Image of Thomas A McGrath

Thomas A McGrath

Competition/Antitrust Partner, New York


Member of the New York and Connecticut Bars


Tom leads our U.S. antitrust practice and is co-head of our Global Healthcare Group.  His practice focuses on gaining antitrust approval for clients’ multinational mergers, and he has acted for clients on some of their most complex and high-profile transactions.  He regularly appears on behalf of clients before the DOJ and Federal Trade Commission (FTC).  He also defends clients in criminal price-fixing investigations and private antitrust litigation. His practice includes advising clients on the antitrust aspects of a broad range of matters, including intellectual property licensing, cooperation with competitors, distribution arrangements and U.S. and global competition law compliance issues.

Tom’s relevant experience includes advising: 

  •  Linde AG on its US$90bn merger of equals with Praxair Inc.
  • Novartis on its transformative transactions to acquire GlaxoSmithKline’s global oncology business and sell its global vaccines business, its acquisition of Spinifex Pharmaceuticals and its sale of assets to Questcor (Mallinckrodt)
  • Siemens on its wind power transaction with Gamesa, and on its acquisitions of the Rolls-Royce aero-derivative gas turbine business and the Invensys rail business
  • Takeda in relation to its US$62bn offer for Shire plc, the largest ever outbound M&A deal by a Japanese company
  • Deutsche Börse AG on its terminated merger with London Stock Exchange, having previously acted on its planned merger with NYSE Euronext
  • Glencore on its $29bn merger with Xstrata to create the world’s leading trading and mining company
  • Air France KLM on the defense of the air cargo cartel investigations and follow-on litigation

Professional experience

2005 to date Partner, Linklaters, New York
2004 - 2005 Counsel, Shearman & Sterling LLP, New York
1994 - 2004 Associate, Shearman & Sterling LLP, New York


1994 - Fordham University School of Law, J.D., Managing Editor, Fordham Law Review
1989 - College of the Holy Cross, B.A., Economics


Co-author, “Setting Sail From the Safe Harbor - When an Analyst Call Triggers an Antitrust Probe”, Corporate Counsel, 21 January 2011