Barbara Wootton represents clients in government reviews of mergers and acquisitions, antitrust litigation, defense of government investigations, counseling, and establishing effective antitrust compliance and training programs. Ms. Wootton has considerable experience in competition matters involving the pharmaceutical sector in particular and has represented clients in a range of other industries including biotechnology, private equity, telecommunications, consumer products, and real estate. Ms. Wootton also regularly counsels and represents clients regarding filing obligations under the Hart-Scott-Rodino Act.

Before joining Arnold & Porter, Ms. Wootton served as judicial clerk to the Honorable Murray M. Schwartz, United Sates District Court for the District of Delaware and to the Honorable John M. Steadman of the District of Columbia Court of Appeals. Prior to entering law school, Ms. Wootton worked as an economist at the US Department of Labor, Bureau of Labor Statistics.


  • Monsanto Company in connection with the proposed sale of Precision Planting to Deere & Company, including the DOJ's litigation challenging the transaction.
  • Various pharmaceutical companies in "reverse payment" government antitrust investigations by the FTC and State Attorneys General regarding whether settlement of pharmaceutical patent litigation illegally delayed generic competition.
  • Koito Manufacturing Co., Ltd. in a multi-district antitrust litigation involving automotive lamps and HD ballasts. In re Auto Parts Antitrust Litigation.
  • TPG Capital, L.P. in civil antitrust litigation involving the LBO bidding practices of leading private equity firms.
  • Ferring Pharmaceuticals in defending monopolization class actions and state attorneys general investigation alleging that enforcement of allegedly fraudulently obtained patent kept generic competitors off the market. In re DDAVP Antitrust Litigation.
  • Wyeth in Federal Trade Commission lawsuit challenging the settlement of a patent infringement dispute (resolved by consent decree).
  • General Electric Company with respect to Department of Justice civil antitrust investigation into certain contracting and exclusivity practices (DOJ closed its investigation).


The Legal 500 US
Antitrust: Merger Control (2017)


  • JD, Georgetown University Law Center, 1998, magna cum laude, Order of the Coif
  • MS, University of Wisconsin - Madison, 1993
  • AB, Cornell University, 1987
  • District of Columbia
  • Maryland
  • US District Court, District of Delaware, The Honorable Murray M. Schwartz
  • District of Columbia Court of Appeals, The Honorable John M. Steadman

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