David J. Corrigan, K.C.

Blake Hafso is a top attorney recognized by Best Lawyers in the practice area(s) of Labour and Employment Law. Blake, who practices law in Calgary, Alberta, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Blake is held by other top lawyers in the same geographic and legal practice area.

Maureen McCartney-Cameron is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation. Maureen, who practices law in Calgary, Alberta, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Maureen is held by other top lawyers in the same geographic and legal practice area.

Jennifer Biernaskie is a litigation strategist who finds solutions. She skillfully analyzes a claim from all sides, considering both the present details and what will happen down the road. The end result is a forward-thinking strategy that shapes a successful future for her clients. Her strong track record for resolving claims is based on skill, creative agreements and common sense in commercial litigation, insurance defence, and administrative law. With particular proficiency in high-complex...

Sandy Vander Ziel joined Dunphy Best Blocksom LLP in 2013 and practices exclusively in family law. She is a registered collaborative lawyer, mediator and arbitrator, as well as a dispute resolution officer with the Court of King’s Bench. She has practiced in the area of family law at local and national law firms since 2002. Sandy has significant experience with a variety of methods of Alternate Dispute Resolution including Collaborative law, lawyer assisted mediation, arbitration and in...

Kelly practices energy, commercial and securities litigation. He has extensive experience with claims in the oil & gas, construction, and securities industries. He acts as counsel for investment dealers, investment advisors and investors in securities regulation, investigation and enforcement matters, and other investment related claims. Kelly has argued cases at all levels of court in Alberta, the Tax Court of Canada, securities regulatory tribunals, and the Canadian Investment Regulator...

Krysta Ostwald earned her B.A. in 1993 and her LL.B. in 1996, both from the University of Victoria. She articled with Fraser Milner and was called to the Alberta Bar in 1997. Since then she has practiced exclusively in the area of family law. Krysta worked with the firms of Laurie Allen & Associates, Turnbull Boyes and Soby Boyden Lenz, before creating Widdowson Kachur Ostwald Menzies LLP with her partners. Krysta emphasizes resolving disputes without unnecessary conflict. She utilizes ma...

Ryan Keays practises primarily in the area of energy and resources, but also focuses on business law and corporate and commercial law. He advises clients on a broad range of corporate and commercial matters, with a specific focus on the energy sector, both domestically and internationally. His practice has included representing clients in oil and gas asset acquisitions and divestitures, share acquisitions and divestitures, negotiation of production sharing contracts and other host government ...

Christiana joined Parlee McLaws’ Calgary office as an Associate in 2014 upon the completion of her Articles with the firm, having been previously admitted to the practice of law in New York State in 2010. She is an experienced trial and appellate litigator with a practice focused on civil litigation and administrative law, specifically in the areas of energy, construction, aviation, municipal governments, and insurance. Christiana has represented clients before the Alberta Court of Just...

Danielle Maksimow is partner in our capital markets group. She represents and advises borrowers, banks, insurance companies and other financial institutions on a wide variety of financial matters with an emphasis on US private placements of debt to institutional investors and national and cross-border syndicated and bilateral debt financing transactions, including asset-based lending transactions, project finance, acquisition financings, distressed lending transactions and complex intercredit...

Rick Breen is a highly-experienced lawyer assisting his clients with practical advice on structuring their corporate and personal matters. He has worked with owner managers to establish, grow and ultimately transition businesses for over 20 years. Additionally, Rick’s experience with personal planning allows him to ensure the personal affairs of his clients are in order. Rick provides pragmatic advice and counsel in acting for owner managers and their families to address risk and planni...