Glentel Inc. for approximately C$594-million
  • GlaxoSmithKline plc on its Consumer Healthcare, Vaccines and Oncology transactions with Novartis AG
  • Thermo Fisher Scientific Inc. on its US$13.6-billion acquisition of Life Technologies Corporation
  • Pearson plc in connection with the contribution of Penguin to a global trade-book-publishing joint venture with Random House
  • Anheuser-Busch InBev SA/NV on its US$20.1-billion acquisition of the remaining stake in Grupo Modelo, S.A.B. de C.V.
  • Maple Group Acquisition Corporation, in connection with its C$3.7-billion acquisition of TMX Group Inc., Alpha Trading Systems and The Canadian Depository for Securities Limited


  • Penguin Canada in connection with an inquiry by the Competition Bureau in respect of eBooks
  • Embraco (a Whirlpool affiliate) on the EU, U.S. and other investigations regarding alleged anticompetitive practices in the refrigeration compressor industry
  • Various complainants to the European Commission regarding the licensing of patents to standardized wireless telephony technology
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Co-author: New Clouds on the Legality of Unilateral Conduct in Canada
CPI Antitrust Chronicle, March 2014.
Co-author: Canadian Perspectives on Competition Law and Reverse Payments Following FTC v. Actavis
CPI Antitrust Chronicle, September 2013 (2).
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