Shannon D. Sweeney

Shannon D. Sweeney is a litigator and trial attorney with a focus on class action litigation, complex corporate litigation, and large commercial disputes. With creative litigation strategy and advocacy, empathetic guidance, and tenacious courtroom representation, she has defended class actions in state and federal courts across various industries, handling suits related to products liability, mislabeling and false representation claims, pharmaceutical and medical device defects, unfair competition, securities fraud, breach of contract, and statutory noncompliance issues (including defending landlords against claims of security deposit mishandling and improper late charges). Her clients have ranged from publicly traded companies, large landlords and property managers, and construction companies, to individuals and companies embroiled in employment, contractual, and management disputes.

Shannon also has appellate experience in California state and federal courts, including successfully arguing at the United States Court of Appeals for the Ninth Circuit.  She is honored to be a long-standing faculty member and Program Director for the National Institute for Trial Advocacy, teaching courses in both trial and deposition skills.


  • J.D., University of San Francisco School of Law
  • B.A., Scripps College

Areas Of Practice

Experienced, forward-thinking advocates who go beyond the expected for clients in dispute prevention and resolution.

Our construction attorneys have substantial experience with the diverse and often complex aspects of the construction business.

Our real estate practice is one of the largest in the American West, including Arizona, California, Colorado and Nevada with experience in all aspects of the real estate development process, from due diligence, acquisition and finance, through land use permitting and entitlements, to leasing and sale.


  • Class Action
  • Commercial & Business Litigation

Awards and Honors

Ms. Sweeney was selected by her peers for inclusion in the 27th, 28th, 29th and 30th edition of Best Lawyers in America® in the field of Commercial Litigation. She also has been selected for the “Women of Influence” award by San Diego Metropolitan Magazine2020. Ms. Sweeney was also recognized in the special section titled, “Women of Influence in Law 2021,” of the San Diego Business Journal (SDBJ) for her accomplishments in the San Diego legal community.


  • Member, State Bar of California
  • Member, San Diego County Bar Association
  • Member, Lawyers Club of San Diego
  • Former Chair and Member of Moxie Theatre Board of Directors


  • California (all State and Federal Courts)
  • New York
  • Texas (Inactive)