Reuben Rothstein Photo
Reuben Rothstein Photo
Reuben Rothstein Photo

Reuben is a skilled litigation lawyer with a focus on complex corporate and commercial disputes. He litigates a wide array of matters, including breach of contract, business torts, employment-related matters, product liability, and the enforcement of letters rogatory. Reuben has expertise in matters related to commercial fraud, digital asset tracing and recovery, and co-leads the firm’s Blockchain, Cryptocurrency and Digital Assets Group.

Reuben helps clients navigate all stages of litigation, from pre-suit through appeal. He has appeared before all levels of court in Ontario and various arbitration and administrative tribunals. In addition to litigation, Reuben advises clients on business issues such as contract drafting and negotiation, litigation risk management, and commercial transactions.

Beyond the courtroom, Reuben remains dedicated to the law and community service. He holds leadership positions on the New Lawyers Committee of the Toronto Lawyers Association and the Young Lawyers Steering Committee of the Defence Research Institute. Reuben also regularly volunteers on Pro Bono Ontario’s Free Legal Advice Hotline.

Representative Matters

  • Representing a cryptocurrency investor in an action against a hacker related to alleged fraud, conversion and market manipulation. Obtained and executed the first Anton Piller order on cryptocurrency in Canada.
  • Representing the Regional Municipality of Halton in an action against multiple defendants related to alleged fraud, conversion, breach of trust and conspiracy.
  • Representing an American manufacturer of outdoor power equipment in a product liability action and six-week trial. Obtained leave (as an articling student) to argue a contested motion and cross-examine a witness.
  • Representing a major cannabis company in an arbitration dealing with the alleged repudiation of a license, supply and distribution agreement.
  • Representing companies in shareholder dissent applications and related commercial disputes regarding non-payment of invoices and ownership of intellectual property.
  • Representing a major pharmaceutical company in a putative class action by the Province of British Columbia (on behalf of itself and all federal, provincial and territorial governments) for the recovery of health care costs from certain pharmaceutical manufacturers and distributors of opioid-related products.
  • Representing a major cinema company in claims totaling US $125 million for breach of contract, breach of confidentiality and conspiracy, arising from a lease termination in one of the largest cinema projects in the Middle East.
  • Providing advice on risk of product liability litigation in multi-million dollar corporate acquisition transactions.


Media Mentions

Rankings & Recognitions

  • Perley-Robertson, Hill & McDougall LLP Prize
  • Association of Professors of University of Ottawa Award
  • Faculty of Common Law Dean’s Honour List

Community Involvement

  • Pro Bono Ontario, Free Legal Advice Helpline

Directorships & Affiliations

  • Toronto Lawyers Association, Young Lawyers Committee
  • Defense Research Institute, Young Lawyers Committee
  • The Advocates’ Society
  • American Bar Association, Litigation Section

Education & Admissions

Called to the Ontario bar
JD (cum laude)University of Ottawa
BAMcGill University


Insights (5 Posts)View More

Featured Insight

Part 3 of McMillan Series – DeFi Platform Mango Loses $117 Million in Smart Contract Exploit: Avraham Eisenberg Arrested and Sued

In Part 3 of this series, we describe two important developments in the Mango Markets story, demonstrating challenges DAOs have settling with exploiters.

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Feb 8, 2023
Featured Insight

Clarity over Breadth: The Court of Appeal Refuses to Limit Liability under Sale of Goods Act

In Pine Valley Enterprises, the Ontario Court of Appeal confirms that exclusion clauses are not effective unless they use "explicit, clear and direct" language.

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Apr 14, 2022
Featured Insight

Commercial Leases During the COVID-19 Lockdown: Where are we Headed?

Ontario has also passed legislation to protect commercial tenants.

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May 17, 2021