Professional Biography
Shylah Alfonso

Shylah R. Alfonso Partner

Firmwide Chair, Antitrust & Unfair Competition Litigation Practice

  • Seattle

    D +1.206.359.3980

    F +1.206.359.9000

    Seattle

    1201 Third Avenue, Suite 4900

    Seattle, WA 98101-3099

    +1.206.359.3980

    SAlfonso@perkinscoie.com

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Overview

Shylah Alfonso is an innovative problem solver who delivers. Focusing on antitrust counseling and litigation, antitrust clearance for mergers and acquisitions, class action and complex commercial litigation, and intellectual property and fair, reasonable, and nondiscriminatory (FRAND) litigation, she thrives on complex matters and regularly leads large cross-office and cross-disciplinary teams.

Shylah has extensive experience working with multinational companies across the market spectrum, including companies looking to enter the U.S. market. Whether involving the Federal Trade Commission (FTC), the U.S. Department of Justice (DOJ), state attorneys general, or private litigants, she has represented manufacturers, retailers, distributors, research and development companies, and patent portfolio holders in a range of industries. These include telecommunications, social networking, big data, gaming, platform markets, semiconductor, computer software, pharmaceuticals, manufacturing, retail, the internet, and aerospace. She has particularly deep experience working with technology companies on issues arising at the intersection of intellectual property and antitrust.

Shylah also brings a strategic and pragmatic approach to counseling and training companies on the antitrust aspects of pricing, vertical restraints, distribution agreements, IP acquisition and licensing, joint ventures, trade association and standard-setting organization participation, and other transactions or trade activities. Representative clients have included Microsoft, LinkedIn, Nintendo of America Inc., HTC, REI, Starbucks, Costco Wholesale Corporation, T-Mobile, Simplot, and The Boeing Company.

Ranked by Chambers USA Two Years in a Row

Antitrust – Band 1

Professional Recognition

  • Listed in Chambers USA as "America's Leading Lawyer" for Antitrust Band 1, 2022 – 2023
  • Listed in Best Lawyers in America: Commercial Litigation; Litigation - Intellectual Property, 2024
  • Listed in Washington Law and Politics, “Rising Stars of Washington Law”

Professional Leadership

  • American Bar Association, Antitrust Section Federal Civil Enforcement Committee, Co-Chair, 2018 – 2022; Vice-Chair, 2015 – 2018
  • Washington State Bar Association, Consumer Protection, Antitrust and Unfair Business Practice Section, Chair, 2012 – 2014; Executive Committee, 2007 – 2010, 2011 – 2016
  • National Partner Compensation Committee, Perkins Coie LLP, 2016 – 2021; Chair, 2018 – 2019
  • National Partner Compensation Resource Committee, Perkins Coie LLP, 2018 – 2020; Chair, 2020 – 2022
  • National Strategic Diversity Committee, Perkins Coie LLP, 2012 – 2018
  • Washington Wine Commission, Board Member, 2018 – present
  • Washington Wine Institute, Vice President, 2010 – 2017
  • National Associate and Counsel Evaluation Committee, Perkins Coie LLP, 2013  2016

Related Employment

  • Attorney General of Washington, Law Clerk, 2000
  • Seattle Public Defender’s Office, WA, Intern Investigator, 1997

Experience

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Bar and Court Admissions

  • Washington
  • U.S. Court of Appeals for the Ninth Circuit
  • U.S. Court of Appeals for the Tenth Circuit
  • U.S. District Court for the Western District of Washington
  • U.S. District Court for the District of Colorado

Education

  • University of Washington School of Law, J.D., with high honors, 2002, Associate Editor-In-Chief, Washington Law School Review
  • University of Washington, B.A., Political Science/Society and Justice, 1998

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