Quyen Ta

Tel. (415) 773-6673


UC Berkeley School of Law , J.D., 2003

UC Los Angeles, B.A., summa cum laude, 1999

Other Experience

Alameda District Attorney's Office, 2011

Asian Law Caucus

National Partnership for Women & Families


Hon. Lawrence K. Karlton
U.S. District Court, Eastern District of California, 2004-2006

Bar Admissions


Quyen Ta

Quyen Ta litigates complex commercial matters. She focuses her practice on intellectual property, securities, and other complex business disputes. She has tried numerous criminal and civil cases in state and federal courts, including five as first-chair. Ms. Ta was a member of a trial team that secured a trial victory and settlement publicly valued at more than $300 million for Taiwan Semiconductor Manufacturing Company.

Ms. Ta has represented individual and institutional clients in various industries, including financial services, semiconductor, pharmaceutical, internet, and communications.

She serves in numerous leadership positions in minority bar organizations and speaks frequently on diversity in the legal profession.

Cases of Note

Taiwan Semiconductor Manufacturing Company v. Semiconductor Manufacturing International Corporation: We represented TSMC against China's then-leading semiconductor manufacturer, SMIC, in the largest trade secret misuse case tried to date. SMIC owed its very existence to technology stolen from our client. 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. The case serves as precedent for the strong protection afforded by California's trade secret statute, even where the actual theft occurred in Asia.

Purdue Pharma v. Impax Laboratories, Inc.: We defended Impax Laboratories, Inc. against patent claims related to generic oxycodone products. Following the Federal Circuit’s reversal and remand of inequitable conduct findings in an earlier lawsuit brought against another defendant, we brought a revised challenge under the terms of the Federal Circuit’s order. We then secured a settlement that released our client from all past liability, and gave the company a limited license.

Ziptronix v. Taiwan Semiconductor Manufacturing Company: We won summary judgment of non-infringement for Taiwan Semiconductor Manufacturing Company, Ltd. and its subsidiary TSMC, North America in a long-running patent lawsuit brought by North Carolina semiconductor company, Ziptronix, Inc. Ziptronix had asserted nine patents and more than 500 patent claims directed to TSMC’s manufacturing of semiconductors for use in backside-illumination image sensors used predominantly in smartphone cameras. On behalf of TSMC, we defeated Ziptronix’s claims by arguing that the territorial limits of U.S. patent law prohibited reaching TSMC’s business transactions and manufacturing operations in Taiwan.

Eastman Kodak Co. v. HTC Corp.: We defended HTC in a five-patent investigation brought by Kodak before the International Trade Commission. The action accused dozens of mobile devices of infringing digital imaging patents that covered a range of technologies, including image capture, processing, display, compression and transmission. Consistent with ITC practice, our defense took place on a fast schedule, with a hearing date that was set approximately one year from the start of the investigation and fact discovery being completed in approximately six months. Just prior to the scheduled hearing date, the case was resolved when the Kodak patent portfolio was sold.

Securities and Exchange Commission v. Former Chief Financial Officer: We defended the former chief financial officer of a San Francisco-based hedge fund firm against charges of insider trading. The case was part of the government’s push to make insider trading the focus of financial fraud prosecution. The Securities and Exchange Commission named our client and several others in a civil suit, alleging they made more than $8 million trading on stocks based on insider tips. We knocked out half of the case on summary judgment and settled the remainder on very favorable terms.

Securities and Exchange Commission v. Chief Executive and Chief Financial Officers: We represented the CEO and CFO of a communications technology company in a Securities and Exchange Commission (SEC) investigation, a lawsuit filed with the SEC, related civil lawsuits filed by investors, and a related bankruptcy action. We resolved all of the lawsuits on favorable terms.

United States v. McKesson Corporation: We won a complete defense judgment in favor of a major medical supply company after a month-long trial of a qui tam action alleging violations of the False Claims Act and Anti-Kickback Statue. This victory was listed by the National Law Journal as one of the year's five most significant trial wins.

Plaintiff v. Law Firm: We successfully defended at trial an Am Law 50 law firm and one of its former partners against a $100 million claim. The plaintiff alleged malpractice and breach of fiduciary duty related to estate planning. After an eight-week trial in California state court, we won a complete victory.

Plaintiffs v. Individuals: Plaintiffs filed breach of contract and many other state claims including fraud and unjust enrichment against our clients. We successfully filed a demurrer on more than half of the claims, eventually leading to a successful settlement.

Plaintiff v. Westamerica Bank: We successfully tried this breach of contract lawsuit, filed in Solano County Superior Court. We won a favorable verdict for the plaintiff on the liability phase.

Awards and Honors

  • Best Lawyers Under 40, National Asian Pacific American Bar Association (NAPABA), 2014
  • Women Leaders in Tech Law, The Recorder, 2014
  • Joe Morozumi Award For Exceptional Legal Advocacy, Asian American Bar Association, 2014
  • Diversity Award, BASF Barristers Club, 2013
  • Lawyer on the Fast Track, The Recorder, 2013
  • Dale Minami Public Interest Fellowship Alumni of the Year Award, 2013
  • Bar Association of San Francisco Award of Merit, 2012
  • Rising Star, Northern California Super Lawyers, 2012-2015
  • 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
  • UC Berkeley School of Law Moot Court Brief Writing Award, 2001
  • Phi Beta Kappa


  • "Succeeding In Your First 10 Years of Practice and Beyond," Barristers Club Annual Meeting, October 2012
  • "The Importance of Inclusion: Diversity in the Legal Profession," Berkeley Law, March 2012  

Professional Affiliations

  • Lawyer Representative of the Northern District of California to the Ninth Circuit Judicial Conference, 2013-2016
  • Asian Pacific American Bar Association of Silicon Valley, Judiciary Committee, Co-Chair, 2013
  • Northern California Regional Governor, National Asian Pacific American Bar Association (NAPABA), 2012-2014
  • California State Bar Committee on Federal Courts, 2012-2015
  • Bar Association of San Francisco: Board Member and Minority Bar Coalition Representative, 2011-2012; Equality Committee Co-Chair, 2012-present; Board Member 2013-2016
  • 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: President, 2010; Board Member, 2006-present
  • Barristers Club: Diversity Director, 2010; Board Member, 2010-2011
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