Pascale Dionne-Bourassa

Pascale is a lawyer with more than 20 years of experience in civil and commercial litigation as well as construction law. She also has a vast experience in class actions in the areas of civil and competition law.

She acts as plaintiff and defence counsel in connection with numerous mandates on behalf of major companies in various fields including the construction area. Me Dionne-Bourassa is one of the few lawyers in the Province of Québec with an expertise in competition law. She has acted as an advisor in the development of competition compliance programs and has represented her clients in inquiries into restrictive business practices and criminal offences.

Me Dionne-Bourassa is invited to speak by various bodies and associations.

Before founding d3b Avocats, Pascale Dionne-Bourassa practised for 5 years in a litigation boutique and prior to that, she practised for more than 12 years in a major national law firm.

A representative sample of mandates

In the area of commercial litigation and construction

  • Has acted on behalf of a major steel company, in a lawsuit for damages related to the failure to execute a contract and the loss of work as well as in relation to a claim against this company in the execution of the Champlain Bridge project (Ottawa-Aylmer).
  • Advises clients with questions relating to public calls for tenders and awarding of contracts.
  • Has acted as an attorney for an important corporation operating in the steel industry in the context of private arbitration.
  • Acts for a global timber company in the context of a litigation relating to the valuation of inventories and working capital further to a sale of assets.
  • Acts for a British corporation specialized in the manufacturing of waterproof membranes used in major construction works.
  • Acts in the context of numerous recourses for an important paramunicipal corporation which acts as real estate developer and promoter.
  • Acts for a corporation specialized in underwater works in a claim for additional costs and damages against the Ministère des Transports du Québec in connection with an underwater repair work contract.

Disciplinary law

  • Acts on behalf of pharmacists in matters concerning professional ethics.
  • Acts as an advisor and attorney for a self-regulatory organization in the securities field.

In the area of class actions and competition law

  • Has acted on behalf of a leading hotel chain in a class action related to electromagnetic emissions.
  • Has acted on behalf of a leading pharmaceutical company in numerous class action suits instituted pursuant to alleged violations of the Competition Act.
  • Has acted on behalf of a major drug manufacturer in a class action suit instituted in order to claim damages allegedly resulting from the use of a cold medication intended for children.
  • Has acted as an advisor and instructor in relation to the development of compliance programs for companies working in various sectors including the construction and forest industries.
  • Has acted as an advisor to various clients in connection with seizures and criminal inquiries conducted by the Competition Bureau.
  • Acts for an American publishing house in a class action with regard to electronic books.
  • Acts as Presiding Officer in competition law mandates entrusted by the Canadian Department of Justice.
  • Acts for automobile parts manufacturers in numerous class actions pursuant to alleged Competition Act infringement.
  • Has acted for an important paramunicipal corporation in the context of a class action alleging illegal rent increases.
  • Acts for a Japanese electronics company in the context of a class action related to price fixing conspiracy allegations.

In the area of real estate litigation

  • Advises managers and building owners and represents them in the context of litigations between them and commercial tenants among other things.


  • 1998 – Called to the Québec Bar
  • 1996 – Université de Montréal, LL.B.
  • 1993 – Minor in arts and sciences, Criminology and political science, Université de Montréal
  • Canadian Forces, Naval Reserve (1991-1997). Rank achieved: lieutenant.

Areas of expertise

  • Construction Law
  • Civil, Commercial and Real Estate Litigation
  • Civil and Commercial Arbitration
  • Class Actions
  • Competition Law


Co-author with Barry Zalmanowitz of the chapter entitled "Non-criminal Review of Agreements among Competitors that Prevent or Lessen Competition Substantially", in James Musgrove, Fundamentals of Canadian Competition Law, 2nd edition., Toronto, Carswell and Canadian Bar Association’s Competition Law Section, 2010

Conferences et presentations

  • Open Forum – Construction Law
    Conference : La bonne foi du donneur d’ouvrage (les obligations d’information et de collaboration) (Spring 2019)
  • Open Forum – Disciplinary Law
    Conference : The Trustee’s Disclosure Requirement (April 2019)
  • Congrès 2018 de l’Association des Avocats et Avocates de Province
    Conference : Le top 10 des récentes décisions du Conseil de discipline du Barreau du Québec …quelques leçons à retenir…
  • Chamber of Commerce of Metropolitan Montreal
    Conference related to : l’Opération retour à l’école (April 2018)
  • Open Forum – Construction Law
    Conference : Les principes de droit pénal issus des arrêts Jordan et Cook peuvent-ils être importés en matière disciplinaire? (April 2018)
  • Review of recent jurisprudence with respect to professional liability
    Grande Rencontre Contech « Les Réclamations sous tous les angles », 7 novembre 2013, Palais des congrès, Montréal
  • Better management of claims
    12e journée d’étude sur les réclamations sur contrats, Université Laval, Faculté des sciences et de génie (2013)
  • Quebec Barꞌs Seminar on the Art of Pleading
    Witness at the Quebec Barꞌs Seminar on the Art of Pleading, a course within its Continued Education Program which is given yearly at the University de Sherbrooke (since 2011).
  • Mastering the subtleties of competition legislation to ensure the compliance of your contract in accordance with the chosen jurisdiction
    Conference "Legal and business guide to trans-border and international contracts", Canadian Institute and Insight, speaker (2010)
  • Competition Class actions instituted in the Province of Québec
    Canadian Bar Association, competition law section, panelist (2009)
  • Presentation on the Competition Act
    On behalf of several clients including major companies (2009). Presentation accredited by the Québec Bar.
  • Training session on civil law given to paralegals
    Insight Information

Associations and activities

  • Barreau du Québec
  • Canadian Bar Association
  • Member of the Executive Committee of the Construction Law Section, Canadian Bar Association, Quebec Branch (2018 - …)
  • Member of the Executive Committee of the Alternative Dispute Resolution Section, Canadian Bar Association, Quebec Branch (2018 - …)
  • Montreal Bar :
    - Member of the Women in the Legal Profession Committee (2016-2018)
    - Member of the Liaison with the Superior Court, Civil Division Committee (2018 - …)
  • École du Barreau du Québec (Professional legal training course): Lecturer on Obligations (2018)