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Jessica Tseng Hasen

Profile photo for Jessica Tseng Hasen
Profile photo for Jessica Tseng Hasen
Senior Counsel

Jessica Tseng Hasen

  • US Co-Lead, Advance
  • Seattle
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Jessica is a seasoned e-discovery strategist in high-stakes litigation and regulatory matters, and a driving force behind the firm’s NewLaw practice.

Jessica Tseng Hasen is a leading authority in e-discovery, ranked by Chambers USA nationwide for e-discovery and information governance. She architects technology-enabled e-discovery strategies built to withstand scrutiny in the most demanding litigation and regulatory environments, spanning the aviation, technology, and consumer sectors. Jessica has led discovery efforts involving tens of millions of records, managed complex multidistrict matters, and directed AI-driven reviews, always with a sharp focus on her clients’ legal and business priorities. She also counsels clients on litigation readiness and information governance issues, bringing the same rigor to proactive risk management that she applies in active disputes. 

As the leader of Ashurst Perkins Coie's NewLaw practice, Jessica drives innovation at scale—designing people-process-technology models that fundamentally reshape how legal teams operate and deliver. She partners with clients to tackle high-volume, repeatable, and technology-intensive legal work, deploying integrated teams, streamlined workflows, and precision-fit technology to produce legally rigorous, business-aligned outcomes with greater speed, consistency, and transparency. 

 Jessica is an active member of the Sedona Conference Working Group 1, most recently leading the brainstorming group regarding the discoverability of AI, and a sought-after speaker at premier legal technology conferences. Her pro bono work has included civil rights litigation and anti-trafficking cases—work that reflects her commitment to using her skills where they matter most. 

Education & Credentials

Education

  • Seattle University School of Law, J.D., cum laude
  • University of Washington, B.A., History; Political Science

Bar and Court Admissions

  • Washington
  • U.S. District Court for the Western District of Washington

Professional Recognition

  • Ranked by Chambers USA, as "America's Leading Lawyers" for E-Discovery & Information Governance, 2026

Impact

Professional Leadership

  • Listed in Chambers USA "America's Leading Lawyers" for Nationwide: E-Discovery & Information Governance, 2026
  • The Sedona Conference, WG1, Brainstorming Group on Possession, Custody or Control, 2023-present
  • Relativity Attorney Advisory Board, 2022-present
  • The Sedona Conference Working Group on Electronic Document Retention and Production (WG1), Member

Community Involvement

  • Legal Voice, Volunteer, 2008-present
  • Legal Voice, Chair, Raise Your Voice Committee, 2011-2013
  • International Legal Technology Association, Member, 2012-present
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