Jeannine Yoo Sano | White & Case LLP International Law Firm, Global Law Practice
Jeannine Yoo Sano
Jeannine Yoo Sano

Jeannine Yoo Sano

Partner, Silicon Valley

T +1 650 213 0356


Jeannine Sano has been named among the World’s Leading Patent Professionals by IAM Patent 1000 with “effusive recommendations”: “She really gets the technology … has a great courtroom presence” (2016); “She belongs in court … Her style goes down as well in Texas as it does in a California courtroom” (2015).


Jeannine's practice focuses on patent litigation in district courts across the country and before the United States International Trade Commission, in technology fields such as microprocessors, chipsets, memory, image sensors, displays and software. Her trial credentials include serving as lead trial counsel in cases in the Northern and Eastern Districts of Texas, Middle District of Florida, and Central District of California, as well as in proceedings before the United States International Trade Commission, in addition to jury and bench trials in the Western District of Texas, Northern District of California, and the Northern District of Illinois.

Highlights include a complete defense jury verdict of non-infringement and invalidity of all asserted patent claims in Texas; a final determination of invalidity/non-infringement of all five asserted patents in the ITC on behalf of respondents (affirmed by the Federal Circuit); and a jury verdict of infringement and over 100 million in damages on behalf of the patentee in Northern California.

In addition to participating in appeals before the Federal Circuit, she has presented oral argument before the California Court of Appeal on an issue of first impression on the Uniform Trade Secrets Act, resulting in affirmance of summary judgment and an award of attorneys' fees.

Jeannine has previously served as the Chair of the Patent Litigation Committee and the ITC Committee for the ABA IP Law Section, and has been selected to serve as an Early Neutral Evaluator for the Northern District of California. She has also been a guest instructor for Notre Dame Law School's trial advocacy program and a judge for the mock trial and patent law programs at Stanford Law School.

She is a member of a number of professional associations, including the Federal Circuit Bar Association, the ITC Trial Lawyers Association, the Stanford Alumni Association, and the Asian Pacific American Bar Association Silicon Valley.

Bars and Courts

  • California State Bar
  • New York State Bar
  • District of Columbia Bar
  • US Court of Appeals for the Federal Circuit
  • US District Court for the Eastern District of Texas
  • US District Court for the Northern District of Illinois
  • US District Courts for the Central, Eastern, Northern and Southern Districts of California


  • JD, University of California, Hastings College of the Law, 1994
  • AB with Honors, Human Biology, Stanford University, 1989


  • English


American Imaging Services, Inc. v. Autodesk, Inc.

Obtained complete defense jury verdict of non-infringement and invalidity for Autodesk in patent litigation involving CAD software.

Walker Digital v. Google Inc. et al.

Obtained summary judgment of invalidity of all asserted claims of both patents on behalf of Google in patent litigation involving social networking systems, as well as award of all requested costs.

In the Matter of Certain Electronic Devices, Including Mobile Phones and Tablet Computers, and Components Thereof

Obtained termination of four of five asserted patents before hearing and finding of no violation as to fifth patent in 337 Investigation involving mobile device technology on behalf of Google as Intervenor.

In the Matter of Certain Communications or Computing Devices and Components Thereof

Represented Google as Intervenor in Section 337 Investigation involving smartphones, tablet computers, and other communications devices.

In the Matter of Certain Portable Electronic Communication Devices, Including Mobile Phones, and Components Thereof

Represented Google as Intervenor in Section 337 Investigation brought by Nokia against HTC involving mobile device technology.

In the Matter of Certain Liquid Crystal Display Devices, Including Monitors, Televisions, and Modules, and Components Thereof

Obtained ID of non-infringement or invalidity as to all five asserted patents on behalf of Respondents Chimei InnoLux, InnoLux, and Chi Mei Optoelectronics USA in Section 337 Investigation involving LCD products, confirmed by Commission and final determination affirmed on appeal.

In the Matter of Certain CMOS Active Pixel Image Sensors and Products Containing Same

Represented OmniVision in Section 337 Investigation and corresponding district court litigation involving CMOS image sensor technology.

Eopus Innovations LLC v. DreamWorks Animation et al.

Represented DreamWorks, Sony Pictures Imageworks, Deluxe Entertainment, and Hydraulx in patent litigation involving computer graphics software.

Selene Communications Technologies v. Google Inc.

Represented Google in patent litigation involving Search technology.

Microtune v. Broadcom

Represented Broadcom in patent litigation involving RF tuner technology.

Speaking Engagements

"To Plead or Not to Plead", December 7, 2012: Stanford Program in Law, Science & Technology, University of Texas School of Law and Berkeley Center for Law & Technology, 2012 Advanced Patent Law Institute

Awards & Recognition

World's Leading Patent Professionals 2015 - 2016, IAM Patent 1000

IP Stars, Managing IP 2014 - 2016

Top Intellectual Property Litigators 2014, Daily Journal

Intellectual Property, Northern California SuperLawyer, 2004 - 2016, San Francisco Magazine

Top 250 Women in IP 2013, Managing IP

Client Service All-Star 2012, BTI Consulting

Top 75 Women Litigators, 2007, Daily Journal

Prominent Alumni of the University of California Hastings College of the Law in 125 Years of California Law, Daily Journal