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Trademark and Copyright Litigation

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  • Wide-Ranging Trademark Experience

    Wilson Sonsini has handled cases covering every type of trademark claim and argument, including trademark dilution, trademark licensing, trade names, trade dress, corporate identity, online advertising, search terms, domain name infringement, and counterfeit goods.

  • International and Regulatory Expertise

    Wilson Sonsini's attorneys represent clients in trademark opposition and cancellation proceedings in other countries, as well as before the FTC and other regulatory bodies when disputes have involved advertising and consumer protection issues.

  • High-Profile Copyright Matters

    Wilson Sonsini has been involved in landmark copyright disputes, representing clients with both developing and established brands in complex matters intertwined with issues of first impression and novel legal arguments.

  • Recognized Trademark and Copyright Practitioners

    Wilson Sonsini's trademark and copyright attorneys have been recognized among the leaders in their field by Chambers USA, WTR 1000—The World's Leading Trademark Professionals, Managing IP, The American Lawyer, and the San Francisco Daily Journal.

Wilson Sonsini's IP Litigation practice has grown into one of the firm's most vibrant and visible areas, due in large part to our representation of innovative, leading technology and life sciences companies in high-profile disputes. Another driver of our IP Litigation practice is our proven record of securing impressive, game-changing results on behalf of our clients. While the firm's Patent Litigation practice has consistently led the way, Wilson Sonsini has also demonstrated clear strength in significant trademark and copyright disputes.

The success of many companies depends on brand strength and vitality. Accordingly, our attorneys know the importance of devising comprehensive, sophisticated IP litigation strategies that protect key assets, including trademarks and copyrights. 

Trademark Litigation

Our trademark litigators have engaged in closely watched disputes concerning trademark, trade name, trade dress, domain name, right of publicity/privacy, and unfair competition issues. The firm has obtained appellate trademark victories on behalf of GoDaddy (the Ninth Circuit affirmed a grant of summary judgment) and JRA Trademark Co., the master licensee for the U.S. Polo Association (here the Second Circuit defined the standard to be applied when considering a contempt motion in a trademark matter).

The firm's trademark litigators frequently represent clients in cases of first impression. While those disputes earn headlines and garner the attention of practitioners in the IP bar, our technology industry clients are often focused on how trademark issues impact their respective sectors.

Wilson Sonsini has been involved in cases that cover virtually every type of claim and argument, including:

  • Trademark dilution
  • Trademark licensing
  • Trade names
  • Trade dress and labeling
  • Corporate identity (including brand names and taglines)
  • Online advertising
  • Search terms and keywords
  • Domain name infringement and cybersquatting
  • Counterfeit goods

When necessary, our trademark litigators collaborate effectively with our trademark prosecution attorneys, as well as other transactional IP attorneys in the firm. As a result, we've helped clients pursue comprehensive IP strategies that require experience ranging from asset development to asset protection. In short, Wilson Sonsini offers clients integrated, global trademark enforcement and protection, as well as sophisticated trademark portfolio strategies.

In addition to representing clients in trademark disputes litigated in U.S. courts, we represent clients in connection with trademark opposition and cancellation proceedings in other countries. We also have represented clients before the Federal Trade Commission and other regulatory bodies when trademark disputes have involved advertising and consumer protection issues, including false advertising claims and unfair competition cases between competitors.

Copyright Litigation

Our IP litigators have been involved in high-profile disputes concerning copyright law, representing clients with both developing and established brands in complex matters intertwined with issues of first impression and novel legal arguments.

For example, Wilson Sonsini has represented clients in several landmark copyright cases involving the Digital Millennium Copyright Act (DMCA), including our representation of Google in the company's epic, $1 billion copyright battle involving YouTube that ended in March 2014. In the course of the landmark case, YouTube obtained important rulings interpreting the DMCA.

Our copyright case list also includes key legal disputes that involved classic copyright controversies, including:

  • Fair use doctrine
  • Derivative works
  • Statutory exemptions
  • Public performance rights
  • Online copyrights
  • Domain name infringement and cybersquatting
  • Free speech-related controversies
  • Published content
  • Content licensing matters

Generally, our copyright litigation clients are adverse to music publishers, record labels, performing rights organizations (PROs), movie studios, and book publishers, not only in litigation but also in statutory-license, rate-setting proceedings and royalty audits.

Overview

Wilson Sonsini's IP Litigation practice has grown into one of the firm's most vibrant and visible areas, due in large part to our representation of innovative, leading technology and life sciences companies in high-profile disputes. Another driver of our IP Litigation practice is our proven record of securing impressive, game-changing results on behalf of our clients. While the firm's Patent Litigation practice has consistently led the way, Wilson Sonsini has also demonstrated clear strength in significant trademark and copyright disputes.

The success of many companies depends on brand strength and vitality. Accordingly, our attorneys know the importance of devising comprehensive, sophisticated IP litigation strategies that protect key assets, including trademarks and copyrights. 

Trademark Litigation

Our trademark litigators have engaged in closely watched disputes concerning trademark, trade name, trade dress, domain name, right of publicity/privacy, and unfair competition issues. The firm has obtained appellate trademark victories on behalf of GoDaddy (the Ninth Circuit affirmed a grant of summary judgment) and JRA Trademark Co., the master licensee for the U.S. Polo Association (here the Second Circuit defined the standard to be applied when considering a contempt motion in a trademark matter).

The firm's trademark litigators frequently represent clients in cases of first impression. While those disputes earn headlines and garner the attention of practitioners in the IP bar, our technology industry clients are often focused on how trademark issues impact their respective sectors.

Wilson Sonsini has been involved in cases that cover virtually every type of claim and argument, including:

  • Trademark dilution
  • Trademark licensing
  • Trade names
  • Trade dress and labeling
  • Corporate identity (including brand names and taglines)
  • Online advertising
  • Search terms and keywords
  • Domain name infringement and cybersquatting
  • Counterfeit goods

When necessary, our trademark litigators collaborate effectively with our trademark prosecution attorneys, as well as other transactional IP attorneys in the firm. As a result, we've helped clients pursue comprehensive IP strategies that require experience ranging from asset development to asset protection. In short, Wilson Sonsini offers clients integrated, global trademark enforcement and protection, as well as sophisticated trademark portfolio strategies.

In addition to representing clients in trademark disputes litigated in U.S. courts, we represent clients in connection with trademark opposition and cancellation proceedings in other countries. We also have represented clients before the Federal Trade Commission and other regulatory bodies when trademark disputes have involved advertising and consumer protection issues, including false advertising claims and unfair competition cases between competitors.

Copyright Litigation

Our IP litigators have been involved in high-profile disputes concerning copyright law, representing clients with both developing and established brands in complex matters intertwined with issues of first impression and novel legal arguments.

For example, Wilson Sonsini has represented clients in several landmark copyright cases involving the Digital Millennium Copyright Act (DMCA), including our representation of Google in the company's epic, $1 billion copyright battle involving YouTube that ended in March 2014. In the course of the landmark case, YouTube obtained important rulings interpreting the DMCA.

Our copyright case list also includes key legal disputes that involved classic copyright controversies, including:

  • Fair use doctrine
  • Derivative works
  • Statutory exemptions
  • Public performance rights
  • Online copyrights
  • Domain name infringement and cybersquatting
  • Free speech-related controversies
  • Published content
  • Content licensing matters

Generally, our copyright litigation clients are adverse to music publishers, record labels, performing rights organizations (PROs), movie studios, and book publishers, not only in litigation but also in statutory-license, rate-setting proceedings and royalty audits.

News Articles
2026 Chambers Global Guide Recognizes Wilson Sonsini, Attorneys
On February 12, 2026, Chambers and Partners recognized Wilson Sonsini practices and attorneys among the top global lawyers, law firms, and in-house counsel in over 200 jurisdictions in the 2026 edition of its Chambers Global guide. The listings were compiled based on confidential interviews with attorneys and law firm clients to assess firms, practice groups, and individual attorneys based on their technical legal ability, professional conduct, client service, commercial astuteness, diligence, commitment, and other valued qualities.
Newsletters
Litigation Trends to Watch in 2026
Entering 2026, Wilson Sonsini litigators see a landscape defined by AI driven disputes, continued tightening of patent review standards, renewed securities and governance litigation, stronger consumer and influencer enforcement, and escalating Telephone Consumer Protection Act (TCPA) exposure—trends that require companies to align legal strategy with technical and operational controls.
Bylined Articles
Wilson Sonsini Partner Lisa Zang Serves as Contributing Editor to Sedona Conference Commentary on Clean Rooms
Wilson Sonsini partner Lisa Zang served as a contributing editor to the Sedona Conference’s August 2025 Commentary on the Use of Clean Rooms.
News Articles
Wilson Sonsini’s Trademark Practice, Attorneys Recognized in 2025 World Trademark Review 1000
Wilson Sonsini Goodrich & Rosati’s trademark and advertising practice has been ranked in the 2025 edition of World Trademark Review’s WTR 1000, an annual guide that highlights the top trademark professionals in key jurisdictions worldwide. Wilson Sonsini is recognized as a leading firm in Washington.
Alerts
Litigation Trends to Watch in 2025
As we welcome 2025, Wilson Sonsini litigators shed light on the emerging trends and key issues they see shaping the legal landscape, from AI regulation to evolving trade secret laws and increasing scrutiny on corporate disclosures.
Alerts
Copyright Battle in 2K Games Lawsuit Comes to a Close
The case of Hayden v. 2K Games, Inc. involving a tattoo artist’s copyright battle against the gaming giant, 2K Games, was decided earlier this month.1 In 2017, tattoo artist James Hayden filed the lawsuit over 2K Games’ realistic portrayals of his tattoo designs on its popular basketball player avatars.2 Wilson Sonsini previously reported on this lawsuit here and here.
View All
Insights
News Articles
2026 Chambers Global Guide Recognizes Wilson Sonsini, Attorneys
On February 12, 2026, Chambers and Partners recognized Wilson Sonsini practices and attorneys among the top global lawyers, law firms, and in-house counsel in over 200 jurisdictions in the 2026 edition of its Chambers Global guide. The listings were compiled based on confidential interviews with attorneys and law firm clients to assess firms, practice groups, and individual attorneys based on their technical legal ability, professional conduct, client service, commercial astuteness, diligence, commitment, and other valued qualities.
Newsletters
Litigation Trends to Watch in 2026
Entering 2026, Wilson Sonsini litigators see a landscape defined by AI driven disputes, continued tightening of patent review standards, renewed securities and governance litigation, stronger consumer and influencer enforcement, and escalating Telephone Consumer Protection Act (TCPA) exposure—trends that require companies to align legal strategy with technical and operational controls.
Bylined Articles
Wilson Sonsini Partner Lisa Zang Serves as Contributing Editor to Sedona Conference Commentary on Clean Rooms
Wilson Sonsini partner Lisa Zang served as a contributing editor to the Sedona Conference’s August 2025 Commentary on the Use of Clean Rooms.
News Articles
Wilson Sonsini’s Trademark Practice, Attorneys Recognized in 2025 World Trademark Review 1000
Wilson Sonsini Goodrich & Rosati’s trademark and advertising practice has been ranked in the 2025 edition of World Trademark Review’s WTR 1000, an annual guide that highlights the top trademark professionals in key jurisdictions worldwide. Wilson Sonsini is recognized as a leading firm in Washington.
Alerts
Litigation Trends to Watch in 2025
As we welcome 2025, Wilson Sonsini litigators shed light on the emerging trends and key issues they see shaping the legal landscape, from AI regulation to evolving trade secret laws and increasing scrutiny on corporate disclosures.
Alerts
Copyright Battle in 2K Games Lawsuit Comes to a Close
The case of Hayden v. 2K Games, Inc. involving a tattoo artist’s copyright battle against the gaming giant, 2K Games, was decided earlier this month.1 In 2017, tattoo artist James Hayden filed the lawsuit over 2K Games’ realistic portrayals of his tattoo designs on its popular basketball player avatars.2 Wilson Sonsini previously reported on this lawsuit here and here.
View All
Speaking Engagements
USC Gould School of Law 2026 Intellectual Property Institute
Wilson Sonsini is proud to sponsor the USC Gould School of Law 2026 Intellectual Property Institute. Join other IP professionals for a gathering of national speakers and a sophisticated discussion of emerging issues and best practices in copyright, patent, trademark, trade secret and related fields. The Intellectual Property Institute has forged a reputation for gathering national speakers to analyze sophisticated topics and provide practical takeaways. Focusing on copyright, patent and trademark law, the Institute takes place over the course of two days at The Fairmont Miramar Hotel & Bungalows in Santa Monica and features morning plenary sessions, a keynote address, and tracked sessions. Visit the event website to learn more.
Affiliated Programs
28th Annual Entertainment Law Initiative Luncheon and Scholarship Presentation
Wilson Sonsini is proud to sponsor the 28th Annual Entertainment Law Initiative (ELI) GRAMMY Week Luncheon and Scholarship Presentation on January 30, 2026, at the Beverly Wilshire Hotel. This event brings together professionals and creators in the music industry to celebrate, gain insights from industry leaders, and recognize the contributions of music business pioneers. The program will feature the presentation of the ELI Service Award, an accolade given to a legal professional or entity for their dedication to improving the music community. This year's award will honor Paul Robinson, Warner Music Group's Executive Vice President & General Counsel. For more details, please visit the event website.
Affiliated Programs
2025 ChIPs Global Summit
Wilson Sonsini is proud to sponsor the 2025 ChIPs Global Summit in Washington, D.C. This signature event for women in tech law and innovation will provide guests insights on the latest trends in tech law and policy as well as the opportunity to network with colleagues, all while supporting industry inclusion.
Affiliated Programs
Association of Corporate Counsel San Francisco Bay Area CLE — Marketing Meets Law: Your Guide to Compliance and Creativity (Palo Alto)
Wilson Sonsini is proud to sponsor a half-day CLE program for the Association of Corporate Counsel’s San Francisco Bay Area Chapter titled “Marketing Meets Law: Your Guide to Compliance and Creativity.”
Speaking Engagements
Ad Idem Network CLE: IP Protection for Gen AI Inventions
Wilson Sonsini partner Jordan Jaffe will serve as a panelist for a CLE Webinar titled “IP Protection for GenAI Inventions,” hosted by Ad Idem Network. The panel will discuss the evolving rules, guidance, and court decisions regarding the patentability and copyrightability of inventions involving GenAI outputs, who owns those rights, and how to protect the business while remaining competitive. The discussion will also cover practical tips for how to advise the business on this rapidly evolving issue in today’s legal landscape.
Speaking Engagements
Association of Corporate Counsel San Francisco Bay Area CLE: How to Counsel Your Marketing Department (San Francisco)
In-house counsel are invited to join Wilson Sonsini attorneys Alyssa Worsham and Christine Au-Yeung for an ACC San Francisco Bay Area CLE program titled “Marketing 101: How to Counsel Your Marketing Department” in San Francisco on Wednesday, October 30. Alyssa and Christine will be joined by Stephanie Hall, Director of Trademark & Brand at Lyft, and will discuss how to be an effective legal voice to your marketing and brand teams as they launch innovative products on a global scale, embrace opportunities in social media, and leverage influencers and endorsements in their marketing initiatives. The program will also cover new FTC rules on using reviews and testimonials in marketing and ways to promote brands through sweepstakes and contests.  
View All
Events
Speaking Engagements
USC Gould School of Law 2026 Intellectual Property Institute
Wilson Sonsini is proud to sponsor the USC Gould School of Law 2026 Intellectual Property Institute. Join other IP professionals for a gathering of national speakers and a sophisticated discussion of emerging issues and best practices in copyright, patent, trademark, trade secret and related fields. The Intellectual Property Institute has forged a reputation for gathering national speakers to analyze sophisticated topics and provide practical takeaways. Focusing on copyright, patent and trademark law, the Institute takes place over the course of two days at The Fairmont Miramar Hotel & Bungalows in Santa Monica and features morning plenary sessions, a keynote address, and tracked sessions. Visit the event website to learn more.
Affiliated Programs
28th Annual Entertainment Law Initiative Luncheon and Scholarship Presentation
Wilson Sonsini is proud to sponsor the 28th Annual Entertainment Law Initiative (ELI) GRAMMY Week Luncheon and Scholarship Presentation on January 30, 2026, at the Beverly Wilshire Hotel. This event brings together professionals and creators in the music industry to celebrate, gain insights from industry leaders, and recognize the contributions of music business pioneers. The program will feature the presentation of the ELI Service Award, an accolade given to a legal professional or entity for their dedication to improving the music community. This year's award will honor Paul Robinson, Warner Music Group's Executive Vice President & General Counsel. For more details, please visit the event website.
Affiliated Programs
2025 ChIPs Global Summit
Wilson Sonsini is proud to sponsor the 2025 ChIPs Global Summit in Washington, D.C. This signature event for women in tech law and innovation will provide guests insights on the latest trends in tech law and policy as well as the opportunity to network with colleagues, all while supporting industry inclusion.
Affiliated Programs
Association of Corporate Counsel San Francisco Bay Area CLE — Marketing Meets Law: Your Guide to Compliance and Creativity (Palo Alto)
Wilson Sonsini is proud to sponsor a half-day CLE program for the Association of Corporate Counsel’s San Francisco Bay Area Chapter titled “Marketing Meets Law: Your Guide to Compliance and Creativity.”
Speaking Engagements
Ad Idem Network CLE: IP Protection for Gen AI Inventions
Wilson Sonsini partner Jordan Jaffe will serve as a panelist for a CLE Webinar titled “IP Protection for GenAI Inventions,” hosted by Ad Idem Network. The panel will discuss the evolving rules, guidance, and court decisions regarding the patentability and copyrightability of inventions involving GenAI outputs, who owns those rights, and how to protect the business while remaining competitive. The discussion will also cover practical tips for how to advise the business on this rapidly evolving issue in today’s legal landscape.
Speaking Engagements
Association of Corporate Counsel San Francisco Bay Area CLE: How to Counsel Your Marketing Department (San Francisco)
In-house counsel are invited to join Wilson Sonsini attorneys Alyssa Worsham and Christine Au-Yeung for an ACC San Francisco Bay Area CLE program titled “Marketing 101: How to Counsel Your Marketing Department” in San Francisco on Wednesday, October 30. Alyssa and Christine will be joined by Stephanie Hall, Director of Trademark & Brand at Lyft, and will discuss how to be an effective legal voice to your marketing and brand teams as they launch innovative products on a global scale, embrace opportunities in social media, and leverage influencers and endorsements in their marketing initiatives. The program will also cover new FTC rules on using reviews and testimonials in marketing and ways to promote brands through sweepstakes and contests.  
View All
Colleen Bal
Partner
San Francisco
Colleen is a nationally recognized trial lawyer with a proven track record of handling difficult and high-profile cases for leading technology, life sciences, and financial companies.
  • Litigation
View Profile
Aaron D. Hendelman
Partner
Seattle
Aaron heads the firm's trademark and advertising practice, focusing on the areas of trademark, advertising, unfair competition, copyright, retail, rights of publicity, social media, and consumer law.
  • Trademark and Advertising
View Profile
Jordan R. Jaffe
Partner
San Francisco
Jordan R. Jaffe is a partner in the San Francisco office of Wilson Sonsini Goodrich & Rosati, where his practice focuses on high-stakes intellectual property disputes, including patent, trade secret, copyright and trademark litigation.  Jordan has expertise in the emerging technologies sector, especially artificial intelligence and autonomous vehicles, where Jordan was identified in 2022 as one of the top eight lawyers advising AI companies by Business Insider.  Jordan’s recent experience includes representing Waymo against Uber regarding self-driving technology, representing Google against Sonos regarding alleged smart speaker technology, and representing multiple cybersecurity companies in trade secret litigation. Leveraging his background in computer science, Jordan regularly leads teams in litigation concerning a variety of complex technologies from prelitigation through trial. 
  • Litigation
View Profile
Victor Jih
Partner
Century City
Victor has extensive experience as a commercial litigator in a wide range of complex business disputes at both the trial and appellate levels.
  • Litigation
View Profile
David H. Kramer
Partner
Palo Alto
David represents companies facing challenging disputes involving novel issues of law. 
  • Litigation
View Profile
Jess Krannich
Partner
Salt Lake City
Jess M. Krannich is a litigation partner in the Salt Lake City office of Wilson Sonsini Goodrich & Rosati. Jess is a seasoned trial lawyer who leads significant intellectual property, unfair competition, patent, and general commercial matters for a wide range of clients in the technology, life sciences, medical device, consumer products, and financial services sectors. Many of his clients are major industry leaders in the Rocky Mountain West.
  • Litigation
View Profile
Maura L. Rees
Partner
Palo Alto
Maura is an experienced litigator who represents clients in complex commercial litigation and IP-related disputes, including copyright, trademark, patent, and antitrust matters, as well as consumer class actions.
  • Litigation
View Profile
Thomas R. Wakefield
Partner
San Francisco
Tom Wakefield is a partner with the firm’s internet strategy and litigation group. Based in San Francisco, Tom focuses his practice on emerging issues in internet law, with deep expertise in data privacy, copyright law, and class-action practice. His clients include Google, TikTok, Pinterest, YouTube, Roblox, and Substack. Tom has litigated claims that threatened his clients’ core businesses, including cases that tested the boundaries of the Digital Millennium Copyright Act (DMCA) and that pursued novel theories of liability under an array of privacy laws, including the Electronic Communications Privacy Act (ECPA) and the Children’s Online Privacy Protection Act (COPPA). In addition to litigating, Tom serves as a trusted advisor to innovative companies on privacy, copyright, artificial intelligence, web scraping, and the terms of service that govern technology platforms, including issues around online contracting, arbitration clauses, and mass-arbitration defenses.
  • Litigation
View Profile
Lisa D. Zang
Partner
Century City
Lisa D. Zang is a partner at Wilson Sonsini Goodrich & Rosati, where she specializes in internet strategy and IP litigation.
  • Litigation
View Profile
Jessica L. Margolis
Partner Emeritus
Jessica Margolis retired as a partner at Wilson Sonsini Goodrich & Rosati in 2025. Jessica came to the firm in 2005 as one of the first attorneys resident in the New York Office and was elevated to partner in 2010. As a member of the Complex Litigation group, Jessica specialized in general commercial, intellectual property, and other complex litigation. Jessica has experience in all stages of the litigation process, from inception of an action through discovery, motion practice, trial, and appeal. She has significant experience litigating in federal and state courts, as well as representing clients in arbitration.
  • Litigation
View Profile
View All
People
Colleen Bal
Partner
San Francisco
Colleen is a nationally recognized trial lawyer with a proven track record of handling difficult and high-profile cases for leading technology, life sciences, and financial companies.
  • Litigation
View Profile
Aaron D. Hendelman
Partner
Seattle
Aaron heads the firm's trademark and advertising practice, focusing on the areas of trademark, advertising, unfair competition, copyright, retail, rights of publicity, social media, and consumer law.
  • Trademark and Advertising
View Profile
Jordan R. Jaffe
Partner
San Francisco
Jordan R. Jaffe is a partner in the San Francisco office of Wilson Sonsini Goodrich & Rosati, where his practice focuses on high-stakes intellectual property disputes, including patent, trade secret, copyright and trademark litigation.  Jordan has expertise in the emerging technologies sector, especially artificial intelligence and autonomous vehicles, where Jordan was identified in 2022 as one of the top eight lawyers advising AI companies by Business Insider.  Jordan’s recent experience includes representing Waymo against Uber regarding self-driving technology, representing Google against Sonos regarding alleged smart speaker technology, and representing multiple cybersecurity companies in trade secret litigation. Leveraging his background in computer science, Jordan regularly leads teams in litigation concerning a variety of complex technologies from prelitigation through trial. 
  • Litigation
View Profile
Victor Jih
Partner
Century City
Victor has extensive experience as a commercial litigator in a wide range of complex business disputes at both the trial and appellate levels.
  • Litigation
View Profile
David H. Kramer
Partner
Palo Alto
David represents companies facing challenging disputes involving novel issues of law. 
  • Litigation
View Profile
Jess Krannich
Partner
Salt Lake City
Jess M. Krannich is a litigation partner in the Salt Lake City office of Wilson Sonsini Goodrich & Rosati. Jess is a seasoned trial lawyer who leads significant intellectual property, unfair competition, patent, and general commercial matters for a wide range of clients in the technology, life sciences, medical device, consumer products, and financial services sectors. Many of his clients are major industry leaders in the Rocky Mountain West.
  • Litigation
View Profile
Maura L. Rees
Partner
Palo Alto
Maura is an experienced litigator who represents clients in complex commercial litigation and IP-related disputes, including copyright, trademark, patent, and antitrust matters, as well as consumer class actions.
  • Litigation
View Profile
Thomas R. Wakefield
Partner
San Francisco
Tom Wakefield is a partner with the firm’s internet strategy and litigation group. Based in San Francisco, Tom focuses his practice on emerging issues in internet law, with deep expertise in data privacy, copyright law, and class-action practice. His clients include Google, TikTok, Pinterest, YouTube, Roblox, and Substack. Tom has litigated claims that threatened his clients’ core businesses, including cases that tested the boundaries of the Digital Millennium Copyright Act (DMCA) and that pursued novel theories of liability under an array of privacy laws, including the Electronic Communications Privacy Act (ECPA) and the Children’s Online Privacy Protection Act (COPPA). In addition to litigating, Tom serves as a trusted advisor to innovative companies on privacy, copyright, artificial intelligence, web scraping, and the terms of service that govern technology platforms, including issues around online contracting, arbitration clauses, and mass-arbitration defenses.
  • Litigation
View Profile
Lisa D. Zang
Partner
Century City
Lisa D. Zang is a partner at Wilson Sonsini Goodrich & Rosati, where she specializes in internet strategy and IP litigation.
  • Litigation
View Profile
Jessica L. Margolis
Partner Emeritus
Jessica Margolis retired as a partner at Wilson Sonsini Goodrich & Rosati in 2025. Jessica came to the firm in 2005 as one of the first attorneys resident in the New York Office and was elevated to partner in 2010. As a member of the Complex Litigation group, Jessica specialized in general commercial, intellectual property, and other complex litigation. Jessica has experience in all stages of the litigation process, from inception of an action through discovery, motion practice, trial, and appeal. She has significant experience litigating in federal and state courts, as well as representing clients in arbitration.
  • Litigation
View Profile
View All
Related Practices
  • Commercial Litigation
  • Intellectual Property
  • Internet Strategy and Litigation
  • Patent Litigation
  • Trademark and Advertising
  • Trial
Recent Insights
News Articles
2026 Chambers Global Guide Recognizes Wilson Sonsini, Attorneys
On February 12, 2026, Chambers and Partners recognized Wilson Sonsini practices and attorneys among the top global lawyers, law firms, and in-house counsel in over 200 jurisdictions in the 2026 edition of its Chambers Global guide. The listings were compiled based on confidential interviews with attorneys and law firm clients to assess firms, practice groups, and individual attorneys based on their technical legal ability, professional conduct, client service, commercial astuteness, diligence, commitment, and other valued qualities.
Learn More
Newsletters
Litigation Trends to Watch in 2026
Entering 2026, Wilson Sonsini litigators see a landscape defined by AI driven disputes, continued tightening of patent review standards, renewed securities and governance litigation, stronger consumer and influencer enforcement, and escalating Telephone Consumer Protection Act (TCPA) exposure—trends that require companies to align legal strategy with technical and operational controls.
Learn More
View All
Recent Events
Speaking Engagements
USC Gould School of Law 2026 Intellectual Property Institute
Wilson Sonsini is proud to sponsor the USC Gould School of Law 2026 Intellectual Property Institute. Join other IP professionals for a gathering of national speakers and a sophisticated discussion of emerging issues and best practices in copyright, patent, trademark, trade secret and related fields. The Intellectual Property Institute has forged a reputation for gathering national speakers to analyze sophisticated topics and provide practical takeaways. Focusing on copyright, patent and trademark law, the Institute takes place over the course of two days at The Fairmont Miramar Hotel & Bungalows in Santa Monica and features morning plenary sessions, a keynote address, and tracked sessions. Visit the event website to learn more.
Learn More
Affiliated Programs
28th Annual Entertainment Law Initiative Luncheon and Scholarship Presentation
Wilson Sonsini is proud to sponsor the 28th Annual Entertainment Law Initiative (ELI) GRAMMY Week Luncheon and Scholarship Presentation on January 30, 2026, at the Beverly Wilshire Hotel. This event brings together professionals and creators in the music industry to celebrate, gain insights from industry leaders, and recognize the contributions of music business pioneers. The program will feature the presentation of the ELI Service Award, an accolade given to a legal professional or entity for their dedication to improving the music community. This year's award will honor Paul Robinson, Warner Music Group's Executive Vice President & General Counsel. For more details, please visit the event website.
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