Patricia (Trish) L. Morrison


Partner and National Business Leader, Construction

[email protected]

Patricia (Trish) Morrison provides strategic advice to owners, developers, contractors, architects and engineers for the management of risk on construction projects from start to finish.

Trish has extensive experience in the mediation, arbitration and litigation of construction disputes on large-scale commercial, industrial and infrastructure projects, such as disputes involving tenders and RFPs, construction contracts, liens, design and engineering issues, construction deficiencies, cost overruns and delay.

She also advises clients on front-end project matters such as project delivery models, tendering and other procurement processes, contract negotiation and drafting (including P3 agreements) and provides advisory services throughout projects. Trish also advises on project-related environmental and product liability issues.

Trish is a fellow and the vice president of the Canadian College of Construction Lawyers, past chair of the Canadian Bar Association National Construction Law Section and a former director of the Calgary Construction Association. She regularly presents at construction industry and client seminars and is a frequent writer on a variety of construction law topics.

Trish provides legal services through a Law Corporation.



  • Project counsel for the Construction Manager of the TELUS Sky Project in Calgary, Alberta
  • Counsel for a design-build contractor in a dispute arising out of the design and construction of a highway infrastructure project in Alberta
  • Counsel for an international engineering company in a dispute arising out of the design and construction of a oilsands production facility
  • Counsel for a general contractor involved in disputes with the owner and numerous subcontractors arising out of the construction of an international airport
  • Defence of claim for breach of contract and negligence arising out of the explosion and destruction of a decoking facility at the CNRL Horizon Project in the oil sands
  • Counsel for an engineering company in an arbitration for damages arising out of the design and construction of a federal building in Alberta
  • Counsel in the defence of a claim for damages arising out of negligence and breach of contract related to the failure and forced shut down of a Boiler Feedwater Preheat Exchanger
  • Counsel for an owner in a six week, multi-party UNCITRAL arbitration claiming damages against two contractors and a fabricator in relation to the construction of a sour gas processing plant in northern Canada
  • Defended an international engineering company against a claim for damages arising out of negligent design and project delay on pipeline project in a five-week arbitration.
  • Counsel for an architect in the defence of an action by an owner for negligent design resulting in building envelope and other deficiencies

Beyond our Walls

Professional Involvement

  • Fellow and Governor, Canadian College of Construction Lawyers
  • Fellow, Construction Lawyers Society of America
  • Past Chair, Canadian Bar Association, National Construction Law Section
  • Member, Canadian Bar Association, Construction Law Section, Southern Alberta

Community Involvement

  • Director, Famous Five Foundation (Celebrating Leadership in Women), 2010- 2022

Awards & Recognitions

  • Recognized in the 2024 edition (and since 2011) of The Best Lawyers in Canada® (Construction Law).
  • Recognized in the 2024 (and since 2018) edition of Chambers Canada – Canada's Leading Lawyers for Business (Construction).
  • Recognized in the 2024 edition (and since 2023) of The Legal 500 Canada as a "Leading individual" (Construction, Dispute resolution) 
  • Recognized in the 2023 edition of the Lexpert/American Lawyer Guide to the Leading 500 Lawyers in Canada (Construction Law)
  • Recognized in the 2023 edition (and since 2011) of The Canadian Legal Lexpert® Directory (Construction Law; Commercial Arbitration).
  • Recognized in the 2023 (and since 2017) editions of Benchmark Canada - The Definitive Guide to Canada's Leading Litigation Firms & Attorneys as a Local Litigation Star: Alberta and a Litigation Star: Construction, Environmental.
  • Recognized in the 2023 edition (and since 2022) of Benchmark Canada - The Definitive Guide to Canada's Leading Litigation Firms & Attorneys in the "Top 100 Women in Litigation"
  • Recognized as a leading infrastructure lawyer in the 2023 edition (and since 2014) of Lexpert® Special Edition on Infrastructure.
  • Recognized in the 2023 edition (and since 2022) of Lexpert Special Edition: Energy
  • Recognized in the 2021 edition of Who's Who Legal: Canada.
  • Recognized in the 2021, 2020 and 2019 editions of Who's Who Legal: Construction.

Bar Admission & Education

  • Manitoba, 2015
  • Alberta, 1998
  • LLB, University of Calgary, 1997
  • BA (Hons.), Queen's University, 1993