Walker Stevens Cannom Yang LLP

David Yang

David Yang is a business, technology, and intellectual property lawyer based in Los Angeles, California.


David Yang is a partner of the firm and focuses on business, technology, and intellectual property law. He is based in Los Angeles and works with clients across the United States and Asia.

David studied both EECS and law at Berkeley. He graduated in the top 10% of his law school class.

David obtained an engineering degree and worked in industry for several years before attending law school. David’s experience in business and technology helps him understand and solve the most difficult problems faced by his clients.

David is fluent in Chinese. David's language skills and cultural fluency allow him to be a highly effective adviser regarding his clients' cross-border transactions and disputes.

In his legal career, David has worked with established companies such as Apple, ESPN, HP, Hon Hai Precision Industry (Foxconn), Intel, Senao Networks, and WatchGuard Technologies, as well as numerous startups, entrepreneurs, and creative individuals.


General Commercial Counseling

David advises companies and entrepreneurs regarding a wide range of issues that arise in their businesses. He has assisted clients with many commercial transactions and contracts, including financing agreements, patent and technology sales and licenses, purchase and supply agreements, and real estate leases.


David is adept at handling legal matters that involve complex technological issues. David has worked on matters involving a wide array of technologies, including:

David’s strong grasp of business and technology issues helps him understand—and solve—his clients' most difficult legal problems.
  • mobile communications
  • wireless networking
  • semiconductors
  • cloud and web services
  • cybersecurity and encryption
  • e-commerce and online advertising
  • gaming
  • virtual and augmented reality
  • drones and unmanned vehicles
  • precision manufacturing

David is able to read software source code and circuit schematics, and has used this ability to develop winning legal arguments for his clients in numerous cases.

Intellectual Property – Patents, Copyrights, and Trademarks

David has a broad intellectual property practice.

David advises clients regarding obtaining patent, copyright, and trademark protection for their inventions, creative works, and brands.

David also advises and defends clients when they are accused of infringing the intellectual property rights of others. David helps his clients negotiate favorable resolutions of such claims, and defends them in litigation when a quick resolution is unavailable. David has handled scores of patent infringement cases in courts across the United States and has also represented clients facing claims of software piracy.

Cybersecurity and Information Privacy

David has a special interest in both the technology and the law of data security.

David has worked with several of the world’s leading experts in security and encryption to understand the strengths and weaknesses of the current technologies in these areas. David’s level of technical understanding of these issues is uncommon among lawyers and allows him to provide relevant and well-founded advice to clients regarding their data security issues.

In law school, David did research in data privacy and worked on video surveillance issues as a member of the Samuelson Law, Technology & Public Policy Clinic.


David has achieved success for his clients in numerous significant litigation matters.

David represents clients in both commercial and intellectual property litigation. David has handled cases in courts across the United States, before the U.S. International Trade Commission, and before the Patent Trials and Appeals Board. 

Highlights of David's litigation practice include the following:

Networking products litigation – David has been lead counsel in numerous patent infringement actions involving wireless and wired networking products, including IEEE 802.11 (Wi-Fi), IEEE 802.3 (Ethernet), cellular, and Bluetooth products.

David most commonly represents defendants in patent litigation. He has devised successful invalidity and noninfringement arguments against dozens of patents.

Global smartphone litigation – David was part of a team that defended a major smartphone maker in a series of related patent infringement disputes around the world. David had primary responsibility for developing the defenses for over a dozen patents, each of which was found not infringed and/or invalid or was voluntarily dismissed by the plaintiff.

Semiconductor litigation – David has defended a leading semiconductor company in several cases involving its microprocessors, systems on a chip, and network adapters.

Security technology litigation – David was the primary lawyer on a matter involving the encryption and biometric security technology in a major PC maker’s computers and operating systems.

Cloud services litigation – David represented a leading software company in asserting its web services patents against a competitor. David devised arguments that defeated the defendant's attempt to invalidate the patents in inter partes reviews at the U.S. Patent and Trademark Office.

Web commerce litigation – David was part of a team that successfully defended a major online retailer in a case involving its web and backend e-commerce technology.

RFID products litigation – David was part of a team that defended a manufacturer of radio frequency identification (RFID) products in a patent case brought by a larger competitor.

DRAM antitrust litigation – David was part of a team that defended an innovator in DRAM technology against antitrust claims brought by major memory manufacturers.

(213) 298-3657


University of California, Berkeley, School of Law, J.D., 2006, Order of the Coif (top 10% of class)

University of California, Berkeley, B.S., 1999, Electrical Engineering & Computer Science

Bar Admissions


U.S. Patent and Trademark Office

Language Skills

Fluent in Chinese (Mandarin)

Community Activities

Asian Americans Advancing Justice – Los Angeles, Member of Pro Bono Advisory Council

California Lawyers for the Arts, Pro Bono Panel Attorney

First Generation Professionals at UC Berkeley School of Law, Mentor

Prior Affiliations

Munger, Tolles & Olson LLP

Wilmer Cutler Pickering Hale and Dorr LLP


David Yang
Walker Stevens Cannom Yang LLP
500 Molino Street, Suite 118
Los Angeles, California 90013

(213) 298-3657

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