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Desktop Image: O'Hollaren, Trisha
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Trisha Parikh O'Hollaren

She/Her

Associate

T 503.778.5387 Portland
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Trisha is a litigator whose practice focuses on white-collar defense and investigations, and antitrust and competition.

She has broad experience in white-collar defense and investigations, representing clients in criminal, civil, and internal investigations as well as enforcement actions. She routinely represents clients in front of the DOJ, SEC, CFTC, and state enforcement agencies, including representing clients in parallel criminal and civil proceedings. Her clients come from a broad range of industries including financial services, healthcare, food and beverage, technology, fintech, and non-profits.

Trisha's antitrust experience includes representing clients, both plaintiffs and defendants, in civil and criminal matters in state and federal courts premised on violations of antitrust and unfair competition laws. She also represents clients facing antitrust and unfair competition investigations by the DOJ, FTC, and state enforcement agencies. Trisha also routinely provides clients with antitrust advice and counseling.

In addition to her white-collar and antitrust work, Trisha routinely handles complex commercial litigation matters involving business and contractual disputes, trade secrets, civil fraud, and mass torts.

White Collar Defense & Government Investigations

*Denotes an attorney's experience prior to joining Davis Wright Tremaine
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Antitrust & Competition

*Denotes an attorney's experience prior to joining Davis Wright Tremaine
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Complex Civil Litigation

*Denotes an attorney's experience prior to joining Davis Wright Tremaine
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Admitted to Practice

  • California, 2017
  • Oregon, 2023
  • Washington, 2025
  • U.S. District Court, Northern District of California
  • U.S. District Court, Southern District of California
  • U.S. District Court, Central District of California
  • U.S. District Court, District of Oregon
  • U.S. Court of Appeals, 9th Circuit

Education

  • J.D., University of Michigan Law School, 2017
    • Editor, Michigan Journal of Environmental and Administrative Law
  • B.A., Economics & Political Science, University of California, Los Angeles, 2013,
    • Highest Honors in Political Science, cum laude

Languages

  • Spanish, Gujarati

Memberships & Affiliations

    • Women's White Collar Defense Association
    • Federal Bar Association

Background

    • Litigation Associate, Gibson Dunn & Crutcher LLP, San Francisco, 2021-2023
    • Litigation Associate, O'Melveny & Myers LLP, San Francisco, 2017-2021
    • Summer Associate, O'Melveny & Myers LLP, New York, 2016
    • Legal Intern, Securities and Financial Fraud, U.S. Department of Justice – Criminal Division, Washington, D.C., 2015
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