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.
Cases of Note
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Alorica, Inc. v. Fortinet, Inc.
We represented secure networking company Fortinet, winning a complete defense verdict after a four-week jury trial in Santa Clara Superior Court where plaintiff Alorica sought compensatory damages of more than…
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Abbott Diabetes Care v. Dexcom
We defended Dexcom in the District of Delaware where Abbott asserted a dozen patents targeting Dexcom’s G6 continuous glucose monitoring technology. The Keker team narrowed the case to four patents…
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CEDC v. Bessent
We represent taxpayer and immigrant advocates in filing suit against the government to halt ICE from accessing protected taxpayer data. The court issued a preliminary injunction prohibiting ICE and DHS…
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Symantec v. Zscaler
We represented Zscaler in parallel infringement suits brought by Symantec in the District of Delaware asserting 14 patents against Zscaler’s network-security platform. We succeeded in transferring both cases to the…
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EcoFactor v. Google
We are defending Google in a series of patent cases brought by EcoFactor targeting Google’s Nest products, which are pending in the Northern District of California, which have been stayed…
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Promptu v. Comcast Cable Communications
In the Eastern District of Pennsylvania, we successfully defended Comcast against patent infringement and state-law contract and tort claims brought by Promptu targeting Comcast’s voice recognition and control technology. Following…
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AlmondNet v. FreeWheel Media
We are defending Comcast subsidiaries FreeWheel Media and Beeswax.io against infringement claims based on patents directed to targeted advertising brought by AlmondNet in the District of Delaware.
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Best Medical International, Inc. v. Varian Medical Systems, Inc. et al.
We defended Varian Medical Systems, a world leader in radiotherapy medical devices for the treatment of cancer, in the District of Delaware against patent-infringement claims brought by Best Medical International.
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Glaukos Corporation v. Ivantis, Inc.
We defended Ivantis, Inc., the maker of a revolutionary eye stent designed to treat glaucoma, in a case brought by competitor Glaukos Corporation in the Central District of California alleging…
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Summit 6 LLC v. Twitter, Inc.
We represented Twitter in a patent-infringement suit brought by Summit 6 LLC in the Northern District of Texas. In prior cases in the same court, Summit 6 had obtained large…
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Round Rock Research LLC v. SanDisk Corporation
We defended SanDisk from numerous patent assertions by Round Rock, including a total of 15 patents asserted in two separate litigations in the District of Delaware, and 12 patents asserted…
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C-Cation Technologies v. Comcast Cable Communications, LLC, et al.
We represented Comcast in a patent infringement case brought by C-Cation Technologies in the Eastern District of Texas, and a related breach of contract claim Comcast brought in the Southern…
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Comcast Cable Communications, LLC et al. v. British Telecommunications
We defended Comcast in the District of Delaware against eight patents asserted by British Telecom. The case targeted Comcast’s high-speed data and telephony services and video encryption. We also counter-asserted…
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SoftView LLC v. Apple Inc. et al.
We successfully defended HTC in a lawsuit in the District of Delaware in which the plaintiff asserted patent claims that purported to cover web-browsing technology on mobile devices. We secured…
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Ziptronix v. Taiwan Semiconductor Manufacturing Company
We won summary judgment of non-infringement for Taiwan Semiconductor Manufacturing Company, Ltd. and its subsidiary TSMC, North America in a long-running patent lawsuit brought by North Carolina semiconductor company, Ziptronix,…
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Biax Corp. v. Motorola Mobility et al.
We represented Motorola Mobility and third-party Broadcom in a patent case targeting a key technology underlying a wide variety of semiconductor chips. The case settled favorably after summary judgment briefing.
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Apple Inc. v. HTC Corp
We served as lead counsel for HTC, a Taiwan-based manufacturer of handheld devices, in its battle with Apple over smartphone technology. Apple first sued HTC in district court and before…
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Rembrandt Technologies, Inc. v. Comcast Cable Communications, LLC
We defended Comcast in a nine-patent case involving high-speed Internet and digital TV services. Rembrandt originally filed the case in the Eastern District of Texas, but in conjunction with other…
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Broadcom Corporation, et al. v. Commonwealth Scientific and Industrial Research Organisation
On behalf of Broadcom, we led a joint-defense group of wireless chip manufacturers, PC manufacturers, and cellular network carriers. The plaintiff, CSIRO, asserted patent claims that allegedly covered a wide…
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Chiron Corp. v. Genentech, Inc.
We represented Genentech, Inc. in a high-stakes patent trial. The plaintiff claimed our client's recombinantly engineered, “humanized” therapeutic for breast cancer infringed on the plaintiff's patent. We obtained a jury…
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Plaintiff v. Semiconductor Company
On behalf of a Taiwan-based semiconductor company, we brought a declaratory judgment action in the Northern District of California to resolve patent claims that purported to target computer-mouse products relying…
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Network Appliance v. BlueArc Corporation
We served as lead counsel for network storage newcomer BlueArc Corporation. We obtained summary judgment for BlueArc in this multi-patent case in the Northern District of California. The plaintiff, industry…
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Broadcom Corporation v. SiRF Technology and CSR
We served as trial counsel for Broadcom, one of the world’s leading semiconductor companies, against SiRF, a GPS chip manufacturer, and its parent CSR. Broadcom asserted multiple patents covering graphics,…
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evYsio Medical Devices v. Advanced Cardiovascular Systems
We represented evYsio Medical Devices in asserting patents for its cardiac stent technology. Prior to jury selection, the case became part of a global settlement between Medtronic and Abbott. Our…
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Caritas Technologies v. Comcast Cable Communications, LLC
The U.S. Court of Appeals for the Federal Circuit upheld our successful defense of a $2.2 billion patent infringement claim against Comcast Cable Communications, LLC. The plaintiff had asserted that…
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Plaintiffs v. Telecommunications Company
In a patent infringement suit concerning video-conferencing systems, our client's competitor and its patent-holding arm sought an injunction and demanded damages against all products and services in our client’s core…
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Harris Corporation v. DRAM Technology Users
On behalf of the Harris Corporation, we brought a series of patent-infringement actions to enforce a portfolio of patents covering various fundamental features of DRAM technology. The defendants included Hyundai,…
News & Events
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1st Circ. Skeptical Of Legal Basis For IRS-ICE Data Sharing
A First Circuit panel appeared skeptical and questioned the Trump administration’s legal basis for obtaining taxpayer addresses from the IRS for immigration enforcement, Law360 reports. The government is appeal…
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Immigrant and Taxpayer Advocates Demand Full Answers on Federal Agencies’ Unlawful Transfers of Protected Data
Taxpayer and immigrants’ rights advocates filed new motions in their lawsuit Community Economic Development Center of Southeastern Massachusetts et al. v. Bessent et al., which challenges the federal agencies’ …
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Best Lawyers Names 2027 Top Attorneys and Ones to Watch
The Best Lawyers in America has recognized 20 Keker attorneys in its 2027 edition of The Best Lawyers in America® and Best Lawyers: Ones to Watch® in America. Fourteen Keker lawyers were selected as Best L…
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IRS Barred From Sharing Tax Data With ICE
In a win for immigrants’ rights advocates, a federal judge in Massachusetts blocked the IRS and Treasury Department from sharing taxpayer data and address information with the Department of Homeland Security an…
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Keker Joins ABA in Celebrating Pro Bono Work
At Keker, Van Nest & Peters, pro bono work is an integral part of our firm. From challenging illegal mass deportation tactics, to pushing for criminal justice reform, to fighting for the rights of individuals a…
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Taxpayer and Immigrant Advocates Sue ICE, IRS, and Social Security Administration to Stop Information Sharing
Taxpayer and immigrants’ rights advocates today filed a lawsuit asking for a block of the receipt and use of tax-related data by Immigration and Customs Enforcement (ICE) from both the Internal Revenue Service …
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Best Lawyers Issues 2026 Edition of Top Attorneys; Elliot Peters Honored as Lawyer of the Year
Best Lawyers Issues 2026 Edition of Top Attorneys; Elliot Peters Honored as Lawyer of the Year
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The Biggest Patent Rulings of 2025: A Midyear Report
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…
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Keker, Van Nest & Peters Named a Law360 “Legal Lion” for Securing Full Federal Circuit Reversal
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 EcoFa…
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Law360 Trials Group Of The Year: Keker, Van Nest & Peters
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.
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KVP Attorneys Recognized in 2025 Editions of The Best Lawyers in America® and the Best Lawyers: Ones to Watch® in America.
The 2025 edition of The Best Lawyers in America® and the Best Lawyers: Ones to Watch® in America featured 25 KVP attorneys.
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Am Law Litigation Daily: Another Dose of Litigator of the Week Runners-Up and Shout Outs
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 u…
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Federal judge denies LIV golfers bid for PGA Tour postseason
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.
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Leo Lam Reveals Significance of High Court’s Induced Infringement Ruling
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.
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Keker & Van Nest Wins Jury Verdict for SanDisk In Patent Dispute With Round Rock
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 c…
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Keker & Van Nest Wins Summary Judgment for TSMC in Patent Dispute with Ziptronix
Ziptronix had asserted nine patents and more than 500 claims over TSMC’s manufacturing of semiconductors.
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Keker & Van Nest Helps Comcast Shake Contract Claims in Networking IP Row
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 counte…
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On Behalf of HTC, Keker & Van Nest Secures Deal To End Smartphone Patent Suits
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.
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Federal Circuit Affirms Win for Comcast
Keker & Van Nest wins a complete victory in patent infringement case.
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23 Keker & Van Nest Attorneys Named “Best Lawyers”
The firm receives top rankings for bet-the-company, intellectual property, criminal defense, securities, commercial, legal malpractice, and appellate litigation.
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17 Partners Selected for 2012 Best Lawyers in America
Keker & Van Nest partners were recognized in more than ten categories, including bet-the-company litigation, criminal defense, and intellectual property litigation.
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