Karin Sachar

Karin has a wide-ranging commercial litigation practice, with significant expertise in class actions, securities litigation, product liability matters, broker-dealer disputes, and insolvency and restructuring.

She has appeared before all levels of court in Ontario, the British Columbia Supreme Court, and the Supreme Court of Canada. Karin has both trial and arbitration experience, having completed a long, complex trial, and multiple arbitrations.

Karin is an editor of Osler’s Class Action Blog and speaks conversational Hebrew.

Representative Work

  • A pharmaceutical company and national retail pharmacy chain in the defence of multiple class actions commenced across the country in respect of opioid products, including a novel statutory action commenced on behalf of the provincial governments.
  • An international bank in a complex class action pertaining to allegedly improper fees being applied to customer accounts.
  • A leading medical device company in one of North America’s largest product liability disputes defending multiple concurrent product liability class actions and individual actions in several jurisdictions.
  • BP plc in defending a proposed securities class action commenced in Ontario arising from the 2010 Deepwater Horizon accident and subsequent Gulf of Mexico oil spill.
  • A leading gasoline, oil, and natural gas company in achieving the discontinuance of a product liability action involving allegations of negligence in relation to their market-leading hydraulic oil.
  • A large international mining company in respect of various claims arising from the construction of a large-scale processing facility culminating in a lengthy Ad Hoc Arbitration.
  • An international manufacturer of hair care products in its defence of a class action including allegations of various legislative and common law breaches.
  • A multinational insurance company in obtaining an early dismissal of a dispute involving alleged breaches of privacy.
  • A large construction company in a defamation matter, including a successful, precedent-setting appeal of the results of an Anti-SLAPP motion.
  • An IIROC dealer member in successfully defending an arbitration before the Investment Industry Regulatory Organization of Canada (IIROC).
  • A leading international manufacturer of waste treatment equipment in a complex multi-jurisdictional product liability case involving many parties.
  • A global leader in the lighting industry in multiple matters involving claims surrounding allegedly defective products used in large-scale commercial applications.
  • A large international automobile manufacturer in a multijurisdictional class action trial and subsequent appeal arising out of an insolvency.
  • Sears Canada in connection with its proceedings under the CCAA
  • Forever XXI in connection with its proceedings under the CCAA
  • Imperial Tobacco in connection with its proceedings under the CCAA
  • Walter Energy Canada Holdings Inc. in connection with its proceedings under the CCAA
  • Ben Moss Jewellers in connection with its proceedings under the CCAA
  • Cash Store Financial Services Inc in connection with its proceedings under the CCAA
  • RSM US LLP in the launch of RSM Canada with provision of risk management advice in the context of a merger.
  • Comark completes sale transaction and emerges from creditor protection.

Latest Insights

  • Blog Jun 20, 2023

    Who’s footing the bill? Court of Appeal upholds the narrow circumstances for holding a non-party litigation lender liable for costs

    A recent Court of Appeal of Ontario decision highlights that defendants may not be able to recoup their costs from non-party litigation funders.

    Read more
    Who’s footing the bill? Court of Appeal upholds the narrow circumstances for holding a non-party litigation lender liable for costs
  • Blog Jun 14, 2022

    Rocks, stocks, and two smoking rulings: Court dismisses motion for leave and declines to certify securities class action

    In a recent decision, the Ontario Superior Court dismissed a motion for leave to bring a secondary market misrepresentation claim and declined to...

    Read more
    Rocks, stocks, and two smoking rulings: Court dismisses motion for leave and declines to certify securities class action
  • Blog Feb 9, 2021

    Ontario Court orders class action trial to proceed by virtual means

    In Flying E. Ranche Ltd. v. Attorney General of Canada 2020 ONSC 8072, Justice Schabas recently  rejected an adjournment sought due to...

    Read more
  • Osler Update Feb 9, 2021

    Ontario Superior Court recognizes new cause of action addressing internet harassment

    In Caplan v. Atas (Caplan), Justice Corbett took the extraordinary step of recognizing a new common law tort of internet harassment in response to an...

    Read more
View all Insights

Media Mentions

  • Osler News Nov 2, 2020

    Osler hosts Annual Women’s Event featuring keynote speaker Amy Shira Teitel

    On October 20, 2020, female lawyers from all six of Osler’s offices came together for an hour of inspiration and conversation at our Annual Women's...

    Read more
  • Osler News Mar 1, 2020

    Osler welcomes 11 new partners, 1 new counsel

    Osler is proud to announce the addition of 11 new partners and one new counsel across three of our offices, effective March 1.

    Read more
  • Osler News Dec 3, 2019

    Osler’s Undertakings Management Tool wins Precedent Innovation Award

    Osler is proud to announce that the team behind the firm’s groundbreaking Undertakings Management Tool has been recognized with a 2019 Precedent...

    Read more
  • Media Mentions Jul 31, 2017

    Focus: Companies use third-party litigation funding — Law Times

    Third-party litigation funding is emerging as an option for companies to ease their legal spend, according to an article in Law Times.

    Read more

Community Involvement

  • Outside counsel assisting the United Nations Office of Staff Legal Assistance, Volunteer
  • Pro Bono Law Ontario, Law Help Centre Volunteer
  • Stephen Lewis Foundation, Committee Member for the Give a Day Campaign

Speaking and Writing

Speaking Engagements

“Push and Pull in Class Proceeding Standards North of the Border: Re-Evaluating Preferable Procedure Requirements in Canadian Class Actions”, Federation of Defense and Corporate Counsel (FDCC) Class Action and Multi-District Litigation Newsletter, March 2020, (with Sonia Bjorkquist and Jessica Habib)

“The Class of 2012:  Where Are We Now?, Class Action Developments in the Common Law Provinces 2012”, March, 2013 (with Sonia Bjorkquist and Mary Paterson), editions by Yvon Blais

Quoted in “Charity Lawsuit has Implications for Class Actions”, Drew Hasselback, Financial Post, November 7, 2012 (with Laura Fric and Kevin O’Brien)

Litigating a Cross-Border Class Action in Canada” presented at the ALM Cross-Border Litigation Forum in New York City, September 12, 2012 (with Deborah Glendinning, Sonia Bjorquist and Mary Paterson)

“Undertakings And The Inevitable Refusals Motion” Divine Discoveries: Building A Great Case, April 19, 2012 (with Valerie A.E. Dyer)

“Just Enough:  Practical Boundaries of Certification”, Colloque National sur les Recours Collectifs, Barreau du Quebec, March 2014 (with Mary Paterson and Sonia Bjorkquist)



  • University of Toronto, J.D.
  • Queen’s University, B.Sc. (Chemistry)
  • Queen’s University, B.A. (Hons.) (History)


  • English