Kyle Quackenbush, Girard Sharp Photo

Kyle Quackenbush



Kyle Quackenbush prosecutes class actions and other complex civil litigation, with a focus on antitrust. He has participated in all stages of litigation, including drafting pleadings, coordinating document discovery, taking depositions, preparing dispositive motions, and trial. Among other work, Kyle has contributed his skills to several antitrust cases involving the pharmaceutical industry, focusing on the interplay between antitrust and intellectual property law as well as market concentration within payor and provider networks. He was named a Northern California Super Lawyers “Rising Star” in 2020 and 2021. 

Kyle also volunteers with the Federal Pro Bono Project of the Bar Association of San Francisco. In one case, he represented a plaintiff who alleged employees at Salinas Valley State Prison were deliberately indifferent to the plaintiff’s serious medical needs, in violation of the Eighth Amendment. In another case, he represented a homeowner plaintiff in settlement negotiations with Wells Fargo.

During law school, Kyle was a Summer Honors Legal Intern at the Federal Trade Commission’s San Francisco office, and a Legal Extern at the Washington State Attorney General’s Office. While at the FTC, he co-authored The Efficiencies Defenestration, Are Regulators Throwing Valid Healthcare Efficiencies Out The Window?, published in the winter 2017 issue of the Journal of the Antitrust and Unfair Competition Law Section of the California Lawyers Association.

In addition to his membership in the American Bar Association and the Bar Association of San Francisco, Kyle participates in the Barristers Association of San Francisco, working to provide information and resources to lawyers in their first ten years of practice.


University of Washington School of Law, J.D.

Santa Clara University, B.S., Political Science; B.A., Spanish Studies


  • State of California
  • US Court of Appeals – Second Circuit
  • US Court of Appeals – Ninth Circuit
  • US District Court – Northern District of California
  • US District Court – Southern District of California
  • US District Court – Northern District of Illinois


  • Spanish (conversational)
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