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Christine K. Au-Yeung
Partner
San Francisco
Christine Au-Yeung is a partner in the San Francisco and Palo Alto offices of Wilson Sonsini Goodrich & Rosati, where she specializes in trademark, copyright, and advertising law. She counsels clients on all aspects of brand protection in the U.S. and throughout the world, including clearance and selection of trademarks, prosecution of trademark applications, licensing, and the resolution of trademark infringement and domain name disputes. She also advises clients on advertising issues, including TCPA compliance related to marketing calls and texts as well as strategies on promotions such as sweepstakes and contests.
  • Trademark and Advertising
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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
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Maneesha Mithal
Partner
Washington, D.C.
Maneesha Mithal is a partner in the Washington, D.C., office of Wilson Sonsini and co-chair of the firm’s data, privacy, and cybersecurity practice. Maneesha advises clients on privacy, cybersecurity, and consumer protection matters and represents companies in regulatory investigations. She is also one of the founding members of Wilson Sonsini’s AI group.
  • Data, Privacy, and Cybersecurity
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Christopher N. Olsen
Partner
Washington, D.C.
Christopher advises clients on all aspects of privacy and cybersecurity matters and represents companies under investigation by the FTC and state attorneys general.
  • Data, Privacy, and Cybersecurity
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Tracy Shapiro
Partner
San Francisco
Tracy Shapiro is a partner in Wilson Sonsini’s San Francisco office, where she advises on privacy, data security, artificial intelligence, and advertising issues, and defends clients in investigations and enforcement actions brought by the Federal Trade Commission (FTC), state attorneys general, and Congress.
  • Data, Privacy, and Cybersecurity
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Lauren Gallo White
Partner
San Francisco
Lauren represents internet and digital media companies in complex, high-stakes litigation related to online speech, privacy, and intellectual property.
  • Litigation
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Brian M. Willen
Partner
New York
Brian represents companies facing challenging disputes involving novel issues of law. 
  • Litigation
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Alyssa M. Worsham
Partner
Seattle
Alyssa Worsham is a member of the firm’s trademark and advertising team, which has been recognized in Chambers and Partners’ USA and Global guides, as well as World Trademark Review’s WTR 1000. She focuses on global strategic advice, litigation strategy, and transactional guidance for clients’ trademarks, branding, and advertising in marketplaces where commercial and geographic lines are increasingly blurring. She helps clients assess the risk in selecting new business and product names, and works with them to build, exploit, and protect these names creatively and strategically. Alyssa advises on trademark disputes, domain name disputes, contests and sweepstakes, advertising review, right of publicity, social media issues, Telephone Consumer Protection Act (TCPA) compliance (i.e., the rules surrounding marketing texts and calls), FTC compliance and investigations, copyright, IP diligence, and associated commercial contracts. She works with software companies, biotech start-ups, cosmetics companies, fashion companies, life sciences and digital health companies, agro-tech companies, consumer products, non-profits, and game developers, among others. She advises founders, CEOs, GCs, IP specialists, and chief marketing officers on the critical issues surrounding brand creation, protection, and strategy.
  • Trademark and Advertising
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Eva F. Yin
Partner
Seattle
Eva Yin, Ph.D., M.P.H., is a partner in Wilson Sonsini Goodrich & Rosati’s FDA regulatory, healthcare, and consumer products practice. Her practice includes conducting FDA and healthcare regulatory due diligence for corporate transactions; providing legal counsel to manufacturers regarding FDA approval/clearance for various products—including medical devices, mobile apps, and drugs, FDA compliance, regulation of promotional materials and labeling, and manufacturer compliance under federal and state healthcare laws, e.g., the federal Anti-Kickback Statute (AKS), False Claims Act (FCA), Sunshine Act, state licensing laws, corporate practice of medicine, etc.; reviewing contracts and compliance policies for manufacturers; and providing legal analysis and risk assessment of business models and fee arrangements involving patient assistance programs, healthcare professionals, or hospitals/clinics under federal and state healthcare laws and regulations.
  • Regulatory
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Lydia B. Parnes
Partner Emeritus
Lydia co-leads Wilson Sonsini's global privacy and cybersecurity practice and she advises clients on privacy and cybersecurity matters.
  • Data, Privacy, and Cybersecurity
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John L. Slafsky
Partner Emeritus
John Slafsky retired as partner at Wilson Sonsini in 2025.
  • Trademark and Advertising
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Brandon P. Leahy
Senior Counsel
San Francisco
Brandon Leahy is senior counsel in the San Francisco office of Wilson Sonsini Goodrich & Rosati, where he practices trademark, copyright, and advertising law. He advises clients on all aspects of brand protection and enforcement in the U.S. and internationally, including clearance and selection of trademarks, prosecution of trademark applications, and licensing and transactions. He also represents clients in federal court litigation, in disputes before the Trademark Trial and Appeal Board, and in arbitration proceedings involving domain names.
  • Trademark and Advertising
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Camila Chabayta
Associate
San Francisco
Camila Chabayta is an associate in the San Francisco office of Wilson Sonsini Goodrich & Rosati, where she focuses on trademark and advertising law. She counsels clients on a variety of brand protection and enforcement matters, including trademark clearance and selection, trademark prosecution, domain name disputes, and advertising issues.
  • Trademark and Advertising
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Chloe Delehanty
Associate
San Diego
Chloe Delehanty is an associate in the trademark and advertising group in the San Diego office of Wilson Sonsini Goodrich & Rosati.
  • Trademark and Advertising
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Emily (Emma) Elder
Associate
Seattle
Emma Elder is an associate in the Seattle office of Wilson Sonsini Goodrich & Rosati, where she focuses on trademark and advertising law. Emma advises clients on brand protection and enforcement, trademark clearance and selection, domain name disputes, copyright protection and enforcement, and advertising matters.
  • Trademark and Advertising
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