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William Cahill

Hon. William J. Cahill (Ret.)

Case Manager
Scott Schreiber
T: 415-774-2615
F: 415-982-5287
Two Embarcadero Center, Suite 1500, San Francisco, CA 94111


Hon. William Cahill (Ret.) has been a full time neutral for over ten years and has successfully mediated and arbitrated thousands of cases involving parties and companies from all around the world including Asia, Europe, South America, and the United States. Judge Cahill’s extensive experience covers a wide range of issues including corporate and commercial, securities, health care, insurance and reinsurance, intellectual property, and construction and engineering, among others.

Judge Cahill is a reputable and sought-after neutral who has been honored with numerous accolades in recognition of his work. Judge Cahill relates to all participants in a case and enjoys the challenge of difficult assignments. Clients and lawyers report that he quickly grasps complex facts and law and they appreciate his creative settlement ideas that lead to closure.

Representative Matters

  • Mediated a contract dispute between a Silicon Valley company and a Korean DRAM manufacturer
  • Mediated multi-million dollar insurance coverage case in the JAMS London office between a United States carrier and its French insured
  • Mediated business dispute related to investment structure of bridge note purchased from a Chinese company through a global trading firm
  • Mediated case between a Japanese construction company and port authority in Guam over alleged unauthorized tariffs and penalty fines
  • Arbitrated a patent case between a German and United States company regarding licensing and royalties
  • Lead arbitrator on a three person panel to decide a patent and licensing dispute between an Australian and Silicon Valley company and FDA approvals
  • Mediated breach of employment contract dispute and related allegations of misappropriation of trade secrets between international tax CPA and employer accounting firm
  • Mediated copyright dispute between Silicon Valley online social gaming company and Brazilian gaming company
  • Mediated numerous coverage disputes related to Directors and Officers Liability Insurance
  • Mediated cases involving dissolution of worldwide businesses and partnerships and underlying securities, stock, and payout issues
  • Mediated high technology licensing disputes between Japanese, Swiss, German, French, Indian, and other international companies involving software, hardware, biotech, pharmaceuticals, and medical devices
  • Mediated a case in Tokyo regarding an antitrust dispute between a Japanese and Swiss company
  • Mediated multi-million dollar coverage dispute under insurance policies providing specialty professional liability and media liability coverage for global communications and advertising company
  • Mediated a stockholder derivative suit involving allegations related to the purchase of 100 million shares of a public company by alleged private insiders for less than a fair market price
  • Mediated patent infringement dispute between foreign biotech companies over patents on blood-glucose testing devices used by diabetes patients
  • Mediated a patent infringement dispute over patents used in the manufacturing of tires in Korean and Japanese plants
  • Included on "National Mediators" list, Chambers USA America’s Leading Lawyers for Business, 2017-2019
  • Recognized as a Top California Neutral, Daily Journal, 2004, 2005, 2009-2013
  • Recognized as a Northern California Super Lawyer, ADR Category, San Francisco Magazine, 2004, 2006-2014
  • Recognized as one of the three Best Neutrals in the Bay Area, through an open survey of attorneys, The Recorder, 2007, 2008, and 2009
  • Recognized as one of the “500 Leading Judges in America,” by Lawdragon Magazine, 2006
  • Recognized as one of the Bay Area's Top 10 Mediators and Top 10 Arbitrators, The Recorder, 2002
  • Chosen as the top judge on the San Francisco Superior Court in a poll published in the San Francisco Examiner; Judge Cahill's settlement skills were noted in the December 14, 1998 article
  • Trial Judge of the Year, San Francisco, 1992
  • Lecturer, international, national, and local speaking engagements including topics related to class actions, mediation, employment, arbitration, insurance, construction, ethics, law and motion practice, expert witnesses, and clause drafting, among others
  • Former Member, Chief Justice Ronald George's Committee to revise the California Civil Jury Instructions
  • Judicial Officer, San Francisco Bar Association Bench Bar Media Committee, 1991-2000
  • Former Member, Board of Directors, Association of Business Trial Lawyers, 1996-1998; (In 1994, Judge Cahill was chosen by the ABTL to be an instructor on settlements to both the United States District Court, Northern California and the San Francisco Superior Court benches.)
  • Member, Litigation Section, Bar Association of San Francisco, 2000-present
  • "Reading the Room," ADR Profile, Daily Journal, October 16, 2015
  • Judge, San Francisco County Superior Court, 1991-2000
  • Partner, Bronson, Bronson & McKinnon, 1986-1991
  • J.D., Hastings College of Law, 1979
  • B.S., University of California at Berkeley, 1976

Counsel Comments

    • "As a mediator, Judge Cahill is prepared, diligent, perceptive, and persistent. He devotes his full attention to understanding the dispute, the dynamics of the parties and their counsel, and to reaching a resolution.” 
    • “Judge Cahill is an excellent arbitrator. He can handle matters that are extremely complex and he prepares very thoughtful and careful statements of decision.”




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