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Leo Lam litigates complex intellectual property and commercial disputes that often center on technology. He has handled more than 100 patent cases, in addition to trade secrets, copyright, trademark, and general commercial matters.

Regardless of the area of technology or law, Leo drills down on results-oriented strategies for every client. He has worked with myriad technologies and industries in complex and highly technical cases, from networking and telecommunications to semiconductors to medical devices. He has appeared in jurisdictions nationwide for a long list of clients, including Comcast, Dexcom, Fortinet, Google, Netflix, OpenAI, Sandisk, TSMC, Varian Medical Systems, and Zscaler. Leo also has professional experience as a former electrical engineer and is registered to practice before the U.S. Patent & Trademark Office.

Recently, he secured a complete defense verdict from a Silicon Valley jury and attorneys’ fees and costs in a fraud dispute involving cybersecurity and networking products in which plaintiffs sought hundreds of millions of dollars in damages. He also defended Google’s Nest thermostat products against patent claims in the Western District of Texas, defeating most of the claims. An appeal of a damages finding on a remaining patent led to one of the most significant patent rulings of 2025 with the Federal Circuit Court of Appeals siding with Google after a rare en banc review.

Leo has a substantial and successful track record. Representing Comcast, he obtained dismissal of numerous patent, contract, and tort claims tied to an 11-figure damages demand in the Eastern District of Pennsylvania. Defending Zscaler, he helped secure a favorable cost-of-defense settlement covering sprawling litigations involving 14 asserted patents. For Sandisk, Leo helped defeat dozens of asserted patents across multiple forums, including a complete defense verdict in the District of Delaware and summary judgment in the Northern District of California, driving a favorable global settlement as appeals were pending.

Leo’s pro bono practice includes voting rights and immigration/asylum matters. He serves on the firm’s Compensation Committee, Diversity Equity & Inclusion Committee, and Diversity Scholars Committee.

Leo Lam litigates complex intellectual property and commercial disputes that often center on technology. He has handled more than 100 patent cases, in addition to trade secrets, copyright, trademark, and general commercial matters.

Regardless of the area of technology or law, Leo drills down on results-oriented strategies for every client. He has worked with myriad technologies and industries in complex and highly technical cases, from networking and telecommunications to semiconductors to medical devices. He has appeared in jurisdictions nationwide for a long list of clients, including Comcast, Dexcom, Fortinet, Google, Netflix, OpenAI, Sandisk, TSMC, Varian Medical Systems, and Zscaler. Leo also has professional experience as a former electrical engineer and is registered to practice before the U.S. Patent & Trademark Office.

Recently, he secured a complete defense verdict from a Silicon Valley jury and attorneys’ fees and costs in a fraud dispute involving cybersecurity and networking products in which plaintiffs sought hundreds of millions of dollars in damages. He also defended Google’s Nest thermostat products against patent claims in the Western District of Texas, defeating most of the claims. An appeal of a damages finding on a remaining patent led to one of the most significant patent rulings of 2025 with the Federal Circuit Court of Appeals siding with Google after a rare en banc review.

Leo has a substantial and successful track record. Representing Comcast, he obtained dismissal of numerous patent, contract, and tort claims tied to an 11-figure damages demand in the Eastern District of Pennsylvania. Defending Zscaler, he helped secure a favorable cost-of-defense settlement covering sprawling litigations involving 14 asserted patents. For Sandisk, Leo helped defeat dozens of asserted patents across multiple forums, including a complete defense verdict in the District of Delaware and summary judgment in the Northern District of California, driving a favorable global settlement as appeals were pending.

Leo’s pro bono practice includes voting rights and immigration/asylum matters. He serves on the firm’s Compensation Committee, Diversity Equity & Inclusion Committee, and Diversity Scholars Committee.

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The Biggest Patent Rulings of 2025: A Midyear Report

07/02/2025

Law360 has included the full Federal Circuit decision in EcoFactor v. Google among its top patent decisions from the first half of 2025. Keker, Van Nest & Peters represents Google and appealed the trial court’s decision on damages to the Federal Circuit and successfully petitioned for the en banc review. Read more

Keker, Van Nest & Peters Named a Law360 “Legal Lion" for Securing Full Federal Circuit Reversal

05/23/2025

The full Federal Circuit Court of Appeals ordered a new damages trial in a case where a jury told Google to pay $20 million for infringing an EcoFactor Inc. thermostat patent, ruling that the testimony of EcoFactor's damages expert was unreliable and should not have been admitted. Read more

Law360 Trials Group Of The Year: Keker, Van Nest & Peters

02/18/2025

Keker, Van Nest & Peters partners Bob Van Nest, Sharif Jacob, Sophie Hood and Ryan Wong reflect on the firm’s biggest trial wins which earned its place among Law360’s 2024 Trials Groups of the Year. Read more

KVP Attorneys Recognized in 2025 Editions of The Best Lawyers in America® and the Best Lawyers: Ones to Watch® in America.

08/15/2024

The 2025 edition of The Best Lawyers in America® and the Best Lawyers: Ones to Watch® in America featured 25 KVP attorneys. Read more

Am Law Litigation Daily: Another Dose of Litigator of the Week Runners-Up and Shout Outs

08/12/2022

Litigators at Keker, Van Nest & Peters land runners-up honors in the case they’re handling for the PGA Tour involving antitrust claims brought by suspended golfers who have joined the professional golf tour’s upstart rivals at the LIV Golf Invitational Series. Read more

Federal judge denies LIV golfers bid for PGA Tour postseason

08/09/2022

A federal judge in California ruled Tuesday that three golfers who joined Saudi-backed LIV Golf will not be able to compete in the PGA Tour’s postseason. Read more

Leo Lam Reveals Significance of High Court's Induced Infringement Ruling

05/27/2015

In Commil USA LLC v. Cisco Systems Inc., the Supreme Court ruled a good faith belief that a patent is invalid is not a defense to induced infringement. Read more

Keker & Van Nest Wins Jury Verdict for SanDisk In Patent Dispute With Round Rock

01/30/2015

A Delaware federal jury found that two patents held by patent holding company Round Rock Research LLC covering flash drives and memory cards were invalid, following an eight-day trial in a patent infringement case against SanDisk Corp. Read more

Keker & Van Nest Wins Summary Judgment for TSMC in Patent Dispute with Ziptronix

10/21/2014

Ziptronix had asserted nine patents and more than 500 claims over TSMC’s manufacturing of semiconductors. Read more

2014 Patent Disputes Forum

05/06/2014

Ashok Ramani, Leo Lam, Gene Paige and other distinguished faculty will share their experience and insight into critical patent litigation topics. Read more

Keker & Van Nest Helps Comcast Shake Contract Claims in Networking IP Row

07/22/2013

A Delaware federal judge dealt a blow to British Telecommunications PLC in a pair of suits claiming infringement of several of data networking patents it has licensed, tossing the corporation's contracts counterclaims against Cox Communications Inc. and Comcast Corp. Read more

On Behalf of HTC, Keker & Van Nest Secures Deal To End Smartphone Patent Suits

11/14/2012

As lead counsel for HTC, we helped our client reach a global settlement that includes the dismissal of all current lawsuits and a 10-year license agreement. Read more

Federal Circuit Affirms Win for Comcast

09/14/2012

Keker & Van Nest wins a complete victory in patent infringement case. Read more

23 Keker & Van Nest Attorneys Named "Best Lawyers"

08/28/2012

The firm receives top rankings for bet-the-company, intellectual property, criminal defense, securities, commercial, legal malpractice, and appellate litigation. Read more

17 Partners Selected for 2012 Best Lawyers in America

09/01/2011

Keker & Van Nest partners were recognized in more than ten categories, including bet-the-company litigation, criminal defense, and intellectual property litigation. Read more