Expertise
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Practice Areas:
- Bar Admissions:
- Education:
- University of Toronto (2007) JD
- McGill University (2003) B.Eng. (Mechanical Engineering)
Details
- Bio
- Cases
- Associations
- Blog Posts
- News & Media
- Publications & Presentations
- Recognition
Andrew Parley
"Andrew is a compelling and capable advocate with a reputation and track record that speaks for itself but he is also a brilliant strategist in a broader sense, embodying the wisdom of picking your battles while avoiding others." — Client Testimonial
Andrew's practice spans a diverse range of industries from energy to construction and infrastructure to securities and finance. Focusing on commercial litigation matters, he represents individuals, and businesses of all sizes. As a mechanical engineer by training, Andrew has a strong understanding of engineering and construction project management.
Some of the clients that Andrew has represented include Crosslinx Transit Solutions, Aecon, British Energy, 407 ETR, the Gupta Group, McDonalds Restaurants of Canada Limited, BMO Nesbitt Burns, SNC Lavalin Inc., and the Government of Canada. He has appeared before the Ontario Superior Court, the Ontario Divisional Court, the Ontario Court of Appeal, the Supreme Court of Canada as well as various administrative tribunals. Andrew has also been involved in several private, local and international arbitrations.
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Counsel to a general contractor in an arbitration relating to the construction of a major Canadian transmission line.
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Aecon Mining Construction Services v K+S Potash Canada GP
Counsel to Aecon in complex litigation involving multiple parties and claims, in respect of the Legacy potash mine and production facility in Saskatchewan.
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Counsel to a general contractor in respect of a complex mediation/prospective arbitration process regarding a subway extension project.
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2373480 Ontario Inc v Digreen Homes Vaughan Inc
Counsel to a land developer and home builder in connection with a dispute relating to a large residential community development.
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Tiger Calcium Services Inc v Clark Sazwan
Counsel to the Plaintiff, Parallel49 in an Alberta action relating to alleged misrepresentations during the purchase and sale of a calcium chloride plant.
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Icona Hospitality v 2748355 Canada Inc et al
Counsel to a major real estate development company on appeal in a dispute relating to a large residential development and the interpretation of a restrictive covenant agreement.
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Rovi Guides and TiVo Solutions v Bell Canada
Counsel to TiVo Solutions and its subsidiary Rovi Guides in a patent infringement action, involving patents relating to interactive television program guides, DVR technology, and related technologies.
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North Elgin Centre Inc v McDonald’s Restaurants of Canada
Counsel to the Appellant, McDonald’s, on a successful appeal at the Ontario Court of Appeal over the renewal of a commercial lease.
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Counsel for Mayor of Caledon in an application brought pursuant to the Municipal Conflict of Interest Act, which resulted in all allegations being dismissed.
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The Regional Municipality of Peel v MMM Group Limited
Counsel to SNC Lavalin in connection with a dispute regarding the construction of a water main in Peel Region.
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The Advocates' Society - Chair of the Construction Law Practice Group
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Canadian Bar Association
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Ontario Bar Association
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Pro Bono Law Ontario
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Law Help Ontario
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Ontario Court of Appeal Restricts Municipality’s Use of Interim Control By-Laws
In a recent decision, Hummel Properties Inc v Niagara-on-the-Lake (Town), the Ontario Court of Appeal affirmed that the Town of Niagara-on-the-Lake’s enactment of an interim control by-law (“ICBL”) was illegal. The decision, summarized below, has important implications for municipalities, developers, and builders across Ontario.
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Class actions against investment advisors? Don’t bet on it
Class actions are common in the financial services sector. The relatively low bar for certification of such claims as class proceedings means that many such claims are certified. Yet certification is by no means automatic: where the litigation will not be significantly advanced through the resolution of common issues, courts will typically be reluctant to certify an action as a class proceeding.
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Partial Summary Judgement: a tool used to simplify
In Bisquip Leasing Corporation v Coco Paving Inc, Bisquip Leasing Corporation [“Bishop”] brought a motion for summary judgment against Coco Paving Inc. [“Coco”] for unpaid invoices on various projects. Coco asserted a counterclaim against Bishop arising out of “deficient work” and an incident in which a gas line was allegedly struck by Bishop during excavation.
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Settlement in multi-party litigation is to be encouraged, as confirmed by the Supreme Court of Canada in Sable Offshore Energy Inc v Ameron International Corp. One common mechanism for achieving settlements in multi-party litigation is through what is commonly known as a Pierringer agreement. A Pierringer agreement allows the settling defendants to be released from the lawsuit with the non-settling defendants left exposed to their proportionate share of liability. Despite their popularity, the impact of a Pierringer Agreement on the remaining defendants and the continuing litigation is not always clear.
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Can an employee refuse reinstatement and still claim damages for wrongful dismissal?
It is well established that an employee who has been dismissed from his or her position has a duty to mitigate their damages by seeking reemployment. The central question is whether a reasonable person in the employee's position would have accepted the offer of employment.
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Bankruptcy won't shield debtor from Court's contempt powers
A fundamental purpose of the Bankruptcy and Insolvency Act, R.S.C. 1985, c. B-3 (the "Act") is the financial rehabilitation of the "honest but unfortunate" debtor. One way that this purpose is achieved is through the automatic stay of proceedings granted under section 69(1)(a) of the Act.
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2025 Lexpert Directory Highlights Lenczner Slaght’s Excellence in Advocacy
Peers and senior members of the legal profession across the country continue to recognize the depth and breadth of Canada’s leading litigation firm in the latest 2025 Canadian Legal Lexpert Directory.
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Lenczner Slaght Lawyers Recognized as Canada’s Leading Litigators
Following an in-depth peer review process across the legal profession, 21 Lenczner Slaght lawyers have been recognized in the 2024 Lexpert Special Edition: Canada’s Leading Litigation Lawyers guide for their extensive courtroom experience and subject-matter expertise.
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Chambers Canada Recognizes Lenczner Slaght’s Deep Bench of Expert Litigators
Canada’s leading litigation firm continues to advance their position in the latest edition of the world-renowned directory.
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Lenczner Slaght Litigators Recognized as the Best Lawyers in Canada
In the 2025 edition of Best Lawyers in Canada, Lenczner Slaght is proud to receive 168 total rankings, with 45 of our expert litigators recognized for their expertise across 25 practice areas.
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Lenczner Slaght Litigators Elected to The Advocates’ Society’s Leadership
We are pleased to announce that Sahar Talebi, Aoife Quinn, Aaron Grossman, Christopher Yung, Paul-Erik Veel, and Andrew Parley will be serving prominent leadership positions at The Advocates’ Society, a preeminent organization dedicated to promoting effective advocacy and access to justice.
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The 2024 Lexpert Directory Recognizes Lenczner Slaght’s Litigation Excellence
Lenczner Slaght’s litigators continue to be recognized by their peers as the foremost practitioners in their fields.
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Lexpert Recognizes Lenczner Slaght’s Litigation Strength
An increasing number of our expert litigators continue to be recognized as the foremost lawyers in their fields by peers and senior members of the legal profession.
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Resolving Construction Disputes Mid-Project
In Lexpert’s Special Edition on Litigation, Andrew Parley was interviewed for an article feature on construction disputes. Andrew provided his expert insights on the use of mediation mid-project in construction matters to keep projects on track when disputes arise.
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Lenczner Slaght Litigators Recognized as Best Lawyers in Canada
In the latest edition of Best Lawyers in Canada, 41 of our expert litigators are recognized for their expertise across 24 practice areas. The following lawyers have also been recognized as “Lawyer of the Year” for receiving the highest overall peer-feedback in their practice areas in Toronto.
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Lenczner Slaght Litigators to Serve on The Advocates’ Society’s Leadership
We are pleased to announce that Christopher Yung, Paul-Erik Veel, Andrew Parley, Anne Posno, Lidiya Yermakova, and Brendan Morrison will be serving prominent executive and committee positions at The Advocates’ Society, a preeminent organization dedicated to promoting effective advocacy and access to justice.
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Digital Twins in Ontario’s Rail Projects: What Does Good Look Like
Andrew Parley was invited to speak at FTI Consulting’s panel discussion on Digital Twins in Ontario’s Rail Projects. He offered a legal perspective on the use of digital twin technology in rail infrastructure, addressing the complexities of the current project delivery models and the progressive contracts used to deliver Ontario’s rail projects. The session also explored the benefits, risks, and best practices involved in making strategic technology investments that deliver non-negotiable enhancements to structures, systems, and processes.
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2024 Snapshot: Through the Lens of Lenczner Slaght
Lenczner Slaght launches our 2024 Snapshot, which highlights the most significant developments, decisions, and trends in litigation from the past year across 20 areas of expertise. Reflect on 2024 and look ahead to 2025 through the lens of our expert litigators.
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Construction Law Reception & Fireside Chat
Andrew Parley looked forward to hosting the Construction Law Reception & Fireside Chat program with The Advocates' Society's Construction Law Practice Group. The program featured a special fireside chat with our very own Ian Binnie, where he shared his valuable experience and insights.
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2023 Snapshot: Through the Lens of Lenczner Slaght
Lenczner Slaght launches our 2023 Snapshot, a look at the most significant developments, decisions, business takeaways, and trends in litigation from the last year, across 15 practice areas. Revisit 2023 and look ahead to 2024 through the lens of our expert litigators.
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Lessons From Canada and the UK: Lien Reform and Adjudication
Andrew Parley moderated The Advocates' Society's Construction Law program "Lessons From Canada and the UK: Lien Reform and Adjudication" on everything you need to know about the construction legislative reforms coming to jurisdictions across Canada.
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Stop the Clock: Preserving Rights and Relationships Through Tolling Agreements
Andrew Parley and Drew Black co-authored the article "Stop the Clock: Preserving Rights and Relationships Through Tolling Agreements" which was published by On-Site Magazine. In this article, Andrew and Drew discuss the practical, cost-conscious solution of implementing a tolling agreement to defer a dispute when it arises.
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Construction Law Update: Legal Project Management
Andrew Parley was invited to speak at Canadian Lawyer's Construction Law Update on Legal Project Management. The panel will offer practical tips and strategies for construction lawyers on how to proactively manage a construction project from inception to completion.
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Stop or Go: The Role of Mandatory and Prohibitive Injunctions in Construction Projects
Andrew Parley authored the article "Stop or Go: The Role of Mandatory and Prohibitive Injunctions in Construction Projects" which was published by On-Site Magazine. In this article, Andrew discusses the legal remedies available to keep a construction project moving.
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Maximizing the Expert Witness in Civil Litigation
Andrew Parley shared his expertise at the OBA's Civil Litigation program on Maximizing the Expert Witness in Civil Litigation. Andrew presented on the panel "Dealing with Experts Remotely – the Virtual Trial."
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Managing the Cost, Risk, and Disruption of E-Discovery in Complex Litigation
Andrew Parley moderated the CCCA webinar on complex e-discovery projects. He shared his expertise on the best practices for successfully managing these projects, which can be long, complicated, expensive, and disruptive to the business.
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Benchmark Canada (2018-2025)
Litigation Star – Commercial, Construction, Energy, Securities
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Benchmark Litigation (2017-2019)
Under 40 Hotlist
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Best Lawyers in Canada (2020-2025)
Health Care Law, Medical Negligence
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Canadian Legal Lexpert® Directory (2020-2025)
Commercial Arbitration, Construction Law, Litigation - Corporate Commercial, Medical Negligence, Professional Liability
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Chambers Canada (2025)
Construction
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Lexpert Special Edition: Canada's Leading Infrastructure Lawyers (2023-2025)
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Lexpert Special Edition: Canada's Leading Litigation Lawyers (2023-2024)