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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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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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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
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Steffen N. Johnson
Partner
Washington, D.C.

Steffen Johnson is an experienced appellate practitioner who co-chairs the firm's national Supreme Court and Appellate practice.

  • Litigation
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David H. Kramer
Partner
Palo Alto
David represents companies facing challenging disputes involving novel issues of law. 
  • Litigation
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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
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Samantha Alexandria-Booth Machock
Partner
San Diego
Samantha Machock is a partner in the San Diego office of Wilson Sonsini Goodrich & Rosati, where she is a member of the internet strategy and litigation group. Samantha’s practice focuses on representing technology and healthcare companies in complex, high-stakes consumer class and mass actions, particularly those involving cutting-edge consumer protection, false advertising, privacy, and cybersecurity-related claims. She has secured victories for her clients on a wide range of dispositive motions and class action issues: Recent victories include dismissal of claims against a generative AI service for allegedly misleading users, dismissal of a putative TCPA class action, and dismissal of claims seeking to create novel privacy rights for drivers under California’s Unfair Competition Law. Samantha is currently lead counsel for YouTube and Google in hundreds of cases alleging youth addiction and other harms as a result of YouTube’s design. 
  • Litigation
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Keith E. Eggleton
Partner Emeritus
Keith Eggleton retired from Wilson Sonsini after a career of over 30 years at the firm. He litigated a wide variety of matters, including securities fraud, corporate governance disputes, government actions (SEC and DOJ), commercial disputes, consumer fraud, and false advertising claims. He also counseled public and private companies, boards of directors, and executives on corporate governance, disclosure, and compliance issues.
  • Litigation
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Barry M. Kaplan
Partner Emeritus
Barry was previously head of the firm’s Northwest Litigation Group and has been described as “the dean of securities litigation in Seattle.”
  • Litigation
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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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David S. Steuer
Partner Emeritus
David is a civil litigator and trial lawyer, with an emphasis on securities litigation, intellectual property matters, general commercial disputes, and employee/trade secrets issues.
  • Litigation
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Benjamin Margo
Senior Counsel
New York
Ben Margo is senior counsel in the firm’s internet litigation and strategy group. He advises clients and litigates individual and class-based disputes involving content moderation, copyright and trademark infringement, defamation, online privacy, products liability, and unfair competition.
  • Internet Strategy and Litigation
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Tonia O. Klausner
Senior Pro Bono Counsel
New York
Tonia is an experienced litigator whose clients have included Amazon, Blackboard, Google, Mylan, Netflix, Salesforce, and Twitter.
  • Litigation
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Brad Barber
Associate
San Diego
Brad Barber is a litigation associate in the San Diego office of Wilson Sonsini Goodrich & Rosati. Brad handles a variety of litigation matters for clients in the technology, life sciences, medical device, consumer products, and financial services sectors. His practice focuses on complex commercial disputes, including trademark disputes, trade secret misappropriation, patent litigation, product liability disputes, restrictive covenant litigation, business torts, partnership disputes, and breach of contract litigation.
  • Litigation
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Leah Murphy
Associate
New York
Leah Murphy is an associate in the New York office of Wilson Sonsini Goodrich & Rosati, where she is a member of the internet strategy and litigation group. Leah’s practice focuses on litigating and advising on a range of issues facing internet and media companies, including content moderation, copyright, privacy, Section 230 of the Communications Decency Act, and the First Amendment.
  • Litigation
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