Mandi Deren-Dubé



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Education & Qualifications

  • Alberta Bar (2017)
  • JD (Alberta, 2016)
  • B.Comm. with distinction (Alberta, 2013)

Mandi Deren-Dubé is a litigator who focuses on corporate and commercial disputes, secured and unsecured credit enforcement, and commercial insolvency matters. Mandi also advises on all types of employment matters.

  • Regularly acts for banks and credit unions in secured and unsecured enforcement proceedings against individuals and corporations, including seizure of assets, foreclosure and sale of real property, and appointment of receivers across a broad range of industries, including agriculture and farming, medical and veterinary, construction, oil and gas, retail, and restaurants.
  • Regularly acts for co-operatives across Western Canada in collecting and enforcing on unpaid debts by members, as well as all types of contractual, property, and credit-related disputes.
  • Acted for receivers and trustees on legal matters arising out of commercial and personal insolvency proceedings.
  • Acted for a corporation who was defrauded out of several million dollars by an independent contractor. Carried out complex enforcement proceedings following judgment.
  • Acted for trade suppliers in the collection and enforcement of unpaid invoices.
  • Acted for commercial landlords in disputes over unpaid rent, the validity of certain termination clauses, and other disputes over terms of the rental agreement.
  • Acted for landlords in disputes before the RTDRS, as well as appeals to the Court of Queen’s Bench of RTDRS orders.
  • Glenn Thompson (Re), 2020 BCEST 8 – Acted for the director of a corporation and successfully appealed a decision by the Director of Employment Standards that the director was personally liable for unpaid wages.
  • Shelter Canadian Properties Limited v Aviva Insurance Company of Canada, 2021 ABQB 217 – Acted as co-counsel for a property management company and real estate investment trust and successfully obtained judgment ($1.4 million) against their insurers for unpaid rental losses arising out of the Fort McMurray wildfire.
  • Pinder v HML Contracting Ltd, 2021 ABCA 207 – successfully obtained an order for security for costs on a solicitor and client basis before the Alberta Court of Appeal.  The Appeal arises out of a judgment obtained against the Defendant pursuant to a personal guarantee of the debts of a corporation, following the receivership and subsequent bankruptcy of that corporation.
  • Acted for shareholders and directors in a number of shareholder disputes, including successfully defending against claims of oppression and derivative actions.
  • Successfully obtained a Replevin Order directing the return of improperly seized assets of a contractor following a failed agreement for purchase and sale of real property.
  • Acted for employers in a wide variety of disputes, including claims of sexual harassment and discrimination, wrongful dismissal, and breaches of human rights legislation.
  • Acted for debtors in defending against enforcement proceedings, including overturning judgments that were improperly granted without notice to the debtors.
  • Conducted a significant number of workplace investigations on behalf of union and non-union employers, including investigations of claims for harassment, discrimination and racism.

Mandi advises and represents businesses with all types of disputes, including but not limited to breaches of contract; commercial lease disputes and other real property disputes; employment issues; fraud, conspiracy, breach of fiduciary duty investigations and claims; shareholder disputes; and commercial debt collections and foreclosure matters. She takes a practical and results-based approach to solving problems for her clients.

Her insolvency and restructuring practice consists of representing secured and unsecured creditors with realizations and enforcement of security. She also assists companies in financial distress and represents shareholders and directors of insolvent corporations in navigating the insolvency process, including by defending claims against directors and officers and advising regarding shareholder disputes.

Mandi has experience with emergency and urgent applications such as injunctions, preservation of property orders, receivership applications, and other types of interim relief.  She has represented clients before all levels of court in Alberta, and she has resolved disputes through litigation as well as mediation and judicial dispute resolution.

Mandi also has experience conducting independent workplace investigations. She has assisted clients with the investigation of allegations ranging from specific complaints about a single individual or instance, to high-profile, high stakes allegations by multiple complainants of a culture of workplace violence and harassment, a hostile work environment, and systemic discrimination. Mandi is an objective and fact-based investigator who prides herself on being sensitive, discreet and impartial.

With a commerce degree and past management experience in the oil and gas and transportation industries, Mandi brings a strong business background and in depth knowledge of various industries to her legal practice.

  • Volunteer, Queen’s Bench Amicus Project, Pro Bono Law Alberta
  • Volunteer, Civil Claims Duty Counsel Project, Pro Bono Law Alberta
  • Member, Creditor and Debtor law section and Labour and Employment Law section, Canadian Bar Association
  • Deans’ honours list, Alberta School of Business (2010-2013)
  • Louise McKinney Scholarship for Exceptional Academic Achievement (2012)
  • Jason Lang Scholarship for Academic Achievement (2011)
  • University of Alberta Undergraduate Scholarship for Academic Achievement (2011)
  • Isabel Munroe Smith Memorial Scholarship for Academic Achievement (2010)
  • Deans’ honours list, Faculty of Arts (2009-2010)