Quyen is a sought-after and experienced litigator and trial lawyer. Her practice focuses on consumer class action defense, intellectual property, trade secrets misappropriation, and other high-stakes, complex civil litigation. She has tried numerous cases and has handled a significant number of civil matters in state courts, federal courts, and before the International Trade Commission. Prior to joining Boies Schiller Flexner, Quyen was a partner at Keker, Van Nest & Peters.

Quyen serves as lead counsel in numerous class action matters in state and federal courts throughout the country in various industries. She regularly litigates consumer statutes as varied as Business & Professions Code Sections 17200/17500, Florida’s Deceptive and Unfair Trade Practices Act (FDUTPA), New Jersey’s Truth in Consumer Contract, Warranty, and Notice Act (TCCWNA), California’s Private Attorneys General Act (PAGA), the Electronic Fund Transfers Act (EFTA), and the Telephone Consumer Protection Act (TCPA). She recently litigated a class action lawsuit and successfully had a nearly $1 billion claim dismissed at the summary judgment stage. She also led her team in defeating several high-stakes class action claims worth over $120 million through dispositive motion practice. Quyen’s representative clients include Public Storage, Ebates Inc., CubeSmart, Molina Healthcare, Taiwan Semiconductor Manufacturing Company, NRG Energy, JM Eagle, Oportun, and McDonald's.

Aside from her class action defense practice, Quyen has litigated numerous matters in state and federal court in various substantive areas of law, including patent law, trade secrets misappropriation, legal malpractice (defense), false claims act, securities, and general civil litigation (breach of contract and other complex business disputes).

Quyen was selected by The Recorder as a Lawyer on the Fast Track based on her career achievements and leadership roles within her practice and the larger community. She has also been selected as a Women Leaders in Tech Law by The Recorder, and was named one of the nation's Best Lawyers Under 40 by the National Asian Pacific American Bar Association, a 10,000-plus member bar organization. She recently received the 2018 Young Alumna Award from UC Berkeley School of Law. She has been recognized by various other bar organizations for her professional achievements and community service. Recognized as a leader in the Northern District of California, she was selected by the federal judges to serve a three-year term as a Lawyer Representative. In 2016, she co-chaired the Northern District's Lawyer Representatives Committee.

Quyen is active in bar and community activities, and speaks frequently on inclusion issues.


Quyen's representative matters include:

Class Actions

  • Defended the largest U.S. self-storage operator, Public Storage, in a consumer class action lawsuit in Miami federal court seeking restitution for insurance premiums paid to Public Storage by its customers. Prevailed on a summary judgment motion dismissing the class’ claimed $1 billion RICO claim. The matter settled favorably two days before trial
  • Defended Public Storage in two class actions alleging violations of California Business & Professions Code Section 17200 and the Consumer Legal Remedies Act. Obtained victories on demurrer, summary judgment and opposition to class certification
  • Defended Public Storage in a lawsuit brought in New Jersey District Court under the Truth-in-Consumer Contract, Warranty and Notice Act (TCCWNA) and successfully crafted decertification motion based on Spokeo v. Robins
  • Representing Molina Healthcare in various class action lawsuits across the country based on consumer statutes (California, Florida and Illinois)
  • Defending Molina Healthcare in three TCPA class action lawsuits across the country
  • Defending CubeSmart,one of the country's largest self-storage operators, in a class action lawsuit brought under Florida’s Deceptive Unfair Trade Practices Act. (FDUTPA).. The case is filed in Miami federal court and is currently pending

Intellectual Property/Trade Secrets Misappropriation

  • Represented Taiwan Semiconductor Manufacturing Company (TSMC) against Tela Innovations in the ITC and in the District of Delaware in two cases concerning patents that relate to integrated circuit design. Successfully limited the ITC investigation only to TSMC’s importations into the U.S., as opposed to TSMC’s customers; negotiated a resolution between the two companies that resulted in TSMC purchasing a portion of Tela Innovations
  • Represented TSMC when Zond threatened to sue for patent infringement on six patents in Massachusetts. On behalf of TSMC, filed a declaratory-judgment action in Delaware and successfully moved the court to order Zond not to pursue parallel litigation in Massachusetts. In tandem with institution of IPRs on several of Zond’s patents, negotiated a settlement with Zond for a fraction of other settlements
  • Won summary judgment of non-infringement for Taiwan Semiconductor Manufacturing Company and its subsidiary TSMC North America in a long-running patent lawsuit brought by North Carolina semiconductor company Ziptronix Inc.
  • Represented TSMC against China's then-leading semiconductor manufacturer, SMIC, in the largest trade secret misuse case tried to date. Following a jury verdict on liability in favor of TSMC, SMIC agreed to pay $200 million in cash and approximately $130 million of its company stock
  • Represented Silicon Valley, venture-backed microlending company in pursuing potential trade secrets and civil claims against one of its former co-founders and executives
  • Defended HTC in a five-patent investigation brought by Kodak before the International Trade Commission

Other Complex Civil

  • Successfully defended at trial an Am Law 50 law firm and one of its former partners against a $100 million claim in California state court, which resulted in a complete defense verdict
  • Brought lawsuit against a Bank on behalf of its former CFO when the Bank failed to meet its contractual duties to pay out promised compensation. Obtained a defense verdict on the contract claim. The case settled shortly before the jury rendered a verdict on the tort phase of the trial
  • Currently representing a German paint manufacturing lawsuit in a qui tam matter filed in the N.D. Cal.

Publications & Presentations

Faculty, Class Actions 2018: Litigating, Defending & Managing Class Actions, Bridgeport Continuing Education, 2018

Faculty, Mastering the Deposition, 2018 (Bridgeport Continuing Legal Education)

Panelist, Ethical Issues for In-House Counsel and Outside Counsel, CMPC and Kaiser 7th Annual CLE marathon, 2018

Faculty, Class Actions 2017: Litigating, Defending & Managing Class Actions, Bridgeport Continuing Education, 2017

Panelist, Women Who Work It: Business Development Best Practices & Lessons Learned, NAPABA Western Regional Conference, 2017

Faculty, Class Actions After Spokeo v. Robins: Supreme Court Jurisprudence, Article III Standing and Practical Implications for the Bench and Practitioners, Northern District of California Judicial Conference, 2017

Panelist, The State of Diversity and Inclusion in the Legal Profession, Institute for Inclusion in the Legal Profession, 2017

Panelist, Let's Keep Talking, Tackling Unprofessional Conduct Towards Women Attorneys, Women Attorneys Advocacy Project, 2017

Faculty, How Deposition Testimony Plays Out at Trial, 2017 (Bridgeport Continuing Education)

Faculty, Federal Bar Association, ND Cal Chapter; Class Action Symposium, 2016

Panelist, No Bosses Allowed Luncheon, CMCP Annual Business Conference, 2016

Faculty, Class Action Litigation Conference speaker, 2016 (Bridgeport Continuing Education)

Faculty, The Use of Experts, PLI Pretrial Practice Conference, 2016

Moderator, Impacting Diversity from Outside the Firm, BASF's Unmasking Diversity, 2012

Panelist, Making Partner at Big Law Firms for Diverse Attorneys, Barristers Annual Meeting, 2012


  • University of California, Berkeley School of Law, J.D.
  • University of California, Los Angeles, B.A., summa cum laude; Phi Beta Kappa



  • California
  • U.S. District Court: Northern District of California
  • U.S. District Court: Eastern District of California
  • U.S. District Court: Central District of California
  • U.S. District Court: Southern District of Florida
  • U.S. District Court: Northern District of Illinois
  • U.S. District Court: Southern District of New York
  • U.S. District Court: District of New Jersey


Lawyer Representative of the Northern District of California to the Ninth Circuit Judicial Conference: 2013-2016 (Co-Chair, 2016)

Bar Association of San Francisco: Board Member and Minority Bar Coalition Representative, 2011-2012; Equality Committee Co-Chair, 2012-2015; Board Member 2013-2016

California State Bar Committee on Federal Courts: 2012-2015

Asian Pacific American Bar Association of Silicon Valley, Judiciary Committee, Co-Chair, 2013- Present

National Asian Pacific American Bar Association (NAPABA): Northern California Regional Governor, 2012-2014

Asian Americans Advancing Justice-Asian Law Caucus: Board Member and 40th Anniversary Co-Chair, 2008-2012; Leadership Council Co-Chair, 2012-present

Vietnamese American Bar Association of Northern California (VABANC) and VABANC Law Foundation: President, 2010; Board Member, 2006-present

Bar Association of San Francisco, Barristers Club: Diversity Director, 2010; Board Member, 2010-2011


  • Hon. Lawrence K. Karlton, U.S. District Court: Eastern District of California


Top 100 Lawyer, Daily Journal (2019)

California Trailblazer, The Recorder (2019)

Rising Star, Minority Corporate Counsel Association (2018)

Berkeley School of Law, Young Alumna Award (2018)

California Minority Counsel Program Deborah J. Broyles Law Firm Diversity Leader Award

Asian Americans Advancing Justice-Asian Law Caucus, Alumnus of the Year Honoree

Vietnamese American Bar Association of Northern California, Trailblazer Award

Northern California Super Lawyers, 2012 – 2017

Best Lawyers Under 40, National Asian Pacific American Bar Association (NAPABA), 2014

Women Leaders in Tech Law, The Recorder

Joe Morozumi Award for Exceptional Legal Advocacy, Asian American Bar Association of the Greater Bay Area, 2014

Diversity Award, BASF Barristers Club

Lawyer on the Fast Track, The Recorder

Dale Minami Public Interest Fellowship Alumni of the Year Award, 2013

Bar Association of San Francisco Award of Merit, 2012

Bay Area Minority Bar Coalition Unity Award, 2010

Georgetown Women's Law and Public Policy Fellow, 2003-2004

Community Service Award, Vietnamese American Bar Association of Northern California, 2003

Prosser Award in Cities, Stratification and Separation, 2003

Prosser Award in Minority Vote Dilution, 2002

U.C. Berkeley School of Law Moot Court Brief Writing Award, 2001

Phi Beta Kappa