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Catherine A. Peterson
Of Counsel
Antitrust and Competition
San Francisco
cpeterson@wsgr.com

D415-947-2091

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Catherine A. Peterson is Of Counsel in the San Francisco office of Wilson Sonsini Goodrich & Rosati, where she is a member of the firm's antitrust practice. Her work encompasses a variety of antitrust matters including litigations and mergers and acquisitions. Catherine has extensive experience in all stages of litigation—from pre-litigation counseling through trial. She has taken and defended depositions of witnesses and draws on her background in economics to serve her antitrust clients including working closely with expert economists.

Prior to joining the firm, Catherine was an antitrust and commercial litigation associate at a leading international law firm in Washington, D.C. She previously clerked for the Honorable John P. Bailey, chief judge of the U.S. District Court for the Northern District of West Virginia. Prior to law school, she served eight years in the United States Marine Corps Reserve, including a tour in Iraq.

Catherine maintains an active pro bono practice and has represented persons charged with the death penalty, veterans, and asylum seekers.

She is fluent in French and Romanian.

Experience

Catherine A. Peterson is Of Counsel in the San Francisco office of Wilson Sonsini Goodrich & Rosati, where she is a member of the firm's antitrust practice. Her work encompasses a variety of antitrust matters including litigations and mergers and acquisitions. Catherine has extensive experience in all stages of litigation—from pre-litigation counseling through trial. She has taken and defended depositions of witnesses and draws on her background in economics to serve her antitrust clients including working closely with expert economists.

Prior to joining the firm, Catherine was an antitrust and commercial litigation associate at a leading international law firm in Washington, D.C. She previously clerked for the Honorable John P. Bailey, chief judge of the U.S. District Court for the Northern District of West Virginia. Prior to law school, she served eight years in the United States Marine Corps Reserve, including a tour in Iraq.

Catherine maintains an active pro bono practice and has represented persons charged with the death penalty, veterans, and asylum seekers.

She is fluent in French and Romanian.

Education
  • J.D., University of Minnesota Law School

    Magna Cum Laude; Recipient, Graham Macfarlane Torrance Memorial Scholarship; Dean’s Elite Scholarship; Staff member, Minnesota Journal of Law, Science & Technology; Intellectual Property Moot Court

  • B.S., Economics, The George Washington University

    Commencement speaker, National Society of Collegiate Scholars

Admissions
  • State Bar of California
  • U.S. District Court for the Northern District of California
Credentials
Education
  • J.D., University of Minnesota Law School

    Magna Cum Laude; Recipient, Graham Macfarlane Torrance Memorial Scholarship; Dean’s Elite Scholarship; Staff member, Minnesota Journal of Law, Science & Technology; Intellectual Property Moot Court

  • B.S., Economics, The George Washington University

    Commencement speaker, National Society of Collegiate Scholars

Admissions
  • State Bar of California
  • U.S. District Court for the Northern District of California
Focus Areas
  • Antitrust Civil Enforcement
  • Antitrust Compliance and Business Strategy
  • Antitrust Criminal Enforcement
  • Antitrust Litigation
  • Antitrust Merger Clearance
  • Antitrust and Competition
  • Federal Trade Commission
Recent Insights
Client Highlights
Wilson Sonsini Helps Secure Favorable Settlement for Imiracle and Shenzhen iMiracle Technology Co.
A Wilson Sonsini team recently secured a favorable settlement for Imiracle (HK) Limited and Shenzhen iMiracle Technology Co. (collectively, “iMiracle”) in litigation related to the marketing and distribution of Elf Bar-branded flavored disposable vaping devices. NJOY, a U.S.-based manufacturer of tobacco- and menthol-flavored vaping devices, had claimed that iMiracle, as well as several brick-and-mortar and online retailers, had violated the California Unfair Competition Law by marketing, selling, and/or distributing flavored vaping devices in California in violation of California’s statutory ban on flavored vaping devices. 

In January 2025, Wilson Sonsini successfully secured the dismissal of a third company, Guangdong Qisitech Co., Ltd. Following fact discovery, the firm was able to secure a favorable settlement requiring only that iMiracle not sell or ship flavored disposable vaping devices in California for as long as California’s laws regarding flavored vaping devices remain in force.
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Alerts
Department of Justice Signals Increased Scrutiny for Information Sharing
The U.S. Department of Justice (DOJ) sent a strong message recently about information exchanges. In a “Statement of Interest”1 filed on October 1, 2024, the DOJ stated that "standalone information sharing … can undermine the competitive process; increase coordination among rivals; and cause an asymmetry of power in the market" and, therefore, can constitute a violation of the antitrust laws.2 Thus, according to the DOJ, information exchanges may, themselves, constitute an antitrust violation in certain circumstances.
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