For more than four decades, Fenwick & West LLP has helped some of the world’s most recognized companies become, and remain, market leaders. From emerging enterprises to large public corporations, our clients are leaders in the technology, life sciences and cleantech sectors and are fundamentally changing the world through rapid innovation.  MORE >

Fenwick & West was founded in 1972 in the heart of Silicon Valley—before “Silicon Valley” existed—by four visionary lawyers who left a top-tier New York law firm to pursue their shared belief that technology would revolutionize the business world and to pioneer the legal work for those technological innovations. In order to be most effective, they decided they needed to move to a location close to primary research and technology development. These four attorneys opened their first office in downtown Palo Alto, and Fenwick became one of the first technology law firms in the world.  MORE >

From our founding in 1972, Fenwick has been committed to promoting diversity and inclusion both within our firm and throughout the legal profession. For almost four decades, the firm has actively promoted an open and inclusive work environment and committed significant resources towards improving our diversity efforts at every level.  MORE >

At Fenwick, we are proud of our commitment to the community and to our culture of making a difference in the lives of individuals and organizations in the communities where we live and work. We recognize that providing legal services is not only an essential part of our professional responsibility, but also an excellent opportunity for our attorneys to gain valuable practical experience, learn new areas of the law and contribute to the community.  MORE >

Year after year, Fenwick & West is honored for excellence in the legal profession. Many of our attorneys are recognized as leaders in their respective fields, and our Corporate, Tax, Litigation and Intellectual Property Practice Groups consistently receive top national and international rankings, including:

  • Named Technology Group of the Year by Law360
  • Ranked #1 in the Americas for number of technology deals in 2015 by Mergermarket
  • Nearly 20 percent of Fenwick partners are ranked by Chambers
  • Consistently ranked among the top 10 law firms in the U.S. for diversity
  • Recognized as having top mentoring and pro bono programs by Euromoney


We take sustainability very seriously at Fenwick. Like many of our clients, we are adopting policies that reduce consumption and waste, and improve efficiency. By using technologies developed by a number of our cleantech clients, we are at the forefront of implementing sustainable policies and practices that minimize environmental impact. In fact, Fenwick has earned recognition in several areas as one of the top US law firms for implementing sustainable business practices.  MORE >

At Fenwick, we have a passion for excellence and innovation that mirrors our client base. Our firm is making revolutionary changes to the practice of law through substantial investments in proprietary technology tools and processes—allowing us to deliver best-in-class legal services more effectively.   MORE >

Mountain View Office
Silicon Valley Center
801 California Street
Mountain View, CA 94041

San Francisco Office
555 California Street
13th Floor
San Francisco, CA 94104

Seattle Office
1191 Second Avenue
10th Floor
Seattle, WA 98101

New York Office
1211 Avenue of the Americas
32nd Floor
New York, NY 10036

Shanghai Office
Unit 908, 9/F, Kerry Parkside Office
No. 1155 Fang Dian Road
Pudong New Area, Shanghai 201204
P.R. China
+86 21 8017 1200

Helen Li, Ph.D.

Associate, Intellectual Property  

Mountain View 650.335.7182



Helen Li, whose field is computer engineering, specializes in the area of video signal compression technologies. Her practice concentrates on drafting and prosecution of U.S. and international patent applications for clients in computer engineering technologies with a focus on video signal compression and computer networking. Helen has extensive experiences in due diligence and freedom to operation analysis for patent acquisitions and investments.  Additionally, Helen manages small to medium sized patent portfolio for a variety of clients and regularly provides patent strategy counseling and training to clients.

During law school, Helen was honored with the Witkin Awards for Academic Excellence in Legal Analysis, Research & Writing, Chinese Trade and Investment Law, and Criminal Law, the CALI Excellence for the Future Awards in International Law, and Health Law, and High Tech Excellence Award.

While earning her Ph.D., Helen's research focused on scalable video coding and multimedia applications. Prior to joining Fenwick & West, Helen worked as a software engineer for several Silicon Valley-based technology companies.

Helen is the author of numerous international conference proceedings and leading peer-reviewed journals, including:

  • Fengling (Helen) Li, Nam Ling and Xiaokang, "Improved Update Step for Scalable Video Coding in Video Surveillance," Journal of VLSI Signal Processing Systems for Signal, Image, and Video Technology, vol. 49, no. 3, December 2007
  • Fengling (Helen) Li, Nam Ling and Stephen Chiappari, "On the Coding Efficiency of MCTF for H.264/AVC Scalable Extension," IEEE Trans. Circuit Systems on Video Technology (CSVT), vol.17, No. 6, pp.779-784, June 2007
  • Fengling (Helen) Li, Nam Ling and Stephen Chiappari, "Multi-Stage MCTF Coding Efficiency Analysis with Directed-Tree Model," 2007 IEEE International Symposium on Circuits and Systems (ISCAS), Pp. 1751-1754, May 27-29, New Orleans, 2007
  • Fengling (Helen) Li and Nam Ling, "Improved Update Steps Through Motion Vector Correlation Analysis for Scalable Video Coding," IEEE International Conference on Consumer Electronics (ICCE), pp. 485-486, January 9-11, 2006

Pro Bono Experience