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Dave Lassen

He/Him

Attorney

T 206.622.3150 Seattle
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Dave Lassen is a lawyer in DWT's litigation practice group. As a seasoned attorney, Dave has more than 20 years of experience defending complex cases in courts and arbitrations, and draws as well on his experience as an in-house attorney managing a worldwide docket of matters for a leading aerospace company.

Before joining DWT, Dave was Senior Counsel for Product Liability at The Boeing Company, where he was responsible for managing and coordinating the company's defense in product liability matters, both commercial and military, worldwide, and where he advised business leaders on accident investigations, risk mitigation, and other issues. Before joining Boeing, Dave was in private practice in Seattle, defending clients in all phases of litigation in the U.S. and around the world. His matters ranged from personal injury actions arising from military aviation accidents to eight-figure arbitrations for alleged breaches of contract.

Admitted to Practice

  • Washington

Education

  • J.D., University of California, Los Angeles School of Law, 2002
  • B.A., English Literature, Brigham Young University, 1999

Background

    • Senior Counsel, The Boeing Company, Seattle, 2020-2024
    • Associate, Counsel, Senior Counsel, Perkins Coie LLP, Seattle, 2005-2020
    • Associate, Arnold & Porter LLP, Los Angeles, 2002-2005
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