Mettrum Ltd. Medical Marijuana Recall Class Action

On March 6, 2017, Roy O’Connor LLP issued a proposed class action lawsuit on behalf of a proposed representative plaintiff (Erin Christiansen) against medical marijuana producer Mettrum Ltd.

The lawsuit alleges that Mettrum Ltd used unauthorized pest control products in the production of some of its medical marijuana products between September 2014 and November 2016. The lawsuit seeks millions in damages for the proposed class of individuals who purchased the affected products. The Court has not yet determined whether the Plaintiff’s claim will be successful.

Process & Hearing of Certification Motion

A Class Action Case Management Judge has been appointed to oversee this proceeding.

The plaintiff is moving to have this action certified as a class proceeding.

The plaintiff’s certification motion will be heard by the Ontario Superior Court of Justice in Oshawa, Ontario on May 13, 2019.

The results of the certification hearing will posted on this website as soon as they are released by the Court.

More Information

For more information please contact James Katsuras at:


Phone: 416-362-1989
Toll Free: 1-888-330-8815

About Roy O’Connor LLP

Roy O’Connor LLP has been recognized in peer reviews as one of Canada’s leading boutique litigation firms and leading litigators in class actions. Among other things, Roy O’Connor is Benchmark Canada's (a guide to Canada's leading litigators) three-time winner of its award for Plaintiff’s Firm of the Year in Canada (2013, 2015 and 2017). In addition, the partners in the firm (including David O’Connor, who is the senior lawyer on the Mettrum case) were previously featured in the Canadian Bar Association National Magazine and recognized as one of the best class action firms in the country, with an undeniable track record for excellence. At the same time, David and his partners were further recognized in the CBA National Magazine as a stellar example of lawyers making a difference. For more information about Roy O’Connor, its lawyers and their experience please see our main site.‎

Register For More Information

This form will help us gather information relevant to the proposed class action Christiansen v Mettrum Ltd. If you purchased any of the affected products and wish to receive information from time to time about the status of the lawsuit, you may request such information by filling in the form below. Registration should include name, address, email, phone etc.