Maureen is the firm’s national Co-Chair and a member of the firm’s Partnership Board. Maureen practices out of both our Vancouver and Calgary offices and is the former Managing Partner of Osler’s Calgary office (2011–2017). Maureen’s litigation practice is national in scope; she is a trusted advisor to significant corporate clients and represents their interests in virtually every province and court in Canada.
Maureen is recognized for her leading expertise in “bet the company” litigation including, commercial, resource, constitutional, aboriginal and administrative law. She is a seasoned trial and appeal lawyer with extensive experience in commercial arbitrations (domestic and international) and other forms of dispute resolution. Maureen routinely appears on matters of judicial review, regulatory appeal, and environmental, administrative, constitutional, Charter and indigenous claims in Federal and Provincial Courts across the country.
Among many other matters, Maureen acted as lead litigation counsel on the Trans Mountain Pipeline Expansion Project, successfully defending all regulatory appeals and judicial review applications as well as leading significant injunction and contempt proceedings.
Numerous industry publications describe Maureen as being widely regarded by clients and peers as one of Canada’s top litigators in the areas of energy & resource, indigenous, and commercial litigation, appellate advocacy, and constitutional and administrative law:
Benchmark Litigation notes that Maureen is described as: “a real force in the litigation community, taking charge and really appearing front and centre on big actions …” “She is very collaborative and really knows her stuff. She is very good at getting things under control.”
“Maureen speaks a language that everyone can understand, regardless of their experience.”
“She is an exceptional lawyer in every sense.”
Chambers and Partners ranks Maureen as Band 1 in Commercial Litigation and describes Maureen as follows:
“… a very capable litigator … does a good job of moving matters forward.”
“Very responsive, very competent. eloquent in advocacy and gives good advice.“
“An excellent lawyer who can be tough and tactful simultaneously. She puts our interests first and finds a solution to meet the entire situation.“
“Maureen is the best!“
“Consistently provides outstanding service and representation.”
“Maureen is excellent. She often thinks outside the box and provides sound, thoughtful and practical advice.”
Representative Work
- Business Council of Alberta
Significant decision at the Supreme Court of Canada: five judge majority finds the Impact Assessment Act unconstitutional
- Trans Mountain Canada Inc.
Trans Mountain Canada Inc. in its successful defence of four judicial review applications at the Federal Court of Appeal, challenging the June 2019 federal approval (Order in Council) of the Trans Mountain Pipeline Expansion Project
- Trans Mountain Canada Inc.
Supreme Court of Canada rules in favour of the Trans Mountain Expansion Project
- Equinor Canada Limited
Equinor Canada Limited and Husky Oil Operations Limited regarding commercial matters related to the potential Bay du Nord offshore oil project
- Kinder Morgan Canada Limited
Kinder Morgan Canada Limited in its litigation victories for the Trans Mountain Pipeline Expansion
- Terra Nova Consortium
Terra Nova Consortium in a challenge over its calculation of past and ongoing provincial royalties
- Kinder Morgan Canada
National Energy Board Recommends Approval of the $6.8-billion Trans Mountain Expansion Project
- Williams Group in a trial relating to a propylene purchase and sale agreement
- CNRL in a commercial dispute in relation to interests and obligations associated with the multi-billion-dollar Horizon Oil Sands operation
- Cabin Ridge in a multi-billion dollar constructive taking (de facto expropriation) claim against the Government of Alberta regarding freehold mineral rights and mineral leases.
- Represents industry and government clients in defence of various civil claims relating to damages allegedly related to a hydro-electric project.
- A Canadian oil company in an arbitration over the terms of a settlement agreement
- Counsel to the Government of Manitoba in defence of a $90+ million claim alleging constitutional and contractual breaches
- A Canadian oil company in an arbitration relating to agreements for regulated utility assets
- Atrum Coal & Cabin Ridge in a dispute with the Government of Alberta following a change of law to prohibit coal exploration on Government lands.
- Suncor Energy Products Inc. in a judicial review application before the Ontario Divisional Court concerning alleged environmental cumulative effects in Sarnia and involving various allegations of Charter breaches relating to the harm or risk of harm from exposure to pollutants
- Equinor Canada Limited and Husky Oil Operations Limited regarding commercial matters related to the potential Bay du Nord offshore oil project
- A Canadian oil company in an arbitration over the terms of a settlement agreement
- The Attorney General of Manitoba as intervener in a statutory appeal regarding Manitoba Hydro’s commitments to an Indigenous group in relation to the Manitoba-Minnesota Transmission Project
- Province of Manitoba in all judicial reviews regarding duty to consult Indigenous communities
- NOVA Chemicals in a dispute with Dow Chemical arising from a joint venture ethylene production plant.
- Representing Kinder Morgan in all challenges to the federal and provincial approvals of the Trans Mountain Expansion including motions for leave to appeal, judicial review, stays and injunction motions at the Federal Court of Appeal and the British Columbia Supreme Court
- Acted for a major international E&P company in a $30 million dispute with a pipeline company, 2016/17 under the Arbitration Act of Alberta
- Defending TC Energy in an Ontario Superior Court action by the Aroland and Ginoogaming First Nations against the National Energy Board and Canada, alleging failure to consult in relation to the TCPL mainline
- Representing TC Energy in obtaining multiple injunction Orders enjoining blockades to resource projects, Alberta Court of Queen’s Bench, January 2017, February 2017, March 2017
- Ernst v. EnCana et al: Defending EnCana in a $11 million claim for damages by a landowner for alleged damages sustained due to “fracking” in oil and gas operations, Alberta Court of Queen’s Bench
- Represent the Terra Nova Project (offshore Newfoundland) in a royalty dispute with the Province of Newfoundland and Labrador
- Representing Nova Gas Transmission Inc. in the defence of a number of Federal Court challenges (leave and judicial review motions) to pipeline projects (2015-17)
- Represent Murphy Oil in a royalty dispute with the Province of Newfoundland and Labrador;
- Defending ConocoPhillips, Statoil, Anadarko, et al in a multi-million dollar dispute with GSI at the Court of Queen’s Bench of Alberta over seismic data use and fees
- Defending CNRL in Devon, Bard et al., v. CNRL, a commercial dispute in relation to interests and obligations associated with the multi-billion dollar Horizon Oil Sands operation
- Acted for Shell Canada Limited, in the defence of challenges to Shell’s proposed Jackpine Mine expansion at the Alberta Court of Appeal and the Federal Court of Canada. Reported Decisions: Métis Nation of Alberta Region 1 v. Joint Review Panel, 2012 ABCA 352 (leave to appeal to SCC, denied); and Adam v. Canada (Environment), 2014 FC 1185
- Represented a major international resource company in a confidential contractual dispute arbitrated through the London Court of International Arbitration, 2015 (“LCIA”)
- Acted for Kinder Morgan Canada Inc., in the successful defence of multiple challenges to the proposed Trans Mountain Pipeline expansion (the “Project”) at the National Energy Board (“NEB”), the Federal Court of Canada (“FCC”), the Federal Court of Appeal (“FCA”), and the British Columbia Supreme Court (“BCSC”), including:
- Coldwater Indian Band and Chief Harold Aljam et al v. Kinder Morgan Canada Inc. et al: the successful defence of a judicial review application and appeal at the FCC and FCA regarding a pipeline expropriation dispute. Kinder Morgan was also entirely successful in its cross-appeal at the FCA. Reported Decisions: Coldwater First Nation v. Canada (Indian Affairs and Northern Development), 2013 FC 1138; Coldwater Indian Band v. Canada (Indian Affairs and Northern Development), 2014 FCA 277
- Coldwater Indian Band and Chief Lee Spahan et al v. Kinder Morgan Canada Inc. et al: defending against a judicial review of a decision of the Minister of Aboriginal Affairs and Northern Development relating to the pipeline right of way through reserve land
- The City of Burnaby v. Trans Mountain: part of successful defence team in injunction motion brought by the City of Burnaby to stop Trans Mountain from accessing City lands for the purposes of conducting NEB mandated tests and surveys integral to the assessment of the Project. Reported Decision: Trans Mountain Pipeline ULC v. Gold, 2014 BCSC 2133
- National Energy Board Ruling No. 40 and Order Mo-122-2014 (October 23, 2014) – successfully brought a Notice of Constitutional Question dated September 26, 2014, and argued that the doctrines of interjurisdictional immunity and federal paramountcy rendered certain Burnaby City Bylaws inoperable where they are inconsistent with the Rulings of the NEB. The resulting Order granted Trans Mountain access to Burnaby Mountain to complete technical studies related to the Project and prevented Burnaby from blocking Trans Mountain from completing the work. Leave to appeal to the Federal Court of Appeal dismissed
- Leave to Appeal Motions Successfully Defended and Dismissed by Federal Court of Appeal:
- City of Vancouver v. NEB and Trans Mountain Pipeline ULC;
- L.D. Harvey v. NEB and Trans Mountain Pipeline ULC;
- City of Burnaby v. NEB and Trans Mountain Pipeline ULC; and
- Lynne M. Quarmby, Eric Doherty, Ruth Walmsley et al v. NEB, Attorney General of Canada, Trans Mountain Pipeline ULC et al
- Tsleil-Waututh Nation v. NEB, Trans Mountain Pipeline ULC and Attorney General, defending an appeal of a National Energy Board decision before the FCA, based on alleged breaches of the Canadian Environmental Assessment Act and the Crown’s constitutional duty to consult.
- Dr. Gary Smith, Andrée Stow et al v. Attorney General of Canada and Trans Mountain Pipeline ULC, motion for judicial reviewing a decision of the NEB
- Represented Nalcor Energy in the successful defence of multiple challenges to the proposed Muskrat Falls and Churchill Falls hydro-electric Project in Newfoundland and Labrador (the “Project”), at the at the Federal Court of Canada, the Federal Court of Appeal, the Supreme Court of Newfoundland & Labrador, the Court of Appeal of Newfoundland and Labrador, and the Supreme Court of Canada, including:
-
- Sierra Club, Grand River Keeper et al v. Nalcor Energy, Government of Canada et al.,: the dismissal of the judicial review of the Report of the Joint Review Panel in relation to the environmental assessment of the Project. Reported Decision: Grand Riverkeeper, Labrador Inc. v. Canada (Attorney General), 2012 FC 1520
- Conseil des Innus de Ekuanitshit v. Nalcor Energy, Government of Canada et al: the successful defence at the FCC, FCA and SCC of the: (i) judicial review of the Federal Government Response to the Report of the Joint Review Panel and ultimate approval of the Project; and (ii) claim that the Crown had failed to consult/accommodate in relation to the Project. Reported Decisions: Conseil des innus de Ekuanitshit c. Canada (Procureur general), 2013 FC 418; Council of the Innu of Ekuanitshit v. Canada (Attorney General), 2014 FCA 189; Conseil des Innus de Ekuanitshit v. Attorney General of Canada, in his capacity of legal member of the Queen’s Privy Council for Canada, et al., 2015 CanLII 10578
- Nunatsiavut Government v. Her Majesty in Right of Newfoundland and Labrador: Representing Nalcor Energy before the Supreme Court of Newfoundland and Labrador and the Federal Court of Canada in the: (i) judicial review of both provincial and federal permits in relation to the Project; and, (ii) claim that the Crowns failed to fulfil their duties to consult and accommodate. Reported Decision Nunatsiavut v. Newfoundland and Labrador (Department of Environment and Conservation), 2015 NLTD(G) 1
- Nunatsiavut Government v. Attorney General of Canada: the judicial review of a federal Department of Fisheries and Oceans authorization in relation to the Project and the claim that the Crown failed to fulfil its duty to consult. Reported Decision: Nunatsiavut v. Canada (Attorney General), 2015 FC 492
- NunatuKavut Community Council Inc. v. Attorney General of Canada: the judicial review of a federal Department of Fisheries and Oceans authorization in relation to the Project and the claim that the Crown failed to fulfil its duty to consult. FCC Decision Pending.
- Nalcor Energy v. NunatuKavut Community Council et al: represented Nalcor Energy before the Supreme Court of Newfoundland and Labrador in its injunction motion to enjoin protestors from their illegal blockade of a work site and interference with Nalcor’s lawfully permitted work in relation to its Lower Churchill Hydroelectric Generation Project. Reported Decision: Nalcor Energy v. NunatuKavut Community Council Inc., 2012 NLTD(G) 175 and NunatuKavut Community Council Inc. v. Nalcor Energy, 2014 NLCA 46
- NunatuKavut Community Council Inc. et al v. Nalcor Energy et al: successful defence of an injunction motion brought by the Nuntukavut Community Council to enjoin a regulatory process. Reported Decision: Nunatukavut Community Council Inc. v. Newfoundland and Labrador Hydro-Electric Corporation (Nalcor Energy), 2011 NLTD (G) 44
- Crew Energy v. Cenovus: defending Cenovus in a commercial dispute pertaining to a farm-out agreement and the expiry of oil and gas Leases. Reported Decision: Crew Energy v. Cenovus Energy Inc., 2012 ABQB 462;
- BG International in a LCIA dispute with Canadian Superior Energy Corp. in relation to an AIPN joint operating agreement pertaining to gas exploration and development in Trinidad and Tobago. The dispute involved multiple applications for Interim Relief including receivership and CCAA protection at the Court of Queen’s Bench and Court of Appeal of Alberta: (2009) 448 A.R. 24 (QB); 457 A.R. 38 (C.A.)
Significant decision at the Supreme Court of Canada: five judge majority finds the Impact Assessment Act unconstitutional
Trans Mountain Canada Inc. in its successful defence of four judicial review applications at the Federal Court of Appeal, challenging the June 2019 federal approval (Order in Council) of the Trans Mountain Pipeline Expansion Project
Supreme Court of Canada rules in favour of the Trans Mountain Expansion Project
Equinor Canada Limited and Husky Oil Operations Limited regarding commercial matters related to the potential Bay du Nord offshore oil project
Kinder Morgan Canada Limited in its litigation victories for the Trans Mountain Pipeline Expansion
- Terra Nova Consortium
Terra Nova Consortium in a challenge over its calculation of past and ongoing provincial royalties
- Kinder Morgan Canada
National Energy Board Recommends Approval of the $6.8-billion Trans Mountain Expansion Project
- Williams Group in a trial relating to a propylene purchase and sale agreement
- CNRL in a commercial dispute in relation to interests and obligations associated with the multi-billion-dollar Horizon Oil Sands operation
- Cabin Ridge in a multi-billion dollar constructive taking (de facto expropriation) claim against the Government of Alberta regarding freehold mineral rights and mineral leases.
- Represents industry and government clients in defence of various civil claims relating to damages allegedly related to a hydro-electric project.
- A Canadian oil company in an arbitration over the terms of a settlement agreement
- Counsel to the Government of Manitoba in defence of a $90+ million claim alleging constitutional and contractual breaches
- A Canadian oil company in an arbitration relating to agreements for regulated utility assets
- Atrum Coal & Cabin Ridge in a dispute with the Government of Alberta following a change of law to prohibit coal exploration on Government lands.
- Suncor Energy Products Inc. in a judicial review application before the Ontario Divisional Court concerning alleged environmental cumulative effects in Sarnia and involving various allegations of Charter breaches relating to the harm or risk of harm from exposure to pollutants
- Equinor Canada Limited and Husky Oil Operations Limited regarding commercial matters related to the potential Bay du Nord offshore oil project
- A Canadian oil company in an arbitration over the terms of a settlement agreement
- The Attorney General of Manitoba as intervener in a statutory appeal regarding Manitoba Hydro’s commitments to an Indigenous group in relation to the Manitoba-Minnesota Transmission Project
- Province of Manitoba in all judicial reviews regarding duty to consult Indigenous communities
- NOVA Chemicals in a dispute with Dow Chemical arising from a joint venture ethylene production plant.
- Representing Kinder Morgan in all challenges to the federal and provincial approvals of the Trans Mountain Expansion including motions for leave to appeal, judicial review, stays and injunction motions at the Federal Court of Appeal and the British Columbia Supreme Court
- Acted for a major international E&P company in a $30 million dispute with a pipeline company, 2016/17 under the Arbitration Act of Alberta
- Defending TC Energy in an Ontario Superior Court action by the Aroland and Ginoogaming First Nations against the National Energy Board and Canada, alleging failure to consult in relation to the TCPL mainline
- Representing TC Energy in obtaining multiple injunction Orders enjoining blockades to resource projects, Alberta Court of Queen’s Bench, January 2017, February 2017, March 2017
- Ernst v. EnCana et al: Defending EnCana in a $11 million claim for damages by a landowner for alleged damages sustained due to “fracking” in oil and gas operations, Alberta Court of Queen’s Bench
- Represent the Terra Nova Project (offshore Newfoundland) in a royalty dispute with the Province of Newfoundland and Labrador
- Representing Nova Gas Transmission Inc. in the defence of a number of Federal Court challenges (leave and judicial review motions) to pipeline projects (2015-17)
- Represent Murphy Oil in a royalty dispute with the Province of Newfoundland and Labrador;
- Defending ConocoPhillips, Statoil, Anadarko, et al in a multi-million dollar dispute with GSI at the Court of Queen’s Bench of Alberta over seismic data use and fees
- Defending CNRL in Devon, Bard et al., v. CNRL, a commercial dispute in relation to interests and obligations associated with the multi-billion dollar Horizon Oil Sands operation
- Acted for Shell Canada Limited, in the defence of challenges to Shell’s proposed Jackpine Mine expansion at the Alberta Court of Appeal and the Federal Court of Canada. Reported Decisions: Métis Nation of Alberta Region 1 v. Joint Review Panel, 2012 ABCA 352 (leave to appeal to SCC, denied); and Adam v. Canada (Environment), 2014 FC 1185
- Represented a major international resource company in a confidential contractual dispute arbitrated through the London Court of International Arbitration, 2015 (“LCIA”)
- Acted for Kinder Morgan Canada Inc., in the successful defence of multiple challenges to the proposed Trans Mountain Pipeline expansion (the “Project”) at the National Energy Board (“NEB”), the Federal Court of Canada (“FCC”), the Federal Court of Appeal (“FCA”), and the British Columbia Supreme Court (“BCSC”), including:
- Coldwater Indian Band and Chief Harold Aljam et al v. Kinder Morgan Canada Inc. et al: the successful defence of a judicial review application and appeal at the FCC and FCA regarding a pipeline expropriation dispute. Kinder Morgan was also entirely successful in its cross-appeal at the FCA. Reported Decisions: Coldwater First Nation v. Canada (Indian Affairs and Northern Development), 2013 FC 1138; Coldwater Indian Band v. Canada (Indian Affairs and Northern Development), 2014 FCA 277
- Coldwater Indian Band and Chief Lee Spahan et al v. Kinder Morgan Canada Inc. et al: defending against a judicial review of a decision of the Minister of Aboriginal Affairs and Northern Development relating to the pipeline right of way through reserve land
- The City of Burnaby v. Trans Mountain: part of successful defence team in injunction motion brought by the City of Burnaby to stop Trans Mountain from accessing City lands for the purposes of conducting NEB mandated tests and surveys integral to the assessment of the Project. Reported Decision: Trans Mountain Pipeline ULC v. Gold, 2014 BCSC 2133
- National Energy Board Ruling No. 40 and Order Mo-122-2014 (October 23, 2014) – successfully brought a Notice of Constitutional Question dated September 26, 2014, and argued that the doctrines of interjurisdictional immunity and federal paramountcy rendered certain Burnaby City Bylaws inoperable where they are inconsistent with the Rulings of the NEB. The resulting Order granted Trans Mountain access to Burnaby Mountain to complete technical studies related to the Project and prevented Burnaby from blocking Trans Mountain from completing the work. Leave to appeal to the Federal Court of Appeal dismissed
- Leave to Appeal Motions Successfully Defended and Dismissed by Federal Court of Appeal:
- City of Vancouver v. NEB and Trans Mountain Pipeline ULC;
- L.D. Harvey v. NEB and Trans Mountain Pipeline ULC;
- City of Burnaby v. NEB and Trans Mountain Pipeline ULC; and
- Lynne M. Quarmby, Eric Doherty, Ruth Walmsley et al v. NEB, Attorney General of Canada, Trans Mountain Pipeline ULC et al
- Tsleil-Waututh Nation v. NEB, Trans Mountain Pipeline ULC and Attorney General, defending an appeal of a National Energy Board decision before the FCA, based on alleged breaches of the Canadian Environmental Assessment Act and the Crown’s constitutional duty to consult.
- Dr. Gary Smith, Andrée Stow et al v. Attorney General of Canada and Trans Mountain Pipeline ULC, motion for judicial reviewing a decision of the NEB
- Represented Nalcor Energy in the successful defence of multiple challenges to the proposed Muskrat Falls and Churchill Falls hydro-electric Project in Newfoundland and Labrador (the “Project”), at the at the Federal Court of Canada, the Federal Court of Appeal, the Supreme Court of Newfoundland & Labrador, the Court of Appeal of Newfoundland and Labrador, and the Supreme Court of Canada, including:
-
- Sierra Club, Grand River Keeper et al v. Nalcor Energy, Government of Canada et al.,: the dismissal of the judicial review of the Report of the Joint Review Panel in relation to the environmental assessment of the Project. Reported Decision: Grand Riverkeeper, Labrador Inc. v. Canada (Attorney General), 2012 FC 1520
- Conseil des Innus de Ekuanitshit v. Nalcor Energy, Government of Canada et al: the successful defence at the FCC, FCA and SCC of the: (i) judicial review of the Federal Government Response to the Report of the Joint Review Panel and ultimate approval of the Project; and (ii) claim that the Crown had failed to consult/accommodate in relation to the Project. Reported Decisions: Conseil des innus de Ekuanitshit c. Canada (Procureur general), 2013 FC 418; Council of the Innu of Ekuanitshit v. Canada (Attorney General), 2014 FCA 189; Conseil des Innus de Ekuanitshit v. Attorney General of Canada, in his capacity of legal member of the Queen’s Privy Council for Canada, et al., 2015 CanLII 10578
- Nunatsiavut Government v. Her Majesty in Right of Newfoundland and Labrador: Representing Nalcor Energy before the Supreme Court of Newfoundland and Labrador and the Federal Court of Canada in the: (i) judicial review of both provincial and federal permits in relation to the Project; and, (ii) claim that the Crowns failed to fulfil their duties to consult and accommodate. Reported Decision Nunatsiavut v. Newfoundland and Labrador (Department of Environment and Conservation), 2015 NLTD(G) 1
- Nunatsiavut Government v. Attorney General of Canada: the judicial review of a federal Department of Fisheries and Oceans authorization in relation to the Project and the claim that the Crown failed to fulfil its duty to consult. Reported Decision: Nunatsiavut v. Canada (Attorney General), 2015 FC 492
- NunatuKavut Community Council Inc. v. Attorney General of Canada: the judicial review of a federal Department of Fisheries and Oceans authorization in relation to the Project and the claim that the Crown failed to fulfil its duty to consult. FCC Decision Pending.
- Nalcor Energy v. NunatuKavut Community Council et al: represented Nalcor Energy before the Supreme Court of Newfoundland and Labrador in its injunction motion to enjoin protestors from their illegal blockade of a work site and interference with Nalcor’s lawfully permitted work in relation to its Lower Churchill Hydroelectric Generation Project. Reported Decision: Nalcor Energy v. NunatuKavut Community Council Inc., 2012 NLTD(G) 175 and NunatuKavut Community Council Inc. v. Nalcor Energy, 2014 NLCA 46
- NunatuKavut Community Council Inc. et al v. Nalcor Energy et al: successful defence of an injunction motion brought by the Nuntukavut Community Council to enjoin a regulatory process. Reported Decision: Nunatukavut Community Council Inc. v. Newfoundland and Labrador Hydro-Electric Corporation (Nalcor Energy), 2011 NLTD (G) 44
- Crew Energy v. Cenovus: defending Cenovus in a commercial dispute pertaining to a farm-out agreement and the expiry of oil and gas Leases. Reported Decision: Crew Energy v. Cenovus Energy Inc., 2012 ABQB 462;
- BG International in a LCIA dispute with Canadian Superior Energy Corp. in relation to an AIPN joint operating agreement pertaining to gas exploration and development in Trinidad and Tobago. The dispute involved multiple applications for Interim Relief including receivership and CCAA protection at the Court of Queen’s Bench and Court of Appeal of Alberta: (2009) 448 A.R. 24 (QB); 457 A.R. 38 (C.A.)
Latest Insights
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Osler Update Nov 8, 2024
Federal government announces constitutionally questionable oil and gas sector emissions cap
Utilizing a cap-and-trade system, the proposed regulations would require the sector to reduce emissions by 35% below 2019 emissions by 2030.
Read more
-
Webinar Aug 13, 2024
Q3 2024 Economic Update with Stephen Poloz
Despite recent interest rate cuts, softening job numbers have many questioning whether the Canadian economy is slowing toward a recession.
Read more -
Osler Update May 2, 2024
Amendments to Impact Assessment Act released – triage or major surgery?
The Canadian federal government has released draft amendments to the Impact Assessment Act responding to the October 2023 constitutional reference.
Read more -
Webinar Mar 27, 2024
Q1 2024 Economic Update with Stephen Poloz
What does 2024 have in store for the Canadian economy? Join us virtually for a first quarter economic update featuring Osler Special Advisor and...
Read more
Awards and Recognition
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Chambers Canada: Canada’s Leading Business Lawyers: Recognized in Litigation: General Commercial (Alberta) (Band 1); Aboriginal Law
- “…a very capable litigator … does a good job of moving matters forward.”
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The Canadian Legal Lexpert Directory: Recognized in Aboriginal Law (BC); Aboriginal Law (AB); Litigation – Corporate Commercial (AB); Energy (Oil & Gas) (BC); Energy (Oil & Gas) (AB); Litigation – Regulatory & Public Law (BC); Litigation – Regulatory & Public Law (AB)
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The Lexpert/American Lawyer Guide to the Leading 500 Lawyers in Canada: Recognized in Corporate Commercial Litigation
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Best Lawyers in Canada: Recognized in Aboriginal Law; Administrative and Public Law; Alternative Dispute Resolution; Appellate Practice; Bet-the-Company Litigation; Corporate and Commercial Litigation; Energy Law; Oil & Gas Law; “Lawyer of the Year”, Appellate Practice
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Legal 500: Recognized in Dispute Resolution; Aboriginal Law
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Who’s Who Legal: Recognized in Energy – Oil & Gas; Commercial Litigation; Canada – Energy; Canada – Commercial Litigation
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Benchmark Litigation Canada: Recognized as 2023 Energy/Resource Lawyer of the Year
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Benchmark Litigation Canada: Recognized in Aboriginal, Commercial, Energy (Litigation Star); Recognized in “Top 100 Women in Litigation” in Canada; 2020 Litigator of the Year: Energy/Resource Litigation – Canada
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Thomson Reuters: “Stand-out Lawyer”
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Women in Law: Under Maureen’s Leadership, the Osler Calgary Office was the first recipient of the Women in Law Leadership – Law Firm Award as the Alberta Firm that “best demonstrates leadership in fostering an inclusive environment for female lawyers;” Awarded Women in Law Leadership Award
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Province of Alberta: Named King’s Counsel, Province of Alberta
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Lexpert Special Edition: Recognized in Energy; Recognized in Litigation
Media Mentions
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Osler News Aug 28, 2024
Four Osler partners recognized in Benchmark Canada’s ‘Top 100 Women in Litigation’ in 2024
Osler congratulates partners Maureen Killoran, KC, Mary Buttery, KC, Laura Fric and Teresa Tomchak for their inclusion in the 11th edition of...
Read more -
Osler News May 10, 2024
Maureen Killoran, KC, named Energy/Resources Litigator of the Year at the 2024 Benchmark Litigation Canada Awards
Osler is proud to announce that National Co-Chair Maureen Killoran, KC, has once again been named the Energy/Resources Litigator of the Year at the...
Read more -
Osler News Jan 9, 2024
34 Osler lawyers recognized in 2024 Lexpert/American Lawyer Guide to Leading 500 Lawyers in Canada
Osler is pleased to announce that 34 of our lawyers have been recognized in the 2024 edition of the Lexpert/American Lawyer Guide to the Leading 500...
Read more -
Osler News Nov 23, 2023
23 Osler lawyers recognized in Lexpert Special Edition: Litigation 2023
23 Osler lawyers featured in the Lexpert Special Edition: Litigation 2023.
Read more
Speaking and Writing
Speaking Engagements
Lecturer/Instructor
- Advocates Society: Bench and Bar Series – Chair, Evidence that Wins, Calgary Spring 2015
- University of Notre Dame, Faculty of Law, South Bend, Indiana: Visiting Faculty Instructor, Intensive Trial Advocacy Training Program (2009, 2010, 2012);
- University of Calgary, Faculty of Law, lecturer: civil procedure; advocacy; professional negligence; and, remedies; Instructor at the Intensive Trial Advocacy Course (2006-2011);
- Legal Education Society of Alberta Intensive Trial Advocacy Course for Practitioners, Instructor 2007-2012; LESA Civil Litigation Course, 2010, Panel Chair, 2010; and Alberta Rules of Court Course, Conference Speaker, 2010.
Published Work
- Murky Waters: Emerging Trends in Aboriginal Consultation and Project Approval, CELF 2014 Jasper Research Seminar, June 12, 2014. Published in the Alberta Law Review Vol 52, No. 2 (December 2014) page 207.
- Federal Court of Canada Affirms Crown Consultation Process Following Environmental Assessment under CEAA 2012, Osler Update, December 17, 2014 (co-authored with Thomas Gelbman and Aditya Badami)
- Court Denies Challenge to NEB Jurisdiction over Access to Municipal Lands, Osler Alerts, December 12, 2014 (co-authored with Shawn Denstedt, QC, Heather Robertson and Jeremy Barretto)
- FCA Decision Sends Strong Message: Courts Will Not Interfere with Ongoing Administrative Proceedings, Osler Update, December 5, 2014 (co-authored with Thomas Gelbman)
- NEB Rules Federal Legislation Permits Trans Mountain Access to City of Burnaby Lands, Osler Update, October 27, 2014 (co-authored with Heather Robertson, Aditya Badami, Jeremy Barretto and Thomas McNerney)
- Court Dismisses Request That NEB Review Upstream and Downstream Effects of Pipeline, Osler Update, October 20, 2014 (co-authored with Shawn Denstedt, QC, Jeremy Barretto and Thomas McNerney)
- Energy, Mining and Aboriginal: Beginning with the End in Mind, Osler Guides, 2014 Litigation Report: Managing Risk, January 2014 (co-authored with Thomas Isaac)
- Risks and Risk Management in Project and Resource Development, Osler Guides, Capital Markets Report, January 2014 (co-authored with Thomas Isaac)
- Canada’s Supreme Court Requires Aboriginal Groups to Follow Statutory Process, Osler Update, May 16, 2013 (co-authored with Thomas Gelbman and Elizabeth Coyle)
- Law Matters, Practice Pointers Articles:
- Communicating with Testifying Experts: Cautionary Tales, Fall 2014 Edition (co-authored with Anne Kirker, QC)
- Settlement Privilege – Clearly Contracting Out, Summer 2014 Edition (co-authored with Anne Kirker, QC and Elizabeth Coyle)
- Fiduciary Duties – Clarifying the Confusion, Spring 2014 Edition (co-authored with Anne Kirker, QC and Clarissa Pearce)
- Gowning and Other Unwritten Customs, Winter 2013-2014 Edition (co-authored with Anne Kirker, QC)
Credentials
Education
- University of Calgary, LL.B.
- Queen’s University, B.A. (Hons.)
Languages
- English
Professional Affiliations
- Law Societies of Alberta, Ontario and British Columbia
- Canadian Energy Law Foundation
- Rocky Mountain Mineral Law Foundation
