John C. Armstrong, K.C.

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 ...

Ryan Mullins is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law and Personal Injury Litigation. Ryan, 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 Ryan is held by other top lawyers in the same geographic and legal practice area.

Don Davies practises energy law, with a focus on the regulatory and litigation fields. Mr. Davies has represented oil and gas producers, pipeline companies and industry organizations in proceedings before the National Energy Board for more than 30 years. He has acted for both proponents and intervenors in many applications for the approval of pipeline facilities and for the determination of pipeline tolls and tariffs. His cases typically involve complex environmental, aboriginal, constitution...

Erin is a reliable and skilled advocate who leverages her considerable experience and substantial legal knowledge to find creative solutions to a range of complex and challenging matters. A trusted advisor to individuals and organizations alike, Erin’s practice encompasses commercial litigation, employment, and insurance & risk management. In her commercial litigation practice, Erin advises and represents parties on a wide range of general litigation matters, including disputes rela...

Rujuta Patel practises business law and competition law, with a focus on the resources and transportation sectors. She advises on private mergers and acquisitions, corporate reorganizations and restructurings of multinational and Canadian organizations, private placements and a variety of energy-related matters. She works regularly with energy services companies and is experienced in drafting, negotiating and advising on a broad range of services, drilling and engineering contracts. She also ...

Erin J. Runnalls is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Commercial Litigation, Health Care Law and Medical Negligence. Erin J., who practices law in Calgary, Alberta, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Erin J. is held by other top lawyers in the same geographic and legal practice area.

Laura Comfort is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation. Laura, who practices law in Calgary, Alberta, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Laura is held by other top lawyers in the same geographic and legal practice area.

Jessica's practice focuses on commercial litigation and arbitration, with an emphasis in insolvency and restructuring. She advises clients on general commercial disputes, all aspects of insolvency and restructuring matters, including cross-border proceedings, and banking and oil and gas related litigation. Clients value Jessica’s practical and collaborative approach to complex legal disputes and restructuring proceedings. Jessica has acted for debtor companies, guiding them through the ...

Karen's practice focuses on complex commercial, construction, and contract litigation and arbitration. Karen leverages her over 20 years’ of experience to advise clients on a broad range of complex litigation and arbitration disputes. Providing counsel to clients in the energy, agricultural, chemical and construction industries, she has been involved in the resolution of a variety of claims, including multi-party actions, contract disputes, estate litigation, product liability claims, a...

John is a member of the firm’s Indigenous, Environmental, and Project Development practice groups. His practice includes advising private sector and government clients throughout Canada on Indigenous, environmental, regulatory and natural resources matters. John advises oil sands developers, conventional oil and gas companies, railways, mining companies, utilities and other resource developers on environmental regulatory matters and on Indigenous law matters, including Indigenous consul...