Douglas G. Mills

Practice Focus

  • Commercial & General Litigation
  • Energy Litigation
    • Contractual disputes
    • Joint venture disputes
    • Accounting disputes
    • Royalty disputes
    • Operator disputes
    • Fiduciary duties
    • Rights of first refusal
  • Intellectual Property & Technology Litigation
  • Occupational Health & Safety and Environmental Defence Litigation
  • Commercial Arbitration 
  • Mediation

Practice Areas


  • University of Calgary, Bachelor of Laws, 1983
  • University of Calgary, Bachelor of Science, 1978

Bar Admission

  • Alberta 1984

Professional Associations

  • Fellow, American College of Trial Lawyers (FACTL)
  • Member, Chartered Institute of Arbitrators (MCIArb)
  • Member, Law Society of Alberta
  • Member, Canadian Bar Association
  • Member, Western Canada Commercial Arbitration Society

Honours & Recognition

  • Named in Chambers Canada as a leading lawyer in Litigation - Corporate Commercial (Alberta) and Dispute Resolution Arbitration (Nationwide - Canada), 2016-2019
  • Named as Best Lawyers in Canada's Calgary Corporate and Commercial Litigation Lawyer of the Year, 2018
  • Named in Lexpert's Special Edition of Canada's Leading Energy Lawyers, 2017 and 2018
  • Named in the Canadian Legal Lexpert Directory as a leading practitioner in Canada in the areas of Directors' & Officers' Liability and Securities Litigation, 2012-2017, and in the area of Commercial Litigation annually since 2004
  • Named in The Legal 500 Canada as a recommended lawyer in Canada in Dispute Resolution, 2018
  • Named in Chamber's Global Client's Guide to the World's Leading Lawyers for Business in the area of Dispute Resolution, 2008-2015
  • Named in Best Lawyers in Canada in the area of Corporate and Commercial Litigation annually since 2008
  • Named in Benchmark Canada, the Guide to Canada's Leading Litigation Firms & Attorneys, as a leading litigator in Alberta and Canada, annually since 2012


  • Canadian Association of Petroleum Landmen (CAPL) Rights of First Refusal, March 12, 2002
  • Insight Information Inc. Operators v. Non-Operators, December 6, 2001
  • Co-presenter of papers for the Canadian Petroleum Law Foundation including Douglas G. Mills and Brian Beck, Recent Judicial Developments of Interest to Oil & Gas Lawyers (1998) 36 Alta. L. Rev. (No.2) 486
  • Douglas G. Mills, Carolyn A. Wright and Julie J.M. Taylor (née Inch), Exploring the Balance of Power in the Operator/Non-Operator Relationship under the CAPL Operating Procedure (2010) 48 Alta. L. Rev. (No.2) 363

Community Involvement

  • Board Chair, Fort Calgary Preservation Society
  • Executive Board Member, Alcove Addiction Recovery for Women Society

Professional & Firm Involvement

  • Member, Conflicts Committee, BD&P
  • Former Co-Leader of Litigation Business Unit, 1997-2016
  • Past Instructor in the civil litigation component of the Alberta Bar Admission course, at the University of Calgary Trial Advocacy program and provides seminars to various client and industry groups on civil litigation and occupational health and safety matters