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Attorney Spotlight

Demian Ahn
Partner
Washington, D.C.
Demian Ahn is a member of the firm’s data, privacy, and cybersecurity practice based in Washington, D.C. He leads the firm’s incident response practice and advises companies on compliance, regulatory, and crisis management matters relating to emerging technologies of all kinds.
  • Data, Privacy, and Cybersecurity
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Josephine Aiello LeBeau
Partner
Washington, D.C.
Josephine focuses on matters related to compliance and enforcement of U.S. export control and sanctions.
  • National Security and Trade
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Ali R. Alemozafar
Partner
San Francisco
Ali counsels clients on patent strategy, prosecution, and diligence for financings, M&A, and IPOs.
  • Patents and Innovations
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Lester Ang
Partner
Palo Alto
Lester Ang is a corporate and securities partner in the Palo Alto office of Wilson Sonsini, where he works with private and public technology and life sciences companies through all stages of their growth, as well as with venture capital firms and private equity firms.
  • Corporate
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Brian Appel
Partner
Palo Alto
Brian Appel is a partner in the Palo Alto office of Wilson Sonsini Goodrich & Rosati, where he practices corporate and securities law. He advises companies on general corporate matters, including formation and operation, corporate governance, debt and equity financings, mergers and acquisitions, and securities-related matters. He has assisted early-stage companies in numerous capital-raising transactions, including venture capital financings.
  • Corporate
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Matthew A. Argenti
Partner
Palo Alto
Matt is an experienced patent litigatior with an focus on post-grant review proceedings before the PTAB.
  • Litigation
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Hin Au
Partner
Palo Alto
Hin Au is a partner in the Palo Alto office of Wilson Sonsini Goodrich & Rosati, where he is a member of the patents and innovations practice. Hin provides IP strategy and counseling services to clients in a wide range of technical fields, including MedTech, digital health, biotech, medical/diagnostic devices, software, robotics, autonomous vehicle technologies, and clean energy. He has assisted many clients with building their patent portfolios and securing key strategic patents. Hin has hands-on engineering industry experience, having previously worked as an R&D engineer for six years at large U.S. semiconductor corporations. A native of Singapore, Hin is also fluent in Mandarin and Cantonese.
  • Patents and Innovations
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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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Megan J. Baier
Partner
New York
Megan represents technology and life sciences clients in corporate transactional matters.
  • Corporate
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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
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Jeffrey C. Bank
Partner
Washington, D.C.
Jeff represents companies in antitrust disputes, including multi-district litigations and cartel cases.
  • Antitrust and Competition
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Joshua A. Baskin
Partner
San Francisco
Joshua Baskin is a partner in the San Francisco office of Wilson Sonsini Goodrich & Rosati, where he maintains a leading trial practice. Josh has significant jury trial experience in state and federal courts across the country, including in trade secret, trademark, and commercial contract trials. In just the past few years, Josh obtained a complete defense verdict in a trade secret jury trial in California state court in which the plaintiff sought over a billion dollars, won a directed verdict in a trademark infringement trial on behalf of the defendant where the parties shared the same name, and obtained a multimillion-dollar verdict from a federal jury in a breach of contract action.

Josh is a cutting-edge talent in marshalling complex facts and incorporating them into trial presentations. He has a complete command of modern trial technology and uses it to streamline trial preparation and communicate to courts and juries.

In addition to his trial practice, Josh is deeply committed to pro bono work. He has taken on several high-impact pro bono cases addressing environmental protection issues.
  • Litigation
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Mark Bass
Partner
Washington, D.C.
Mark Bass is a partner in the Washington, D.C., office of Wilson Sonsini Goodrich & Rosati, where he works with public and private technology companies at all stages of growth. He also represents venture capital funds, private equity firms, and investment banks in financings and public offerings. 
  • Corporate
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Mark B. Baudler
Partner
Palo Alto
Mark is a corporate law veteran, having advised start-ups and mature public companies for more than 25 years.
  • Corporate
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