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Susan E. Foster

Profile photo for Susan E. Foster
Profile photo for Susan E. Foster
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Susan E. Foster

  • Seattle
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For more than 35 years, Susan has guided clients in high-stakes matters.

Susan Foster counsels on and litigates antitrust and trade regulation matters, as well as intellectual property and other business and financial disputes. She advises clients on a range of antitrust and marketing issues including distribution counseling, advertising and promotions, strategic alliances, and Hart-Scott-Rodino premerger notification matters. 

Her clients include leaders in technology and aerospace.  

Education & Credentials

Education

  • Seattle University School of Law, J.D., magna cum laude, Lead Articles Editor, Puget Sound Law Review, 1987 - 1988, 1988
  • Pacific Lutheran University, B.A., Legal Studies, 1984

Bar and Court Admissions

  • Washington
  • U.S. Court of Appeals for the Tenth Circuit
  • U.S. District Court for the Eastern District of Michigan
  • U.S. District Court for the Eastern District of Washington
  • U.S. District Court for the Western District of Washington

Professional Recognition

  • Listed in Chambers USA as "America's Leading Lawyers" in Antitrust, 2022-2024

  • Named Best Lawyers’ Seattle "Antitrust Law Lawyer of the Year," 2014, 2018, 2020, 2023; "Trade Secrets Law Lawyer of the Year," 2025

  • Listed in Best Lawyers in America: Antitrust Law; Commercial Litigation; Litigation - Antitrust; Litigation - Intellectual Property, 2018-2025; Trade Secrets, 2023-2025

  • Listed in Marquis Who's Who in American Law, Who's Who in the World, Who's Who in America and Who's Who in American Women

  • King County Bar Volunteer of the Month, September 2002

Impact

Professional Leadership

  • Perkins Coie Audit Committee, Chair, January 2004-2008
  • Perkins Coie Executive Committee, Member, 2005-2008
  • Hate Free Zone, Advisory Board, 2002-2003
  • Washington State Bar Association; Consumer Protection, Antitrust and Unfair Business Practice Section, Executive Committee, 1994-2003, Chair, 2000-2001
  • Pacific Northwest Ballet, Board of Trustees, 1997-2002
  • American Bar Association; Antitrust Section; Litigation Section - Business Torts Co-Chair Pacific Northwest Division, 1996-2001
  • Corporate Council for the Arts, Associates Program, 1993-1996
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