John G. Cowperthwaite
Attorney John G. Cowperthwaite headshot

John G. Cowperthwaite

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John G. Cowperthwaite is of counsel and a highly valued trial attorney. His undergraduate degree was acquired from the University of Puget Sound, Tacoma Washington. His Juris Doctorate was obtained from University of San Francisco School of Law.

In his 41 years of experience, John has tried numerous cases to verdict. His practice includes many facets of insurance defense including toxic torts, landslide/subsidence, personal injury, asbestos litigation, premises liability, construction defense, product liability, and landlord defense.

Practice Areas:

  • General Civil And Trial Practice In All State and Federal Courts With An Emphasis on Insurance Defense
  • Personal Injury
  • Complex Asbestos Litigation
  • Premises Liability
  • Construction Defense
  • Landslide/Subsidence Law
  • Product Liability
  • Landlord Defense

Current Employment Position

  • Of Counsel

Bar Admissions

  • California, 1980

Past Positions

  • United States Attorney, Criminal Division, Law Clerk


  • University of San Francisco School of Law, San Francisco, California
    • Juris Doctor - 05/1980
  • University of Puget Sound, Tacoma, Washington
    • Bachelor of Arts - 1975

Published Works

  • Comment, "Admiralty Jurisdiction and the FMLA: The Maritime Lien on Houseboats", 14 University of San Francisco Law Review 641, 1980

Professional Associations and Memberships

  • Bar Association of San Francisco, Member
  • Alameda County Bar Association, Delegate, State Bar Convention, 1985 to 1985
  • The State Bar of California, Member
  • Association of Defense Counsel, Member
  • Lawyers' Club of Alameda County