Chantelle Cseh

Partner

Chantelle Cseh

Chantelle Cseh

Partner

Known for her creative use of litigation technology and excellent advocacy skills, Chantelle provides clients with innovative solutions in complex civil litigation matters.

Chantelle advises clients of all sizes across a wide range of civil litigation matters, including complex commercial disputes, competition disputes, securities disputes and misuse of confidential information claims. A significant portion of Chantelle’s practice involves the defence of national and cross-border class actions, including respecting allegations of anti-competitive conduct. Clients particularly appreciate Chantelle’s practical and analytical approach, as well as her unflappable manner.

Chantelle is at the forefront of the use of litigation technology, and regularly consults on best practices for paperless litigation. A frequent lecturer and author, Chantelle often presents for organizations such as the Law Society of Ontario, the Canadian Bar Association and The Advocates’ Society.

Chantelle sits on the Board of Directors and acts as the Chair of the Governance and Risk Management Committee of Earth Rangers, a not-for-profit organization that educates children about biodiversity and environmental sustainability.

Chantelle Cseh

Partner

Known for her creative use of litigation technology and excellent advocacy skills, Chantelle provides clients with innovative solutions in complex civil litigation matters.

Chantelle advises clients of all sizes across a wide range of civil litigation matters, including complex commercial disputes, competition disputes, securities disputes and misuse of confidential information claims. A significant portion of Chantelle’s practice involves the defence of national and cross-border class actions, including respecting allegations of anti-competitive conduct. Clients particularly appreciate Chantelle’s practical and analytical approach, as well as her unflappable manner.

Chantelle is at the forefront of the use of litigation technology, and regularly consults on best practices for paperless litigation. A frequent lecturer and author, Chantelle often presents for organizations such as the Law Society of Ontario, the Canadian Bar Association and The Advocates’ Society.

Chantelle sits on the Board of Directors and acts as the Chair of the Governance and Risk Management Committee of Earth Rangers, a not-for-profit organization that educates children about biodiversity and environmental sustainability.

The Estate Trustees of Barry Sherman and Honey Sherman

Acting as counsel to the Estate Trustees of Barry Sherman and Honey Sherman in legal proceedings against Kevin Donovan (Chief Investigative Reporter at the Toronto Star) in regards to a sealing order obtained by the Estate Trustees which restricts public access to materials filed in connection with the routine administration of the Shermans' estates. Leave to appeal to the Supreme Court of Canada has been granted for the Estate Trustees' appeal of the decision of the Ontario Court of Appeal denying the protective order.

Canadian Chamber of Commerce

Acted for the Canadian Chamber of Commerce as an intervener before the Supreme Court of Canada in an appeal concerning the applicability of arbitration clauses to class actions in Ontario.

KSV Kofman Inc.

Acted for KSV Kofman Inc., as monitor for the Urbancorp Group of Companies, in an appeal concerning whether a certain transaction was a fraudulent conveyance or otherwise voidable by the monitor in connection with Urbancorp's CCAA proceedings.

SK Hynix America Inc.

Acting for SK Hynix America Inc. in its defence of multiple class actions across Canada alleging anti-competitive conduct in respect of the sale of dynamic random-access memory (DRAM) chips, including with respect to cross-border issues arising out of parallel U.S. class actions.

Delta Air Lines

Acting for Delta Air Lines in defending a multi-billion dollar proposed class action alleging a conspiracy to constrain the capacity of the passenger airline industry in North America.

Giant Tiger Stores Limited

Acting for Giant Tiger Stores Limited in its defence of multiple class proceedings commenced across Canada (including Ontario, British Columbia, Saskatchewan, Alberta, Manitoba, Québec and the Federal Court) relating to alleged price-fixing of commercial bread products in Canada at the wholesale and retail levels.

Ontario Lottery and Gaming Corporation

Successfully acted for the Ontario Lottery and Gaming Corporation in a judicial review application brought by the City of Niagara and the Region of Niagara Falls concerning the selection process for an operator of the Niagara gaming bundle.

Morgan Stanley Canada Limited

Acted for Morgan Stanley Canada Limited in a class action instituted against 12 global banks based on an alleged conspiracy to artificially fix foreign currency exchange rates.

Ontario Lottery and Gaming Corporation

Acting for the Ontario Lottery and Gaming Corporation (OLG) defending allegations that OLG owes a duty of care to prevent "problem gamblers" from gambling in OLG's commercial casinos.

Kawasaki Motors Corporation, USA

Acting for Kawasaki Motors Corporation, USA in its defence of class actions commenced in Canada alleging price-fixing and misleading advertising in respect of the sale by others of lawn mowers in Canada.

HudBay Minerals

Acted for HudBay Minerals Inc. in a large, complex international arbitration in Lima, Peru arising out of the construction of the Constancia Mine.

Detour Gold Corporation

Acted for Detour Gold Corporation in a securities class action involving alleged breaches of the public disclosure requirements of the Securities Act (Ontario) in relation to the company's production and cost guidance during the ramp-up of the Detour Lake Mine, and to details of one of the company's credit agreements.

Zimmer Biomet Holdings, Inc.

Acting for Zimmer Biomet Holdings, Inc. in defending class action proceedings in the Superior Court of Ontario concerning alleged defects in Biomet's metal-on-metal hip replacement and resurfacing devices.

Robert Schad and Athena Automation Limited

Acted for Robert Schad and his company Athena Automation Limited in defending successfully a series of claims asserted against them for damages and injunctive relief arising from their alleged misuse of confidential information and the breach by Mr. Schad of his non-compete and non-solicitation obligations owed to Husky Injection Molding Systems Limited, a company founded by Mr. Schad half a century ago. All claims asserted by Husky against Mr. Schad and Athena in this "bet the company" case were dismissed by Justice Newbould of the Ontario Superior Court in April 2016, following a lengthy trial in the Commercial List.

Denso Corporation

Acting for Denso Corporation (and related entities) in its defence of dozens of class actions commenced across Canada alleging anti-competitive conduct in respect of the sale of various automotive parts, including contested certification proceedings and with respect to cross-border issues arising out of parallel U.S. class actions.

Agnico Eagle Mines Limited

Acted for Agnico Eagle Mines Limited and certain of its current and former officers and directors in their defence of a multi-jurisdictional class action alleging that the company's public disclosure was false and misleading contrary to Part XXIII.1 of the Ontario Securities Act.

Beijing Matsushita Color CRT Company, Ltd.

Acted for Beijing Matsushita Color CRT Company, Ltd. in defence of class actions commenced in Canada alleging price-fixing in respect of the sales of cathode ray tubes.

Whirlpool

Acted for Whirlpool in defence of class actions commenced in Canada alleging price-fixing in respect of the sales of compressors.

Jack Burke

Successfully represented Canadian cyclist Jack Burke before the International Court of Arbitration for Sport in establishing that Jack had no fault for his ingestion of HCTZ. The decision is one of the first findings of "no fault" rendered by the Court.

Chi Mei Optoelectronics

Acted for Chi Mei Optoelectronics in its defence of multiple class actions commenced across Canada alleging price fixing in respect of the sales of LCD panels, including with respect to cross-border issues arising out of parallel U.S. class actions.

Bulletin

COVID-19 and the Courts: What You Need to Know

May 27, 2020 - Across the globe, courts are rapidly adapting their practices and procedures in response to the COVID-19 pandemic. In a number of jurisdictions, hearings have been adjourned; procedures and timelines for filings have been amended; and limitation periods have been suspended. We have summarized...

Speaking Engagement

Moderator, American Bar Association, “Life After Godfrey: The New Ground Rules for Competition Class Actions in Canada”; Toronto, ON

Apr. 01, 2020

Speaking Engagement

The Law Society of Ontario, Our Civil Justice System: Envisioning Innovation and Change, “Professionalism - The Roles of the Courts and Counsel in Advocacy (How You Can Affect Change)”; Toronto, ON

Feb. 25, 2020

Article

Litigating in the Post-Godfrey World: What You Need to Know About the New Ground Rules for Competition Class Actions in Canada, co-author

Feb. 18, 2020 - The Antitrust Source (American Bar Association)
Read the article.

Speaking Engagement

Ontario Bar Association, Litigation in the Digital Age: A Guide to the Paperless Practice, “How to Prepare For and Conduct Digital Hearings”; Toronto, ON

Feb. 06, 2020

Bulletin

Top Court Expands Scope of Potential Liability in Price-Fixing Class Actions

Sept. 24, 2019 - The Supreme Court of Canada has released its long-awaited decision in two companion appeals that have significant implications for class actions alleging conduct that contravenes the criminal provisions found in Part VI of the Competition Act (Act). In its decision in Pioneer...

Speaking Engagement

Canadian Bar Association, Competition Law Section, “Managing The Civil and Criminal Aspects of A Cartel File”; Toronto, ON

Mar. 07, 2019

Speaking Engagement

Co-chair, Ontario Bar Association, Young Lawyers Division Program, “Your First Civil Trial”; Toronto, ON

Mar. 01, 2019

Article

Welsh v. Ontario: Regaining Predictability in the Settlement and Fee Approval Process, but at What Cost?, co-author

Feb. 25, 2019 - Ontario Bar Association
Read this article.

Ontario Bar Association—The Heather McArthur Memorial Young Lawyers Award (2020)

Osgoode Hall Law School—Alumni Gold Key Award, One-to-Watch (2019)

Lexpert Zenith Award—Celebrating Change Agents in Law (2019)

Benchmark Canada: The Definitive Guide to Canada’s Leading Litigation Firms & Attorneys—Future Star

Financial Times’ North America Innovative Lawyers Report—Top 10 Individuals (2019)

Chambers Canada Award—Litigation Firm of the Year (2018)

Chambers Canada: Canada’s Leading Lawyers for Business—Litigation, General Commercial Department: Ontario (Band 1 for firm)

Bar Admissions

Ontario, 2011

Education

Osgoode Hall Law School, JD (Highest Standing in Trial Advocacy), 2010
Laurentian University, BA (Psychology), 2006

Professional Affiliations

The Advocates’ Society
Young Canadian Arbitration Practitioners

Board Memberships

Earth Rangers

Community Involvement

Earth Rangers, Governance and Risk Management Committee, Chair
Flip Your Wig for Justice (2016), “Champion for Access to Justice”
Ontario Bar Association, Civil Litigation Section Executive, Technology Liaison; Technology and the Courts Sub-Committee, Chair
Ontario Bar Association, Class Action Bench-Bar Liaison Committee
Ontario Bar Association, Class Actions Section Executive, Technology Liaison
Ontario Superior Court of Justice, Commercial List Users’ Committee
Osgoode Hall Law School, Osgoode First Generation Students’ Network, Alumni Mentor
Osgoode Hall Law School, Osgoode Indigenous Students’ Association, Speaker and Mentor
Osgoode Hall Law School, OWN Alumnae Mentorship Program, Mentor
Women’s Law Association of Ontario, Mentor

Teaching Engagements

Chantelle acts as a trial advocacy adviser for the Ryerson Law Practice Program, and co-instructs the Corporate Remedies course at Osgoode Hall Law School’s Professional Development LLM program.

Known for her creative use of litigation technology and excellent advocacy skills, Chantelle provides clients with innovative solutions in complex civil litigation matters.

Chantelle advises clients of all sizes across a wide range of civil litigation matters, including complex commercial disputes, competition disputes, securities disputes and misuse of confidential information claims. A significant portion of Chantelle’s practice involves the defence of national and cross-border class actions, including respecting allegations of anti-competitive conduct. Clients particularly appreciate Chantelle’s practical and analytical approach, as well as her unflappable manner.

Chantelle is at the forefront of the use of litigation technology, and regularly consults on best practices for paperless litigation. A frequent lecturer and author, Chantelle often presents for organizations such as the Law Society of Ontario, the Canadian Bar Association and The Advocates’ Society.

Chantelle sits on the Board of Directors and acts as the Chair of the Governance and Risk Management Committee of Earth Rangers, a not-for-profit organization that educates children about biodiversity and environmental sustainability.

The Estate Trustees of Barry Sherman and Honey Sherman

Acting as counsel to the Estate Trustees of Barry Sherman and Honey Sherman in legal proceedings against Kevin Donovan (Chief Investigative Reporter at the Toronto Star) in regards to a sealing order obtained by the Estate Trustees which restricts public access to materials filed in connection with the routine administration of the Shermans' estates. Leave to appeal to the Supreme Court of Canada has been granted for the Estate Trustees' appeal of the decision of the Ontario Court of Appeal denying the protective order.

Canadian Chamber of Commerce

Acted for the Canadian Chamber of Commerce as an intervener before the Supreme Court of Canada in an appeal concerning the applicability of arbitration clauses to class actions in Ontario.

KSV Kofman Inc.

Acted for KSV Kofman Inc., as monitor for the Urbancorp Group of Companies, in an appeal concerning whether a certain transaction was a fraudulent conveyance or otherwise voidable by the monitor in connection with Urbancorp's CCAA proceedings.

SK Hynix America Inc.

Acting for SK Hynix America Inc. in its defence of multiple class actions across Canada alleging anti-competitive conduct in respect of the sale of dynamic random-access memory (DRAM) chips, including with respect to cross-border issues arising out of parallel U.S. class actions.

Delta Air Lines

Acting for Delta Air Lines in defending a multi-billion dollar proposed class action alleging a conspiracy to constrain the capacity of the passenger airline industry in North America.

Giant Tiger Stores Limited

Acting for Giant Tiger Stores Limited in its defence of multiple class proceedings commenced across Canada (including Ontario, British Columbia, Saskatchewan, Alberta, Manitoba, Québec and the Federal Court) relating to alleged price-fixing of commercial bread products in Canada at the wholesale and retail levels.

Ontario Lottery and Gaming Corporation

Successfully acted for the Ontario Lottery and Gaming Corporation in a judicial review application brought by the City of Niagara and the Region of Niagara Falls concerning the selection process for an operator of the Niagara gaming bundle.

Morgan Stanley Canada Limited

Acted for Morgan Stanley Canada Limited in a class action instituted against 12 global banks based on an alleged conspiracy to artificially fix foreign currency exchange rates.

Ontario Lottery and Gaming Corporation

Acting for the Ontario Lottery and Gaming Corporation (OLG) defending allegations that OLG owes a duty of care to prevent "problem gamblers" from gambling in OLG's commercial casinos.

Kawasaki Motors Corporation, USA

Acting for Kawasaki Motors Corporation, USA in its defence of class actions commenced in Canada alleging price-fixing and misleading advertising in respect of the sale by others of lawn mowers in Canada.

HudBay Minerals

Acted for HudBay Minerals Inc. in a large, complex international arbitration in Lima, Peru arising out of the construction of the Constancia Mine.

Detour Gold Corporation

Acted for Detour Gold Corporation in a securities class action involving alleged breaches of the public disclosure requirements of the Securities Act (Ontario) in relation to the company's production and cost guidance during the ramp-up of the Detour Lake Mine, and to details of one of the company's credit agreements.

Zimmer Biomet Holdings, Inc.

Acting for Zimmer Biomet Holdings, Inc. in defending class action proceedings in the Superior Court of Ontario concerning alleged defects in Biomet's metal-on-metal hip replacement and resurfacing devices.

Robert Schad and Athena Automation Limited

Acted for Robert Schad and his company Athena Automation Limited in defending successfully a series of claims asserted against them for damages and injunctive relief arising from their alleged misuse of confidential information and the breach by Mr. Schad of his non-compete and non-solicitation obligations owed to Husky Injection Molding Systems Limited, a company founded by Mr. Schad half a century ago. All claims asserted by Husky against Mr. Schad and Athena in this "bet the company" case were dismissed by Justice Newbould of the Ontario Superior Court in April 2016, following a lengthy trial in the Commercial List.

Denso Corporation

Acting for Denso Corporation (and related entities) in its defence of dozens of class actions commenced across Canada alleging anti-competitive conduct in respect of the sale of various automotive parts, including contested certification proceedings and with respect to cross-border issues arising out of parallel U.S. class actions.

Agnico Eagle Mines Limited

Acted for Agnico Eagle Mines Limited and certain of its current and former officers and directors in their defence of a multi-jurisdictional class action alleging that the company's public disclosure was false and misleading contrary to Part XXIII.1 of the Ontario Securities Act.

Beijing Matsushita Color CRT Company, Ltd.

Acted for Beijing Matsushita Color CRT Company, Ltd. in defence of class actions commenced in Canada alleging price-fixing in respect of the sales of cathode ray tubes.

Whirlpool

Acted for Whirlpool in defence of class actions commenced in Canada alleging price-fixing in respect of the sales of compressors.

Jack Burke

Successfully represented Canadian cyclist Jack Burke before the International Court of Arbitration for Sport in establishing that Jack had no fault for his ingestion of HCTZ. The decision is one of the first findings of "no fault" rendered by the Court.

Chi Mei Optoelectronics

Acted for Chi Mei Optoelectronics in its defence of multiple class actions commenced across Canada alleging price fixing in respect of the sales of LCD panels, including with respect to cross-border issues arising out of parallel U.S. class actions.

Bulletin

COVID-19 and the Courts: What You Need to Know

May 27, 2020 - Across the globe, courts are rapidly adapting their practices and procedures in response to the COVID-19 pandemic. In a number of jurisdictions, hearings have been adjourned; procedures and timelines for filings have been amended; and limitation periods have been suspended. We have summarized...

Speaking Engagement

Moderator, American Bar Association, “Life After Godfrey: The New Ground Rules for Competition Class Actions in Canada”; Toronto, ON

Apr. 01, 2020

Speaking Engagement

The Law Society of Ontario, Our Civil Justice System: Envisioning Innovation and Change, “Professionalism - The Roles of the Courts and Counsel in Advocacy (How You Can Affect Change)”; Toronto, ON

Feb. 25, 2020

Article

Litigating in the Post-Godfrey World: What You Need to Know About the New Ground Rules for Competition Class Actions in Canada, co-author

Feb. 18, 2020 - The Antitrust Source (American Bar Association)
Read the article.

Speaking Engagement

Ontario Bar Association, Litigation in the Digital Age: A Guide to the Paperless Practice, “How to Prepare For and Conduct Digital Hearings”; Toronto, ON

Feb. 06, 2020

Bulletin

Top Court Expands Scope of Potential Liability in Price-Fixing Class Actions

Sept. 24, 2019 - The Supreme Court of Canada has released its long-awaited decision in two companion appeals that have significant implications for class actions alleging conduct that contravenes the criminal provisions found in Part VI of the Competition Act (Act). In its decision in Pioneer...

Speaking Engagement

Canadian Bar Association, Competition Law Section, “Managing The Civil and Criminal Aspects of A Cartel File”; Toronto, ON

Mar. 07, 2019

Speaking Engagement

Co-chair, Ontario Bar Association, Young Lawyers Division Program, “Your First Civil Trial”; Toronto, ON

Mar. 01, 2019

Article

Welsh v. Ontario: Regaining Predictability in the Settlement and Fee Approval Process, but at What Cost?, co-author

Feb. 25, 2019 - Ontario Bar Association
Read this article.

Ontario Bar Association—The Heather McArthur Memorial Young Lawyers Award (2020)

Osgoode Hall Law School—Alumni Gold Key Award, One-to-Watch (2019)

Lexpert Zenith Award—Celebrating Change Agents in Law (2019)

Benchmark Canada: The Definitive Guide to Canada’s Leading Litigation Firms & Attorneys—Future Star

Financial Times’ North America Innovative Lawyers Report—Top 10 Individuals (2019)

Chambers Canada Award—Litigation Firm of the Year (2018)

Chambers Canada: Canada’s Leading Lawyers for Business—Litigation, General Commercial Department: Ontario (Band 1 for firm)

Bar Admissions

Ontario, 2011

Education

Osgoode Hall Law School, JD (Highest Standing in Trial Advocacy), 2010
Laurentian University, BA (Psychology), 2006

Professional Affiliations

The Advocates’ Society
Young Canadian Arbitration Practitioners

Board Memberships

Earth Rangers

Community Involvement

Earth Rangers, Governance and Risk Management Committee, Chair
Flip Your Wig for Justice (2016), “Champion for Access to Justice”
Ontario Bar Association, Civil Litigation Section Executive, Technology Liaison; Technology and the Courts Sub-Committee, Chair
Ontario Bar Association, Class Action Bench-Bar Liaison Committee
Ontario Bar Association, Class Actions Section Executive, Technology Liaison
Ontario Superior Court of Justice, Commercial List Users’ Committee
Osgoode Hall Law School, Osgoode First Generation Students’ Network, Alumni Mentor
Osgoode Hall Law School, Osgoode Indigenous Students’ Association, Speaker and Mentor
Osgoode Hall Law School, OWN Alumnae Mentorship Program, Mentor
Women’s Law Association of Ontario, Mentor

Teaching Engagements

Chantelle acts as a trial advocacy adviser for the Ryerson Law Practice Program, and co-instructs the Corporate Remedies course at Osgoode Hall Law School’s Professional Development LLM program.