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David Y. Yang

Fax +1.206.623.7022
Dave Yang is a partner in the firm’s Seattle office, where he is a member of the government contracts and procurement policy practice group.

Professional Background

Businesses of all sizes look to Dave Yang for his strategic counsel in navigating all phases of the procurement process. Drawing upon his practical knowledge of the government marketplace, Dave regularly advises clients on all critical aspects of their business, whether the subjects range from the more regular such as compliance and contract administration issues, bid protests, claims, diligence, intellectual property rights, prime-subcontractor disputes, and cost accounting matters to the more serious and unusual such as disclosures, investigations and government enforcement matters.

Dave regularly litigates on behalf of contractors before a diverse range of government forums, specializing in bid protests, where he has successfully protested and defended billions of dollars’ worth of some of the largest defense and civilian procurements before the U.S. Government Accountability Office and the U.S. Court of Federal Claims. In addition to his expansive protest record, Dave has recovered millions of dollars in Contract Disputes Act claims before the boards of contract appeals and also routinely defends contractors in False Claims Act cases in federal district courts nationwide. Dave has strategically obtained dismissals of numerous FCA lawsuits through the effective and efficient use of pre-trial motions and in ultimately achieving successful resolutions for clients in such high-stakes, and oft-times “bet the company,” cases.


  • Law360 Rising Star (2015)
  • Law Clerk to The Honorable Mary Ellen Coster Williams, U.S. Court of Federal Claims (2004)

Professional/Civic Activities

  • Vice Chair, ABA Section of Public Contract Law, Cost and Pricing Committee
  • Represent major defense contractor in FCA action alleging $9B in damages in connection with multiple U.S. Army contracts
  • Represent defense contractor in SBA size protest in connection with U.S. SOCOM’s $250M RAPTOR procurement
  • Represented Fortune 100 IT firm in GAO bid protests regarding U.S. Army’s ADMC-2 and ADMC-3 multi-billion-dollar acquisition vehicles
  • Represented defense contractor in U.S. Court of Federal Claims bid protest regarding U.S. Army’s Worldwide Logistics Support Services-C multiple award procurement valued at $25.5B
  • Represented Fortune 100 IT firm in GAO bid protest regrading U.S. Census Bureau’s 2020 Decennial Census (one of the highest profile civilian procurements in 2017) 
  • Represented Fortune 100 IT firm in GAO and Court of Federal Claims bid protests regarding U.S. Army’s $5 billion ADMC-3 procurement (the Army’s next generation IT acquisition vehicle)
  • Represented Fortune 100 IT consulting firm in GAO bid protest regarding U.S. Social Security Administration’s $10 billion ITSSC-2 procurement (SSA’s next generation IT acquisition vehicle)
  • Represented largest helicopter company in GAO bid protest regarding $1 billion U.S. TRANSCOM contract