Jeannine Yoo Sano

Partner, Silicon Valley


Jeannine has consistently been named among the World’s Leading Patent Professionals by IAM Patent 1000: “Technology industry standard bearers … look to White & Case to prepare cases as if they are going to trial; the firm does this exceptionally well and often nets early wins as a result. Jeannine Yoo Sano is a master in this regard” (2018); “an extraordinary trial lawyer” (2017): “She really gets the technology … has a great courtroom presence” (2016); “She belongs in court ….” (2015).


Jeannine Sano'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 the Women Lawyers of the Eastern District of Texas Advisory Committee and the Stanford Alumni Association.

Bars and Courts
US Supreme Court
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 Courts for the Central, Eastern, Northern and Southern Districts of California
US District Court for the Northern District of Illinois
University of California, Hastings College of the Law


AB with Honors, Human Biology
Stanford University




American Imaging Services, Inc. v. Autodesk, Inc.
Obtained complete defense jury verdict of non-infringement of all asserted claims and invalidity on all asserted grounds in patent litigation involving CAD software. 

Coffelt v. NVIDIA et al.
Obtained judgment of invalidity in patent litigation involving computer graphics software, affirmed by Federal Circuit, Cert Petition to Supreme Court denied.

Walker Digital v. Google
Obtained judgment of invalidity of both asserted patents and award of all requested costs following contested motion.

Uniloc Luxembourg S.A. et al. v. et al.
Obtained judgment of invalidity in patent litigation involving software licensing; affirmed on appeal.

VideoShare v. YouTube LLC et al.
Obtained judgment of invalidity of asserted patents, affirmed on appeal.

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; final determination affirmed on appeal.

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 Intervenor.

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. 

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.

Microtune v. Broadcom
Represented Broadcom in patent litigation involving RF tuner technology.

Glue-Fold, Inc. v. Slautterback Corp. et al.
Obtained summary judgment in trade secret litigation involving adhesive manufacturing technology, affirmed on appeal, plus award of attorneys' fees. 

Mobile Internet Technologies v. E-LOAN et al.
Represented E-LOAN in litigation involving trade secret and related patent claims involving on-line auto sales and financing. Prevailed in bench trial; plaintiff's appeal dismissed.

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 and Recognition

World's Leading Patent Professionals 2015 - 2018, IAM Patent 1000 (Individual Silver Ranking)

IP Stars, Managing IP 2014 - 2018

Top Intellectual Property Litigators 2014, Daily Journal

Northern California SuperLawyers, Intellectual Property, 2004 - 2018, San Francisco Magazine

Top 250 Women in IP 2013, Managing IP

Client Service All-Star 2012, BTI Consulting

Chambers USA:  Band 3 California, Intellectual Property 2008

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