James O'Sullivan

Lara Mason’s practice encompasses a wide range of commercial litigation matters, including commercial disputes, transnational and cross-border disputes, professional liability matters, insurance coverage disputes and class actions. Ms. Mason has appeared at all levels of court in Alberta, before the Supreme Court of Canada, and before the Alberta Utilities Commission. She has also participated in a variety of alternative dispute resolution processes.Ms. Mason joined our Calgary office a...

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Jim is both a lawyer and a Chartered Professional Accountant, CA. Prior to attending law school, Jim qualified as a Chartered Accountant with Touche Ross (now, Deloitte), an international firm of Chartered Accountants in Montréal, Quebec. He began his legal career in Calgary in 1981 with Ballem McDill & MacInnes (now, Gowling WLG). Prior to joining Carbert Waite LLP in 2007 as Associated Counsel, Jim practiced tax and corporate law with the Calgary office of the national law firm, ...

Aubrey is a partner based in our Calgary office and practices in all areas of commercial real estate including purchase, sale, development, financing and leasing. He has extensive experience in complex real estate transactions including both pre-development lands and lands with existing office, retail or industrial developments. He has completed transactions with various unique aspects such as environmental contamination, appurtenant water licenses, long term ground leases for development, sy...

Alex practices general commercial and civil litigation and advises clients with respect to a broad range of individual and corporate disputes, including contractual disputes, insurance matters, and tort-based claims. She also has extensive experience in construction matters, particularly with builders’ liens and delay claims. Alex has represented clients in the Alberta Court of Justice (formerly Provincial Court) and the Court of King’s Bench of Alberta, as well as in commercial a...

Katherine Stys is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law and Medical Negligence. Katherine, 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 Katherine is held by other top lawyers in the same geographic and legal practice area.

Thomas Cumming is a top attorney recognized by Best Lawyers in the practice area(s) of Insolvency and Financial Restructuring Law. Thomas, 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 Thomas is held by other top lawyers in the same geographic and legal practice area.

Ray Chartier practises commercial litigation, arbitration and dispute resolution, focusing on matters involving the energy industry, major infrastructure projects and the transportation sector. He also advises a broad range of clients on indigenous law issues, and on environmental, social and governance (ESG) risks, regulation and compliance issues. Ray's clients include project proponents, financial institutions and other stakeholders. Over the years, Ray has been involved in pipeline applic...

Shaun Partridge, KC is a partner based in our Calgary office. Shaun practices in our Real Estate and Corporate Commercial practice groups and has a practice that encompasses a broad range of sophisticated real estate and corporate–commercial transactions including corporate reorganizations and restructuring, real estate acquisition and disposition, development and financing. Shaun represents investors, developers and end-users with the acquisition, financing, development and disposition...

Jamie Flanagan is an experienced advocate who has guided his clients through difficult times for more than 30 years. Focusing on civil litigation, he handles commercial and construction litigation, employment law disputes, and estate litigation. When a matter proceeds to trial, Jamie has the litigation experience to aggressively and thoroughly pursue his clients' interests. He has appeared before the provincial, superior, and appeal courts of Alberta, British Columbia, and Saskatchewan on a w...