Log in or register
Share on LinkedInShare on LinkedIn

ARTICLE · 03 DECEMBER 2025

Ontario Courts Clarify OSC Investigative Powers: Key Takeaways For Market Participants

Cassels
Cassels
Contributor
Cassels

Cassels

Cassels Brock & Blackwell LLP is a Canadian law firm focused on serving the transaction, advocacy,...

View firm profile
Explore more from Cassels

Recent Ontario appellate decisions have provided important guidance on the permissible scope of investigative summons authorized under the Securities Act...

CanadaLitigation, Mediation & Arbitration
Lara Jackson
Lara Jackson
Saad Rajper
Saad Rajper
Rheanna Geisel
Rheanna Geisel
Author LinkedIn connections

Recent Ontario appellate decisions have provided important guidance on the permissible scope of investigative summons authorized under the Securities Act1 and the subsequent use of transcripts of compelled interviews pursuant to these summonses. In Binance Holdings Limited v Ontario Securities Commission,2 the Court of Appeal granted a Charter3 challenge and set aside a summons that was "staggering in its breadth," a decision that may significantly impact future Ontario Securities Commission (OSC) regulatory investigations. In Hogg v Chief Executive Officer,4 the Divisional Court confirmed that compelled testimony can be used in a Capital Markets Tribunal (Tribunal) hearing against a respondent who does not testify, notwithstanding section 9 of the Evidence Act,5 effectively resolving uncertainty caused by the Tribunal's decision earlier this year in TeknoScan Systems Inc (Re).6

We operate a free-to-view policy, asking only that you register in order to read all of our content. Please login or register to view the rest of this article.

Register for freeORLog in

The content of this article is intended to provide a general guide to the subject matter. Specialist advice should be sought about your specific circumstances.

View source

Related Articles

Legal Intelligence Newsletters: sign up for the latest legal and regulatory news on your chosen topics

Read more about

Related Comparative Guides

See more popular content from

Article

Ontario Court Bifurcates Class Action As Practical Approach To Onerous Discovery Demands

An Ontario court granted a motion to bifurcate liability and damages stages in a class action alleging $500 million in hidden fees, finding that extensive documentary production requests were disproportionate and not relevant to determining liability. The decision addresses proportionality concerns in class actions where defendants face onerous discovery demands spanning millions of transactions over a decade.
CanadaLitigation, Mediation & Arbitration
Bennett Jones LLP
Bennett Jones LLP
Article

The Coldcard Exploit: Why Victims May Have Two Routes To Recovery

A five-year-old firmware defect in Coldcard hardware wallets has enabled attackers to systematically drain an estimated $116 million in Bitcoin from over 5,200 victims since July 2026. This unprecedented exploit raises critical questions about manufacturer liability and creates two distinct legal pathways for recovery: blockchain tracing against the perpetrators and potential litigation against Canadian manufacturer Coinkite for product defects that undermined the fundamental security promise of devices mar
CanadaLitigation, Mediation & Arbitration
WeirFoulds LLP
WeirFoulds LLP
Article

Ontario’s New AI Rules: What Lawyers And Expert Witnesses Need To Know

Ontario's Rules of Civil Procedure now include strict amendments requiring lawyers and expert witnesses to certify the authenticity of every citation and authority used in court materials. These new anti-hallucination provisions impose significant penalties for presenting AI-generated fabricated authorities, fundamentally shifting accountability for artificial intelligence use in litigation.
CanadaLitigation, Mediation & Arbitration
Soloway Wright
Soloway Wright
Article

Plaintiffs Awarded A Total Of $800,000 In Damages For Defamation (Murdy v. Barrette)

A Canadian court awarded $800,000 in damages to a couple defamed by serious false allegations of sexual assault and criminal misconduct spread through social media. The case examines how factors like the severity of accusations, use of social media platforms, and a defendant's failure to mount a defense can dramatically escalate defamation damages beyond typical awards.
CanadaLitigation, Mediation & Arbitration
Gardiner Roberts LLP
Gardiner Roberts LLP
Article

Not Beyond Reproach: Alberta Court Confirms Jurisdiction Over Alberta Energy Regulator

The Alberta Court of King's Bench has confirmed its jurisdiction to grant injunctive relief against the Alberta Energy Regulator despite a broadly worded statutory privative clause. This landmark decision, arising from Sumerian Oil & Gas's application to stay a suspension order affecting approximately 900 wells, represents one of the first considerations of the Supreme Court of Canada's recent Democracy Watch ruling and may significantly impact future disputes involving AER orders.
CanadaLitigation, Mediation & Arbitration
MLT Aikins LLP
MLT Aikins LLP
Article

Canada Announces New Counter-Tariffs And Support Measures Following US Tariff Actions

Canada has announced sweeping counter-tariffs ranging from 15% to 50% on approximately C$27.6 billion of US imports, effective September 8, 2026, in direct response to President Trump's 50% Section 338 tariffs on Canadian goods. The measures target key sectors including steel, aluminum, dairy, appliances, and electronics, while the federal government simultaneously rolls out C$7.5 billion in support for affected businesses and workers. Understanding whether products qualify as US goods under Canada's markin
CanadaInternational Law
Cassels
Cassels
Article

WorkSafeBC Proposes Changes To Laws Regarding Workplace Harassment And Violence

WorkSafeBC is proposing significant amendments to British Columbia's Occupational Health and Safety Regulation that would fundamentally reshape how employers address workplace harassment, violence, and psychological health. The proposed changes introduce expanded definitions, new prevention program requirements, and obligations to identify and control psychosocial hazards. These amendments could require most B.C. employers to substantially revise their existing workplace policies and procedures.
CanadaEmployment and HR
Cassels
Cassels
Article

Cassels On Competition: October 2026

More particularly, the Plaintiff had argued that the drip pricing provision in subsection 52(1.3) of the Competition Act requires “all-inclusive pricing” and forbids all forms of “fragmented or segmented pricing,” and that Ticketmaster’s partitioned price representations are thus prohibited as a criminal conduct and amount to false or misleading representations covered by the criminal misleading advertising provision in section 52
CanadaAntitrust/Competition Law
Cassels
Cassels
Article

Bill C-39: A New Era For Canadian Mining Project Approvals?

The Canadian government has introduced Bill C-39, the Building Canada Strong Act, proposing sweeping reforms to federal project approval processes that could fundamentally reshape mining project development and financing. The legislation aims to consolidate multiple federal reviews into a single coordinated process with a one-year decision timeline, while maintaining environmental protections and Indigenous consultation requirements.
CanadaGovernment, Public Sector
Cassels
Cassels
Article

New Can-Do CANDU Energy: Bill C-39 Looks To Reduce Regulatory Burdens And Streamline The Development Of Nuclear Projects In Canada

Bill C-39, the Building Canada Strong Act, proposes significant reforms to Canada's nuclear regulatory framework by restoring impact assessment authority to the Canadian Nuclear Safety Commission and introducing streamlined approval processes. The legislation aims to reduce regulatory duplication, permit preliminary construction activities before final project approval, and establish more constrained timelines for nuclear project assessments. Will these measures be sufficient to support the ambitious growth
CanadaEnergy and Natural Resources
Cassels
Cassels
Article

Substance Over Form: Ontario Court Of Appeal Revisits Employee Classification In Pringle v. Zenova Group PLC

The Ontario Court of Appeal has ruled that contractual labels cannot override the true nature of working relationships, even when workers choose independent contractor status for tax benefits. This decision examines how shareholding in a company intersects with employment status and whether foreign forum selection clauses can prevent Ontario workers from accessing provincial employment protections.
CanadaEmployment and HR
Cassels
Cassels