Courtney Kachur

Chrysten Perry, KC, is Managing Partner of the Calgary office, Co-Head of the Energy Group and a member of the Partnership Board. She is a partner in the Commercial Energy, Corporate and Projects and Infrastructure Groups and has more than 30 years of experience practicing corporate and commercial law in the energy industry. Chrysten advises clients on a diverse array of energy-driven matters including joint ventures, private share and asset purchase and sale transactions, transportation, pro...

Tim Ryan is a partner in Gowling WLG's Calgary office. He practises actively in the area of health law, professional regulation and professional liability. Tim's practice includes class action proceedings, administrative law and the defence of medical, pharmacist and engineering malpractice cases. He also has an interest in public and private international law matters. While at Cambridge, Tim concentrated his studies in public and private international law, including studies at the Lauterpach...

Joyce is a leading labour and employment lawyer, known to both clients and opposing counsel for being meticulous in preparation and fearless in execution. Employers depend on Joyce to help address sensitive and consequential matters with a focused, disciplined approach that achieves results. Leveraging 30 years of labour relations experience in British Columbia and Alberta, Joyce represents clients before the Alberta Labour Relations Board, the B.C. Labour Relations Board, and the Canada Indu...

Julie D’Avignon is a partner and head of the Tax Group in Calgary. Her practice focuses on providing tax advice in connection with mergers and acquisitions, corporate reorganizations, equity investments, flow-through share transactions and financings. Julie has extensive experience working with Canadian and international clients, public and private entities, tax-exempt entities, and private equity firms. Julie has particular expertise in resource and energy taxation, including with resp...

Alison Gray is a top attorney recognized by Best Lawyers in the practice area(s) of Administrative and Public Law, Construction Law and Corporate and Commercial Litigation. Alison, who practices law in Calgary, Alberta, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Alison is held by other top lawyers in the same geographic and legal practice area.

Doak Horne is a partner in Gowlings’ Calgary office, practising in the area of intellectual property litigation and patent prosecution for over 25 years. Doak is a Registered Patent and Trademark Agent in Canada and the United States, as well as a registered professional engineer. He has been involved in preparation, filing, and prosecution of patents, trade-marks, and industrial designs before the Canadian Intellectual Property Office, and been extensively involved in licensing matters...

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.

Karen Pirie, KC is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law, Medical Negligence and Professional Malpractice Law. Karen, who practices law in Calgary, Alberta, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Karen is held by other top lawyers in the same geographic and legal practice area.

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 ...

Tom Valentine has more than 30 years of experience in the oil and gas industry, both as a barrister and a solicitor. In 2002 and 2003, Mr. Valentine lived in Doha, Qatar, where he was senior counsel (projects) with Qatar Petroleum. While in Qatar, Mr. Valentine was responsible for a number of international gas and LNG projects, including projects in the United Kingdom (Qatargas II), India (RasGas) and Spain (Endesa Generacion). Since returning to Canada Mr. Valentine’s work continues to...