Cozen O’Connor: Walsh, William

William H. Walsh



(206) 224-1296

(206) 621-8783

Bill Walsh concentrates his practice on a variety of general litigation matters with particular emphasis on aviation litigation and serves as the firm’s co-chair for the Aviation Practice Group. Bill is an experienced trial lawyer, having successfully represented a substantial number of corporate and individual clients in a broad range of complex civil cases including matters involving products liability, securities litigation, professional liability, personal injury, medical malpractice, liquor/dramshop liability, medical device liability, environmental tort, maritime and admiralty, disability, aircraft accidents, eminent domain, real property disputes and employment discrimination.

Bill serves as Disciplinary Counsel for the Washington State Commission on Judicial Conduct and is co-chair of the firm’s Aviation Industry Team. He has been selected by his peers as a Top 100 Washington Super Lawyer.

Prior to joining private practice, Bill served as a special assistant U.S. Attorney and Air Force Judge Advocate, prosecuting civilian and military criminal matters as well as defending the federal government in employment discrimination cases.

Bill was a member of the 1984 University of Washington football team that won the 1985 Orange Bowl and was inducted in to the Husky Hall of Fame in 2016.

Bill earned his J.D., cum laude, from Gonzaga University School of Law. He received his bachelor's degree from the University of Washington.


Six Cozen O’Connor Attorneys Named to 2019 Washington Super Lawyers List

June 12, 2019

Super Lawyers has named six attorneys at Cozen O’Connor to its 2019 lists of top practitioners in Washington.

Cozen O’Connor Names Six New Shareholders

September 07, 2017

Cozen O’Connor is proud to announce the promotion of six members to shareholders of the firm: David Brisco (San Diego), Michael de Leeuw (New York), John Dickenson (West Palm Beach), Jonathan Lichtenstein (Philadelphia), William Walsh (Seattle), and Ingrid Welch (Philadelphia).

Microsoft Makes VR Drone Fight Simulator Available on GitHub

February 21, 2017

William Walsh discusses drones and the need for training and safety testing in LinuxInsider.

William Walsh Discusses the Risks of Drones During the Holiday Buying Season in Business Insurance

December 06, 2015

Drone sales that could top 1 million this holiday season have lawyers warming up for a wave of claims, with differing views on the insurance industry's readiness for the risks that commercial and consumer drone operators will bring.

Cozen O’Connor Continues to Grow West Coast Presence with Addition of William Walsh

March 31, 2014

Cozen O’Connor has hired experienced commercial litigator William Walsh as a member, further expanding the firm’s litigation strengths in its Seattle office. Mr. Walsh has successfully represented numerous clients in court in a variety of areas, particularly with regard to aviation, products liability, and professional liability matters.


Space Regulations: To Boldly Go … Or Lightly Tread

February 06, 2019

Bill Walsh discusses why reconciling SPD-2 and SPD-3 through the new rulemaking process could likely prove beneficial to the commercial space industry.

California Federal Court Declares Drones are Aircraft [Alert]

January 18, 2019

William Walsh discusses the decision in Philadelphia Indemnity Insurance Company v. Hollycal Production, Inc and what it could mean for the future of drone law.

Could Criminal Penalties for Negligent Drone Operations Extend to Corporations? [Aviation Alert]

May 24, 2018

Bill Walsh discusses why criminalization of negligent drone operation could negatively impact ICAO's and the United States' goal of transparency in aircraft accident investigations.

FAA’s Automated UAS Approval System — A Significant Step Forward [Aviation Alert]

March 19, 2018

Bill Walsh discusses the FAA's LAANC system, next steps in implementing it nationwide, and how this will impact the drone industry and lead to the day of the drones.

Drone Advisory Group Raising Regulation Questions [Aviation Alert]

November 08, 2017

Bill Walsh discusses a recent article in the Washington Post and its implications for the Drone industry.

Drone Risks Create New Legal Challenges

September 01, 2017

William Walsh, a member of the firm's Aviation Litigation Practice, authored, "Drone Risks Create New Legal Challenges," for Risk Management Magazine.

Perspectives: Commercial Use of Drones Could be Grounded by Costs [Business Insurance]

January 02, 2017

William Walsh, co-chair of the Aviation Industry Team, discusses the significant tension between the Federal Aviation Administration regulation for commercial drones and any conceivable economic model of a profitable retail drone delivery operation.

Events & Seminars

Past Events

2016 London Market USA Study Tour

July 10, 2016 - Chicago, IL

2016 RIMS Annual Conference

April 10, 2016 - San Diego, CA

ACI 2016 Risk Management Conference

January 13, 2016 - Nashville, TN

ACI's 16th Annual Risk Management Conference

January 15, 2015 - San Diego, CA

2014 Seattle Insurance Seminar

September 25, 2014 - Seattle, WA


  • Gonzaga University School of Law, J.D., cum laude, 1992
  • University of Washington, B.A., 1988

Awards & Honors

Martindale-Hubbell AV Preeminent® rated

Washington Super Lawyer, 2003-2006, 2010-2019

Top 100 Washington Super Lawyer, 2014-2015

  • Washington
  • Oregon
  • U.S. Court of Appeals for the Ninth Circuit
  • U.S. Court of Appeals for the Eighth Circuit
  • U.S. District Court -- North Dakota
  • U.S. District Court -- Western District of Washington
  • U.S. District Court -- Eastern District of Washington
  • U.S. District Court -- Oregon
  • International Association of Defense Counsel
  • Washington Defense Trial Lawyers Association
  • Marine Insurance Association of Seattle
  • American Bar Association, Forum on Air and Space Law Member
  • Aviation Insurance Association