
Overview
Joanna Rosengarten is a partner in the Environmental Group at Goodmans.
Joanna has a wealth of knowledge and expertise across the full spectrum of environmental legal matters, including evaluating and managing environmental legal risk in the context of complex corporate transactions and advising on environmental assessment, permitting and liability in large project development. Manufacturing, chemical, mining, infrastructure and brownfield redevelopment projects are significant areas of focus for Joanna, as are clean-tech and energy projects. She has advised developers, acquirers and investors in connection with renewable, nuclear and conventional energy assets and transmission facilities. She also regularly represents and advises clients on compliance with emerging environmental legislation, defence of environmental prosecutions and government orders, remediation of contaminated sites and product stewardship.
Joanna also practices in the area of climate change, ESG, and energy law. She provides strategic advice to clients on greenhouse gas reporting compliance, obligations arising under federal and provincial greenhouse gas legislation, carbon offset credits, strategies and risks in meeting net-zero commitments and broader ESG due diligence matters.
Joanna has been recognized as a leading environmental lawyer by Chambers Global, Chambers Canada, and The Best Lawyers in Canada. She is also ranked in the areas of Environmental Law and Environmental, Social & Governance (ESG) by The Canadian Legal Lexpert Directory, and has been featured in the Lexpert Special Edition: Infrastructure and the Lexpert Special Edition: Energy and Mining.
Awards & Recognition
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Chambers Global Recognized, Environment 2025
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Chambers Canada Recognized, Environment 2025
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The Canadian Legal Lexpert Directory Recognized, Environmental Law, Environmental, Social & Governance (ESG) 2025
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Best Lawyers in Canada Recognized, Environmental Law 2025
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Chambers Global Recognized, Environment 2024
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Chambers Canada Recognized, Environment 2024
Credentials
Professional Involvement
Credentials
- Queen's University, B.Sc.
- University of Toronto, J.D.
Professional Affiliations
- Ontario Bar Association
- Law Society of Ontario
- Canadian Bar Association
Call to Bar
- 2004 Ontario
Insights
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Litigation and Dispute Resolution
Climate Change Suits Against the Government: Mathur v. Ontario Appeal Decision
The Court of Appeal for Ontario has released its appeal decision in Mathur v. Ontario involving a lawsuit by youth applicants challenging as inadequate Ontario’s legislated targets and plans for… -
Competition and Foreign Investment
Canada Expands Misleading Advertising Rules and Creates New Private Litigation for Misleading Advertising
The Government of Canada has proposed legislation to amend the Competition Act (the “Act”) to, among other things, (i) expand the scope of what constitutes misleading advertising, and (ii) permit… -
Environmental
Supreme Court of Canada Holds Designated Projects Scheme Under the Impact Assessment Act is Unconstitutional
On October 13, 2023, the Supreme Court of Canada (SCC) released its advisory decision regarding the constitutionality of the federal government’s environmental assessment (EA) regime in Reference re… -
Environmental
Ontario Amends the Mining Act to Streamline Closure Planning and Mineral Recovery Requirements
On May 18, 2023, the Province of Ontario granted Royal Assent to various amendments to the Mining Act through Bill 71, the Building More Mines Act, 2023 (“Bill 71”). The government’s stated purpose of… -
Litigation and Dispute Resolution
Limits of Climate Change Suits Against the Government: Mathur v. Ontario Decision
The Superior Court of Justice has now released its decision in Mathur v. Ontario, a case we wrote about earlier this year and which is now a further example of an unsuccessful claim against a…
News & Events
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Aging and Health Care
The Canadian Legal Lexpert Directory 2025 Once Again Recognizes Goodmans
We are proud to announce Goodmans LLP continues to be recognized in the 2025 edition of The Canadian Legal Lexpert Directory.Congratulations to the 96 Goodmans lawyers recognized as leaders across… -
Banking and Financial Services
Chambers and Partners Once Again Honours Goodmans with Global Recognition
We are proud to announce Goodmans LLP continues to receive top-tier recognition from Chambers and Partners in the Chambers Global 2025 Guide released today.Recognition from Chambers and Partners is… -
Mergers and Acquisitions
Chambers and Partners Once Again Honours Goodmans with Top-Tier Recognition
We are delighted to announce Goodmans LLP continues to receive top-tier recognition from Chambers and Partners in the Chambers Canada 2025 Guide.Recognition from Chambers and Partners is based on…