Ghahhary Thomas LLP

Experienced Judicial Review Lawyers

Ghahhary Thomas LLP provides strategic legal representation in judicial review applications and statutory appeals involving administrative decision-makers and public authorities. Our lawyers act as judicial review lawyers advising individuals, businesses, institutions, and public bodies challenging or defending administrative decisions.

Judicial review proceedings examine whether a government decision-maker acted lawfully, fairly, and within the scope of its statutory authority. These proceedings frequently involve complex questions of administrative law, procedural fairness, and statutory interpretation.

Our team combines strong appellate advocacy with deep expertise in administrative and public law.

Representation in Judicial Reviews

We represent clients seeking to challenge or defend decisions made by administrative tribunals, regulators, and public authorities, including:

• Judicial review applications in provincial and federal courts
• Challenges to administrative tribunal decisions
• Review of regulatory and governmental decisions
• Applications involving procedural fairness
• Jurisdictional challenges involving statutory authority
• Litigation involving administrative law principles

Our lawyers provide strategic representation from the earliest stages of a dispute through to final judicial determination.

Statutory Appeals & Tribunal Proceedings

Many administrative decisions may also be subject to statutory appeals to courts or appellate tribunals.

Our statutory appeal lawyers advise on matters involving:

• Appeals from administrative tribunals
• Tribunal appeal proceedings before courts
• Interpretation of statutory decision-making authority
• Errors of law or jurisdiction by administrative bodies
• Appeals from regulatory enforcement decisions
• Strategic appellate advocacy in administrative law matters

We assist clients in developing effective appellate strategies in complex tribunal and regulatory disputes.

Administrative Law Litigation

Judicial reviews and tribunal appeals often involve complex legal questions concerning administrative decision-making and statutory interpretation.

Our advocacy includes:

• Preparing and arguing judicial review applications
• Representing clients in statutory appeal proceedings
• Strategic motion practice and procedural applications
• Evidence preparation and administrative records
• Advocacy before appellate and review courts

We work closely with clients to ensure that administrative law challenges are pursued with clear strategic direction.

Strategic Counsel in Administrative Law Matters

Administrative law disputes often involve broader implications beyond the legal proceeding itself, including:

• Regulatory compliance and governance considerations
• Institutional and operational impacts
• Government and regulatory relationships
• Long-term legal and policy implications

Our team provides strategic advice that reflects these realities while advancing our clients’ legal objectives.

Why Clients Engage Ghahhary Thomas LLP

Clients seeking judicial review or statutory appeals engage our firm because we offer:

• Strong appellate and administrative law advocacy
• Strategic representation in complex public law disputes
• Deep understanding of tribunal and regulatory frameworks
• Experience advising businesses, institutions, and public bodies
• Discretion and professionalism in sensitive matters

Our lawyers approach judicial review proceedings with precision, discipline, and rigorous legal analysis. Our partner, Leila Ghahhary, is ranked as a leading lawyer in Litigation: Administrative & Public Law in Ontario by Chambers Canada.

Experienced Banking Litigation Lawyers

Ghahhary Thomas LLP represents banks, financial institutions, lenders, and financial professionals in complex financial services litigation. Our lawyers act as banking litigation lawyers advising clients involved in disputes arising from lending relationships, financial transactions, and regulatory obligations.

Disputes involving financial institutions often involve complex contractual frameworks, regulatory requirements, and significant financial exposure. Our team provides strategic legal representation designed to protect our clients’ interests while navigating the complexities of financial services litigation.

We combine strong commercial litigation advocacy with a deep understanding of banking and financial regulatory environments.

Representation in Financial Services Disputes

We represent financial institutions and market participants in a wide range of disputes involving banking and financial services, including:

• Lending and credit facility disputes
• Enforcement of loan agreements and security interests
• Banking negligence and professional liability claims
• Disputes involving financial transactions
• Commercial lending and borrower disputes
• Litigation involving financial institutions and clients

These disputes often arise from complex financing arrangements, contractual disagreements, or regulatory compliance issues.

Our lawyers provide strategic representation from the early stages of a dispute through litigation and resolution.

Banking & Lending Disputes

Financial institutions regularly encounter disputes relating to lending arrangements and credit relationships.

Our banking litigation lawyers advise on matters involving:

• Enforcement of loan agreements and guarantees
• Priority disputes involving secured creditors
• Disputes over security enforcement
• Allegations of lender liability
• Breach of financing agreements
• Litigation involving commercial lending transactions

We assist financial institutions and lenders in protecting their contractual rights while managing litigation risk.

Complex Financial Litigation

Financial services disputes frequently involve multi-party litigation, complex documentation, and significant financial stakes.

Our advocacy includes:

• Representation in complex financial litigation
• Strategic motion practice and procedural applications
• Evidence gathering and discovery processes
• Trial advocacy in commercial disputes
• Negotiation of settlements and dispute resolution

We work closely with our clients to develop litigation strategies that align with their legal and commercial objectives.

Strategic Counsel in Financial Services Litigation

Banking and financial disputes often involve broader considerations beyond the immediate legal claim, including:

• Financial risk exposure
• Regulatory and compliance considerations
• Reputational and institutional concerns
• Long-term commercial relationships

Our team provides strategic advice that reflects these realities while advancing our clients’ legal and commercial objectives.

Why Clients Engage Ghahhary Thomas LLP

Clients involved in financial services disputes engage our firm because we offer:

• Strong commercial and financial litigation experience
• Strategic representation in complex banking disputes
• Deep understanding of financial services regulation
• Experience advising financial institutions and lenders
• Discretion and professionalism in sensitive matters

Our lawyers approach financial services litigation with precision, discipline, and a focus on protecting our clients’ financial and legal interests.

Our firm has been repeatedly recognized by Best Law Firms as a leading Corporate & Commercial Litigation practice in Toronto and is ranked as a Recommended Firm by Benchmark Litigation Canada. Our partner, Dan Thomas, is ranked as a leading Corporate & Commercial Litigation lawyer by The Best Lawyers in Canada.

Experienced Securities Class Action Lawyers

Ghahhary Thomas LLP provides strategic defence for companies, directors, officers, and financial institutions facing securities class actions in Canada. Our lawyers act as securities class action lawyers representing clients in complex litigation involving secondary market misrepresentation, disclosure obligations, and alleged securities law violations.

We defend public issuers, investment professionals, and corporate leadership teams in high-stakes litigation that can carry significant financial, regulatory, and reputational consequences.

Our team combines deep securities law expertise with strong litigation advocacy. With experience in complex commercial litigation and securities regulatory matters, we provide disciplined legal strategy in securities class action defence.

Defence in Securities Class Actions

We represent clients in securities class action litigation involving allegations such as:

• Secondary market misrepresentation claims
• Misleading public disclosure
• Failure to disclose material information
• Alleged breaches of securities legislation
• Market disclosure and reporting violations
• Shareholder claims arising from stock price declines

These claims often arise following market events, regulatory investigations, or significant corporate disclosures. Our lawyers provide strategic defence at every stage of the litigation process.

Secondary Market Misrepresentation Claims

Canadian securities legislation permits investors to pursue claims for alleged misrepresentations in public disclosure without needing to prove reliance in the traditional sense.

Our securities class action lawyers advise on matters involving:

• Alleged misstatements in public filings
• Earnings disclosures and financial reporting
• Continuous disclosure obligations
• Forward-looking statements and guidance
• Risk disclosure and market communications
• Leave motions required to advance statutory securities claims

We assist clients in developing effective defence strategies in these technically complex claims.

Class Action Litigation & Court Proceedings

Securities class actions involve multi-stage litigation that may include certification proceedings, complex discovery processes, and extensive expert evidence.

Our advocacy includes:

• Defending certification motions in class action proceedings
• Responding to statutory leave motions
• Strategic motion practice and evidentiary challenges
• Defence during discovery and trial
• Negotiation of settlements where appropriate

We work closely with clients to manage litigation risk while maintaining clear strategic direction throughout the proceedings.

Strategic Counsel in Securities Litigation

The potential repercussions of sSecurities class actions frequently extend beyond the courtroom. They often involve broader consequences including:

• Parallel regulatory investigations
• Corporate governance implications
• Market reputation and investor confidence
• Financial and insurance considerations

Our team provides strategic counsel that accounts for these broader realities while advancing our clients’ legal and business objectives.

Why Clients Engage Ghahhary Thomas LLP

Clients facing securities class actions engage our firm because we offer:

• Strong commercial litigation and securities law expertise
• Strategic defence in complex class action proceedings
• Experience representing corporate leadership and financial institutions
• Clear guidance in technically complex disclosure disputes
• Discretion and professionalism in high-profile matters

Our lawyers approach securities litigation with precision, discipline, and strategic clarity.

Our firm has been repeatedly recognized by Best Law Firms as a leading Corporate & Commercial Litigation practice in Toronto and is ranked as a Recommended Firm by Benchmark Litigation Canada. Our partner, Dan Thomas, is ranked as a leading Corporate & Commercial Litigation lawyer by The Best Lawyers in Canada.

Experienced Breach of Contract Lawyers

Ghahhary Thomas LLP represents businesses, executives, and commercial stakeholders in complex contract and commercial disputes. Our lawyers act as breach of contract lawyers handling litigation involving contractual breaches, commercial conflicts, and business interruption claims.

Commercial relationships often involve complex agreements and significant financial stakes. When disputes arise, businesses require strategic legal representation that protects their commercial interests while resolving disputes efficiently.

Our team combines strong commercial litigation advocacy with a deep understanding of contractual relationships and corporate operations.

Representation in Contract & Commercial Disputes

We represent clients in a wide range of contract and business disputes, including:

• Breach of contract claims
• Commercial agreement disputes
• Misrepresentation and fraudulent inducement
• Business tort claims
• Disputes involving supply, service, and distribution agreements
• Contractual interpretation and enforcement disputes

These matters frequently arise in the context of commercial transactions, strategic partnerships, and long-term business relationships.

Our lawyers provide strategic representation at every stage of a dispute, from early negotiations through formal litigation.

Business Torts & Misrepresentation Claims

Commercial disputes often involve allegations that extend beyond contractual obligations and into tort-based claims.

Our lawyers advise clients on matters involving:

• Negligent or fraudulent misrepresentation
• Breach of fiduciary duty in commercial relationships
• Interference with contractual relations
• Unlawful competition and commercial wrongdoing
• Claims arising from misleading business representations
• Disputes involving corporate and business conduct

We help clients evaluate potential claims and develop effective litigation strategies in complex commercial disputes.

Commercial Litigation & Court Proceedings

Contract disputes frequently lead to formal litigation when parties are unable to resolve disagreements through negotiation.

Our advocacy includes:

• Initiating or defending breach of contract lawsuits
• Strategic motion practice and procedural applications
• Evidence gathering and discovery processes
• Trial advocacy in commercial litigation
• Negotiation of settlements and dispute resolution

We work closely with clients to manage litigation risk while maintaining a clear strategic approach throughout the proceedings.

Strategic Counsel in Commercial Disputes

Contract and commercial disputes often involve broader considerations beyond the legal proceeding itself, including:

• Business continuity and operational stability
• Financial exposure and risk management
• Corporate reputation and stakeholder relationships
• Long-term contractual and commercial strategy

Our team provides strategic advice that accounts for these realities while advancing our clients’ legal and commercial objectives.

Why Clients Engage Ghahhary Thomas LLP

Clients facing contract and commercial disputes engage our firm because we offer:

• Strong commercial litigation experience
• Strategic representation in complex business disputes
• Deep understanding of contractual relationships
• Experience advising businesses and corporate leadership
• Discretion and professionalism in sensitive matters

Our lawyers approach commercial disputes with precision, discipline, and a focus on protecting our clients’ business interests. Our firm is ranked by Benchmark Litigation Canada as a Recommended Firm and we have been repeatedly recognized by Best Law Firms as a leading Commercial Litigation practice in Toronto. Our partner, Dan Thomas, is individually recognized for his expertise in Commercial Litigation by The Best Lawyers in Canada.

Strategic Corporate & Commercial Litigation Counsel

Ghahhary Thomas LLP represents corporations, shareholders, executives, and business owners in complex commercial disputes. Our team includes experienced corporate and commercial litigation lawyers who act in high stakes matters before the Ontario courts, in arbitrations, and in litigation across Canada. 

We understand that business disputes are rarely just legal problems. They disrupt operations, strain relationships, and create reputational risk. Our role is to resolve them efficiently while protecting our clients’ long-term business interests.

Corporate Litigation Services

As trusted corporate litigation lawyers, we advise and represent clients in disputes involving:

• Shareholder and partnership disputes
• Oppression remedy claims
• Breach of fiduciary duty
• Director and officer liability
• Corporate governance conflicts
• Derivative actions
• Disputes arising from mergers and acquisitions

We act quickly to assess risk, preserve leverage, and implement a clear litigation strategy.

Commercial Litigation Representation

Our commercial litigation practice addresses disputes that frequently arise in the course of business, including:

• Breach of contract claims
• Commercial fraud and misrepresentation
• Joint venture disputes
• Supply and distribution conflicts
• Professional negligence claims

As experienced commercial and financial banking litigation lawyers in Toronto, we tailor our strategy to the nature of the dispute and the commercial realities of your business.

Business Litigation Strategy

Litigation can be disruptive. We focus on:

• Early case assessment
• Strategic motion practice
• Efficient discovery management
• Strong advocacy at mediation
• Trial and appellate representation where required

We explore resolution where appropriate, but we prepare every matter as if it will proceed to trial. This approach strengthens negotiating positions and protects client interests.

Disputes Between Owners & Stakeholders

Business relationships often break down under financial pressure or governance conflict. We represent:

• Majority and minority shareholders
• Founders and partners
• Investors
• Boards of directors
• Senior executives
• Publicly traded and privately held corporations

Whether pursuing or defending a claim, we focus on securing practical outcomes that allow clients to move forward.

Why Clients Choose Ghahhary Thomas LLP

Clients engage our corporate and commercial litigation lawyers because we provide:

• Clear, direct advice
• Strong courtroom advocacy
• Strategic thinking grounded in business realities
• Experience across complex, high-value disputes
• Discretion in sensitive matters

Our lawyers bring international expertise and complex litigation experience to every engagement. Our corporate and commercial litigation practice has been repeatedly named as a leading firm in Toronto by Best Law Firms, we are ranked as a Recommended Firm in Benchmark Litigation Canada, and our partner Dan Thomas is ranked as a leading corporate and commercial litigator by The Best Lawyers in Canada.

Litigation, Arbitration & Alternative Dispute Resolution

Not all disputes belong in court. We represent clients in:

• Private arbitrations
• Contractual dispute resolution mechanisms
• Mediations and negotiated settlements

We advise on the most efficient path forward based on cost, risk, and business objectives.

Experienced Public Policy Lawyers

Ghahhary Thomas LLP provides strategic legal counsel on matters involving public policy development, legislative frameworks, and governance structures. Our lawyers act as public policy lawyers advising governments, institutions, and organizations navigating complex legal and regulatory environments.

Public policy and legislative initiatives often require careful legal analysis to ensure compliance with statutory authority, constitutional principles, and regulatory frameworks. Our team provides disciplined legal guidance to support effective policy development and governance decision-making.

We combine strong public law expertise with practical experience advising on legislative and regulatory initiatives.

Public Policy & Governance Advisory

We advise governments, institutions, and organizations on a wide range of public policy and governance matters, including:

• Development of public policy initiatives
• Governance frameworks for public institutions
• Legal analysis of regulatory and legislative proposals
• Policy implementation and compliance considerations
• Institutional governance structures
• Public sector decision-making frameworks

Our lawyers provide strategic legal advice to support sound policy development and effective governance.

Legislative Advisory Services

Legislative development often requires detailed legal analysis to ensure that proposed laws align with statutory authority and constitutional requirements.

Our legislative advisory services include advising on matters such as:

• Drafting and review of legislative proposals
• Legal analysis of statutory frameworks
• Interpretation of legislative authority
• Regulatory and statutory compliance issues
• Policy development involving legislative change
• Legal guidance during legislative reform processes

We assist clients in navigating the legal complexities associated with legislative development and regulatory reform.

Governance & Institutional Frameworks

Strong governance structures are essential to the effective functioning of public institutions and organizations.

Our public policy lawyers advise on matters involving:

• Governance policies and oversight structures
• Regulatory and institutional accountability
• Risk management and compliance frameworks
• Legal considerations in policy implementation
• Institutional governance reform
• Advisory support for public sector decision-making

We provide legal guidance designed to support responsible governance and effective institutional leadership.

Strategic Counsel in Policy & Legislative Matters

Public policy initiatives and legislative reforms often involve broader considerations beyond the legal framework itself, including:

• Institutional governance and accountability
• Regulatory and compliance implications
• Public interest considerations
• Long-term policy and regulatory impacts

Our team provides strategic advice that reflects these realities while helping clients navigate complex policy and legislative initiatives.

Leading International Arbitration Lawyers & Public International Law Counsel

Ghahhary Thomas LLP is a trusted Canadian firm with international expertise in complex matters of public international law and arbitration. Our partners are internationally recognized barristers, called to the Bars of Ontario, Canada and England & Wales.

We act as international arbitration lawyers and international law lawyers for sovereign states, public bodies, international organizations, and private entities engaged in cross-border disputes.

Our team combines courtroom advocacy with deep policy experience. We have practiced within leading global law firms, governments, international organizations, and NGOs. This allows us to approach international disputes with both legal precision and geopolitical awareness.

Leila Ghahhary is a member of the prestigious UK Attorney General’s Public International Law Panel – an elite panel of specialist barristers who advise and represent the UK government in cases involving international law across various courts, including international tribunals.

International Arbitration Representation

We represent clients in high-stakes international arbitration proceedings involving:

• Interstate disputes
• Interstate arbitrations
• Treaty-based claims
• Sovereign immunity issues
• State responsibility and reparations

Our advocacy is grounded in strategy, clarity, and procedural command. We manage disputes from early advisory stages through to final award and enforcement.

Where appropriate, we work alongside domestic counsel, diplomats, and policy advisors to align legal strategy with broader state or institutional objectives.

Public International Law Advisory

We advise on a broad spectrum of public international law matters, including:

• International criminal law
• International humanitarian law
  
• International human rights law
• Transitional justice mechanisms
• Peace and security frameworks
• Treaty drafting, negotiation, and interpretation
• International policy development

We assist clients in navigating complex legal frameworks that intersect with diplomatic, political, and regulatory realities.

Treaty Drafting & Interpretation

Precision in treaty drafting and interpretation is critical. We advise on:

• Bilateral and multilateral treaty negotiation
• Interpretation disputes
• State compliance obligations
• Reparations frameworks
• Immunity analysis

Our work supports governments and international bodies in building durable legal instruments that withstand scrutiny.

Strategic Counsel in Sensitive International Disputes

International disputes are rarely confined to legal doctrine alone. They often involve:

• Diplomatic consequences
• Regulatory implications
• Reputational risk
• Cross-border enforcement challenges

We provide measured, strategic advice that accounts for these realities.

Why Clients Engage Ghahhary Thomas LLP

Clients choose our firm because we offer:

• Dual Bar qualification (Canada and England & Wales)
• Advocacy experience at the highest levels
• Direct experience of acting for governments and international institutions
• Strategic clarity in politically sensitive matters
• Deep understanding of state responsibility and sovereign immunity disputes
• Ranked by leading legal directories including Chambers Canada, Chambers UK Bar, and Benchmark Litigation Canada.

We operate with discretion, precision, and intellectual rigor.

Experienced OSC & CIRO Investigation Lawyers

Ghahhary Thomas LLP provides strategic defence for individuals and organizations facing investigations by Canadian securities regulators. Our lawyers act as OSC investigation lawyers and CIRO investigation lawyers in complex regulatory matters involving securities law compliance, enforcement actions, and disciplinary proceedings.

We represent executives, directors, registrants, investment professionals, and companies navigating investigations initiated by the Ontario Securities Commission (OSC), the Canadian Investment Regulatory Organization (CIRO), and other provincial securities regulators.

Our lawyers combine deep regulatory knowledge with strong advocacy experience. With backgrounds in litigation, regulatory defence, and complex financial disputes, we provide clear strategic guidance during highly sensitive investigations.

Representation in Securities Regulatory Investigations

We defend clients in investigations conducted by securities regulators and self-regulatory organizations, including:

• Ontario Securities Commission (OSC) investigations
• Canadian Investment Regulatory Organization (CIRO) enforcement proceedings
• Market conduct and trading investigations
• Insider trading and market manipulation allegations
• Registration and compliance investigations
• Misrepresentation and disclosure-related matters

Regulatory investigations often begin with requests for documents, interviews, or formal examination under oath. Early legal guidance can be critical to protecting a client’s rights and managing exposure.

We advise clients from the earliest stages of an investigation through hearings, enforcement proceedings, and potential settlement discussions.

Responding to Regulatory Investigations

Being the subject of a securities investigation can have serious professional and reputational consequences. Our securities regulatory lawyers provide strategic advice on:

• Responding to regulatory inquiries and information requests
• Preparing for compelled interviews or examinations
• Managing document production obligations
• Navigating parallel regulatory and civil proceedings
• Developing defence strategies during enforcement investigations

We work closely with clients to ensure responses to regulators are accurate, strategic, and consistent with broader legal objectives.

Enforcement Hearings & Disciplinary Proceedings

If an investigation progresses to enforcement action, our lawyers represent clients before securities regulators and disciplinary tribunals.

Our advocacy includes:

• Representation in OSC enforcement hearings
• CIRO disciplinary proceedings
• Settlement negotiations with regulators
• Appeals and judicial review of regulatory decisions
• Defence against administrative penalties and sanctions

We provide disciplined courtroom advocacy combined with a detailed understanding of Canadian securities regulatory frameworks.

Strategic Counsel in Regulatory Investigations

Securities regulatory investigations often involve broader consequences beyond the legal proceeding itself, including:

• Professional licensing implications
• Regulatory sanctions and financial penalties
• Market reputation and investor confidence
• Parallel civil or criminal exposure

Our team provides strategic advice that addresses these broader risks while guiding clients through the regulatory process with clarity and confidence.

Why Clients Engage Ghahhary Thomas LLP

Clients facing securities regulatory investigations engage our firm because we offer:

• Strong litigation and regulatory defence experience
• Strategic representation in high-stakes investigations
• Clear guidance during complex regulatory proceedings
• Experience defending professionals and financial institutions
• Discretion and professionalism in sensitive matters

Our lawyers approach regulatory investigations with precision, discipline, and a focus on protecting our clients’ professional and legal interests.

Trusted Government and Public Sector Legal Counsel

Ghahhary Thomas LLP has significant experience in public law, representing government departments, public organizations, regulatory bodies, corporate entities, and individuals in high stakes matters. We are seasoned government and public sector lawyers and public law lawyers who provide strategic advice and effective advocacy on complex legal issues that shape public decision-making and institutional authority.

The firm’s extensive public law expertise is grounded in its experience representing leading institutions before various courts and tribunals, and is further strengthened by its knowledge of regulatory, corporate, civil, and administrative law.

Public Law Advisory and Representation

As public law lawyers, we advise clients on:

• Administrative law and judicial review
• Statutory interpretation and delegated authority
• Public accountability and compliance with legal mandates
• Principles of good governance and procedural fairness
• Policy design and regulatory implementation
• Administrative regulatory decision challenges
  
• Public policy governance legislation

We help clients understand the legal parameters within which governments and public bodies must operate and assist them in navigating challenges when decisions are contested.

Government Litigation Counsel

Our team acts as government litigation lawyers in court proceedings involving government powers and public responsibilities. We defend and advance public bodies’ interests in:

• Judicial reviews and statutory appeals
• Constitutional and administrative law disputes
• Emergency motions and injunctions
• Intergovernmental and regulatory disputes

We begin every matter with a disciplined assessment of legal authority, risk, and the broader implications of public law challenges.

Practical Counsel for Public Sector Institutions

Public institutions operate within complex statutory frameworks. We provide ongoing public sector legal counsel to:

• Government ministries and agencies
• Regulatory authorities
• Commissions and tribunals
• Public health and education bodies
• Crown corporations and commissions

Our advice is practical and aligned with operational priorities. We work closely with in-house counsel and senior leadership to ensure decisions are legally sound and strategically optimized.

Strategic Support Across High Profile Matters

Public law disputes often involve public scrutiny and political sensitivity. Our lawyers provide counsel that accounts for:

• Institutional risk assessment
• Document strategy and legal privilege
• Coordination with communications teams
• Parallel regulatory or civil exposure

We offer clear and responsive guidance in matters that have broad public impact.

Why Clients Choose Ghahhary Thomas LLP

Clients engage our government and public sector lawyers because we deliver:

• Direct, practical legal advice rooted in deep public law experience
• Strong advocacy in complex public law litigation
• Strategic thinking that balances legal risk with public accountability
• Clear communication tailored to government decision-makers

Our work helps clients manage legal exposure while safeguarding their authority and mandate. Our firm is ranked as a Recommended Firm by Benchmark Litigation Canada, and our partner Leila Ghahhary is recognized as a leading lawyer for Litigation: Administrative & Public Law by Chambers Canada.

Both our partners have achieved the distinction of appointment to the UK Attorney General’s elite Civil Panel of Counsel, regularly representing and advising a variety of government departments on public law matters. In addition, Leila Ghahhary has been appointed to the UK Equality and Human Rights Commission Panel of Counsel, providing advice and representation to the Commission on matters relating to equality, public, and human rights law. Leila Ghahhary is also a member of the UK Attorney General’s Public International Law Panel of Counsel.

Experienced Regulatory Investigations Lawyers

Ghahhary Thomas LLP provides strategic legal representation for individuals, professionals, and organizations facing regulatory investigations and enforcement proceedings. Our lawyers act as regulatory investigations lawyers advising clients involved in complex compliance disputes, licensing enforcement matters, and regulatory proceedings.

Regulatory investigations can carry significant legal, financial, and professional consequences. These matters often involve oversight by government regulators, professional licensing bodies, and industry regulators responsible for enforcing compliance obligations.

Our team combines strong litigation advocacy with deep experience navigating regulatory and enforcement frameworks.

Representation in Regulatory Enforcement Matters

We represent clients involved in regulatory investigations and enforcement proceedings, including:

• Investigations by regulatory and oversight bodies
• Licensing enforcement proceedings
• Allegations of regulatory non-compliance
• Disciplinary proceedings before professional regulators
• Enforcement actions involving regulated industries
• Administrative and regulatory enforcement litigation

Our lawyers provide strategic representation from the earliest stages of a regulatory investigation through to enforcement proceedings, disciplinary and merits hearings, and appeals.

Compliance & Regulatory Risk Management

Organizations and professionals operating in regulated industries must comply with complex regulatory frameworks and licensing requirements.

Our compliance lawyers advise on matters involving:

• Regulatory compliance obligations
• Licensing and professional regulatory requirements
• Allegations of professional misconduct
• Risk assessments involving regulatory exposure
• Governance and compliance frameworks
• Responses to regulatory inquiries and investigations

We assist clients in understanding their regulatory obligations and developing strategies to address compliance challenges.

Regulatory Hearings & Enforcement Proceedings

Regulatory enforcement actions frequently involve formal proceedings before tribunals, licensing authorities, or regulatory bodies.

Our advocacy includes:

• Representation in regulatory enforcement hearings
• Strategic motion practice and procedural applications
• Defence against disciplinary or enforcement actions
• Preparation of evidence and legal submissions
• Appeals and judicial review of regulatory decisions

We work closely with clients to develop effective legal strategies when responding to regulatory enforcement actions.

Strategic Counsel in Regulatory Investigations

Regulatory investigations and enforcement actions often involve broader considerations beyond the legal proceeding itself, including:

• Professional licensing and regulatory compliance implications
• Institutional governance and risk management
• Reputational considerations and stakeholder confidence
• Long-term regulatory relationships

Our team provides strategic advice that reflects these realities while helping clients navigate complex regulatory proceedings.

Why Clients Engage Ghahhary Thomas LLP

Clients facing regulatory investigations and enforcement proceedings engage our firm because we offer:

• Strong advocacy in complex regulatory disputes
• Strategic representation in licensing and compliance matters
• Deep understanding of regulatory and administrative frameworks
• Experience advising professionals, businesses, and institutions
• Discretion and professionalism in sensitive matters

Our lawyers approach regulatory enforcement matters with precision, discipline, and rigorous legal analysis. Our partners have been ranked by Chambers & Partners UK Bar and Legal 500 UK Bar for their experience in regulatory law.

Experienced Securities Litigation Lawyers in Canada

At Ghahhary Thomas LLP, our team provides sophisticated legal counsel and representation in securities litigation and enforcement matters. We act as trusted securities litigation and regulatory lawyers for corporations, senior executives, financial institutions, and individuals facing complex disputes and regulatory scrutiny in Ontario and beyond.

Our founders are internationally recognized barristers with deep experience in high stakes litigation and regulatory defence. Drawing on decades of combined courtroom strategy and advocacy across Canada and the UK, we deliver legal solutions that are informed, strategic, and outcomes-focused.

Comprehensive Securities Litigation Services

Securities litigation covers a broad array of disputes arising from capital markets, financial regulation, and fiduciary duties. As experienced securities litigators, we counsel and represent clients in:

Regulatory Investigations and Enforcement

• Defence in proceedings before the Ontario Securities Commission (OSC), provincial securities regulators, and the Canadian Investment Regulatory Organization (CIRO)
• Responding to allegations of disclosure violations, reporting failures, compliance deficiencies, insider trading and tipping
• Handling enforcement actions that may include sanctions or civil liability exposure

Our experience includes defending corporations and executives in enforcement contexts concerning evolving regulatory frameworks, including emerging areas like cryptocurrency regulation.

Class Actions & Securities Litigation

We represent corporate and individual clients in significant securities litigation matters and class action proceedings, including:

• Secondary market misrepresentation and omission claims
• Primary market disclosure and prospectus litigation
• Claims of investor loss due to misstatements or omissions under Ontario securities law

Our team balances legal precision with strategic advocacy to navigate procedural complexities and potential damages exposure.

Cross-Border and Multi-Jurisdictional Matters

Our experience is not limited to domestic litigation. We advise clients on:

• Cross-border regulatory investigations
• Parallel enforcement proceedings involving US and UK securities regulators
• Multi-jurisdictional litigation strategies

This cross-border capability enables us to deliver seamless counsel when matters span provincial, national, and international regulatory environments.

Quasi-Criminal Securities Proceedings

Ghahhary Thomas LLP’s decades of business crime trial experience – as prosecutors and defence counsel – provides our clients who face quasi-criminal and criminal proceedings involving securities law breaches under the Securities Act and/or the Criminal Code with a unique multi-disciplinary team.

Why Choose Our Securities Litigation Lawyers

Clients turn to Ghahhary Thomas LLP because we provide:

• Strategic defence and advocacy tailored to complex securities matters
• A multi-disciplinary approach blending corporate litigation, regulatory law, and enforcement expertise
• Representation by lawyers with elite advocacy credentials and international qualifications
• A reputation for tenacity in high-stakes legal disputes
• Ranked by the leading legal directories in Canada including Benchmark Litigation Canada, Best Law Firms, and The Best Lawyers in Canada

Our approach focuses on clarity of process, early identification of risks, and pursuit of the best possible outcomes.

Effective representation requires a deep understanding of market regulations and litigation strategy. Ghahhary Thomas LLP lawyers bring this expertise to every engagement, ensuring clients are informed, prepared, and strategically positioned. Our partner, Dan Thomas, is a seasoned securities litigation lawyer whose experience in this field is reflected by his membership of the Capital Markets Tribunal’s Securities Proceedings Advisory Committee. 

Experienced Shareholder & Partnership Dispute Lawyers

Ghahhary Thomas LLP represents business owners, shareholders, partners, and corporate stakeholders involved in complex shareholder and partnership disputes. Our lawyers act as shareholder dispute lawyers and partnership dispute lawyers in matters involving governance conflicts, fiduciary obligations, and corporate control issues.

Disputes between business partners or shareholders can quickly disrupt operations and threaten the long-term stability of a company or partnership. We provide strategic legal guidance designed to protect our clients’ financial interests while resolving conflicts efficiently and effectively.

Our team combines deep commercial litigation experience with a practical understanding of corporate governance, shareholder rights, and partnership relationships.

Representation in Shareholder & Partnership Disputes

We represent clients in disputes arising between shareholders, partners, and corporate stakeholders, including:

• Shareholder oppression claims
• Breach of fiduciary duty
• Partnership disputes and dissolution
• Disputes involving shareholder agreements
• Corporate governance conflicts
• Minority shareholder rights

These disputes often arise from disagreements about control of a company, financial decisions, management authority, or the direction of the business.

Our lawyers provide strategic representation at every stage of a dispute, from early negotiations to formal litigation.

Oppression Remedy & Minority Shareholder Rights

Canadian corporate law provides remedies for shareholders whose rights or reasonable expectations have been unfairly disregarded by those in control of a company.

Our shareholder dispute lawyers advise on matters involving:

• Oppression remedy claims
• Unfairly prejudicial conduct by majority shareholders
• Exclusion of shareholders from management
• Misuse or diversion of corporate assets
• Corporate governance abuses
• Protection of minority shareholder rights

We help clients evaluate potential claims and pursue remedies that restore fairness and protect their financial interests.

Partnership Disputes & Business Conflicts

Disagreements between business partners can escalate quickly and create significant operational challenges.

Our partnership dispute lawyers advise on issues including:

• Breaches of partnership agreements
• Fiduciary duty disputes between partners
• Business dissolution and restructuring
• Financial disputes and profit allocation
• Deadlock between business owners

We provide clear legal strategies aimed at resolving disputes while minimizing disruption to the underlying business.

Strategic Counsel in Business Disputes

Shareholder and partnership disputes often extend beyond the legal proceeding itself. These matters frequently involve broader considerations such as:

• Business continuity and operational stability
• Protection of corporate assets
• Financial and reputational risk
• Long-term ownership and governance structures

Our team provides strategic advice that reflects these realities while advancing our clients’ legal and commercial objectives.

Why Clients Engage Ghahhary Thomas LLP

Clients facing shareholder or partnership disputes engage our firm because we offer:

• Strong commercial litigation experience
• Strategic representation in complex business disputes
• Deep understanding of corporate governance conflicts
• Experience advising business owners and executives
• Discretion and professionalism in sensitive matters

Our lawyers approach business disputes with precision, discipline, and a clear focus on protecting our clients’ commercial interests. Our firm has been repeatedly ranked by Best Law Firms as a leading Corporate & Commercial Litigation practice in Toronto, and our firm has been recognized as a Recommended Firm by Benchmark Litigation Canada. Our partner, Dan Thomas, has been individually ranked for his experience in Corporate & Commercial Litigation in The Best Lawyers in Canada.

Experienced White Collar Defence Lawyers

Ghahhary Thomas LLP provides strategic legal representation for individuals and organizations facing complex white collar and regulatory investigations. Our lawyers act as white collar defence lawyers advising clients involved in allegations of fraud, corruption, financial misconduct, and regulatory violations.

White collar investigations often involve significant legal exposure, regulatory scrutiny, and reputational risk. These matters frequently arise from government investigations, regulatory enforcement actions, or internal corporate investigations.

Our team combines strong litigation advocacy with deep experience navigating complex regulatory and investigative frameworks.

Representation in White Collar Investigations

We represent executives, professionals, corporations, and institutions facing investigations and enforcement proceedings involving alleged financial or regulatory misconduct, including:

• Fraud and financial misconduct investigations
• Corruption and bribery allegations
• Regulatory enforcement proceedings
• Corporate misconduct investigations
• Market conduct and financial compliance issues
• Government and regulatory investigations

Our lawyers provide strategic defence and legal guidance from the earliest stages of an investigation through to enforcement proceedings and potential litigation

Why Clients Engage Ghahhary Thomas LLP

Clients facing white-collar or regulatory investigations engage our firm because we offer:

• Strong experience in complex investigations and enforcement matters
• White collar business crime and regulatory jury trial experience
• Strategic representation in high-stakes regulatory proceedings
• Deep understanding of financial and regulatory frameworks
• Experience advising executives, professionals, and institutions
• Discretion and professionalism in sensitive matters

Our lawyers approach white collar investigations with precision, discipline, and careful strategic judgment. Our partners have been repeatedly recommended by Chambers & Partners UK Bar and Legal 500 UK Bar as leading barristers in financial, business, and regulatory crime.