Lax O'Sullivan Lisus Gottlieb LLP > Toronto, Canada > Firm Profile

Lax O'Sullivan Lisus Gottlieb LLP

Canada > Dispute resolution Tier 1

Lax O’Sullivan Lisus Gottlieb LLP is one of Canada’s premier dispute resolution boutiques, and its team houses ‘some of the most creative and tactfully aggressive lawyers in Canada‘. The group frequently represents clients in complex commercial disputes and public law cases at trial, arbitration and appellate courts across the country, and before the Supreme Court of Canada. One of the most significant recent cases for the Toronto-based team saw Rahool Agarwal and practice co-head Jonathan Lisus act as lead counsel to Zydus Pharmaceuticals as defendant in a class action against the world’s leading generic drug makers alleging anti-competitive behaviour, including participating in a price-fixing cartel. Heading the department alongside Lisus is Matthew Gottlieb, ‘one of the top litigators in the country‘. Paul Fruitman is another name to note, whose eclectic practice includes frequently acting for healthcare institutions and professionals in civil and regulatory proceedings. Shaun Laubman is among the firm’s future stars and is particularly active in real estate disputes, an area that is also among the strengths of fellow up-and-coming partner Nadia Campion. Andrew Winton was singled out for praise by clients and had a busy 2021 in insolvency and restructuring, shareholder and employment cases.

Practice head(s):


‘The team at Lax O’Sullivan Lisus Gottlieb LLP are the best in their field. The are always thoroughly prepared for any hearings, arguments or trials. In my opinion, their professionalism and preparedness makes them always look superior to their opposing council. They always do an amazing job of preparing their witnesses and in drafting their affidavits. Their written submissions are always well researched and professionally packaged.’

‘Matt Gottlieb is a terrific lawyer, highly skilled and strategic. He provides superb service and he is a trusted advisor.’

‘Andrew Winton is a very strong litigator who is client focused.’

‘Matt Gottlieb is one of the top litigators in the country. He understands each case in unique and creates a strategy for every option.’

‘Jonathan Lisus is a standout for his ability to drive cases. Lisus is a hardworking and convincing advocate who isn’t afraid to take on the toughest cases and effectively turn the tables.’

‘The lawyers at LOLG are passionate about what they do. Some of the most creative and tactfully aggressive lawyers in Canada. Ability to drive high settlement numbers through both unique and convincing case theories. LOLG specializes in big litigation.’

‘Shaun Laubman was outstanding and very attentive to our needs.’

‘Matthew Law is the most exceptional lawyer I have ever worked with. He is an extremely talented lawyer who is quick on his feet, a top notch litigator who does an amazing quick study of the issues and a case.’

Key clients

Sears Canada

Nortel Networks

KingSett Capital

Canadian Overseas Petroleum

Mizrahi Developments

PWC Canada

KingSett Mortgage

Purdue Pharma

DentalCorp Health Services

Canadian Network of Operators Consortium (CNOC)

Credential Qtrade Securities

Dragados Canada


SNC-Lavalin Constructors

Rideau Transit Group General Partnership

Rideau Transmit Maintenance General Partnership

Gospel for Asia

Hudson’s Bay Company

KSV Restructuring

Nordik Windows

Pace Credit Union

Seelster Farms et al.

Zydus Pharmaceuticals

Work highlights

  • Assisting Warren K. Winkler, the court appointed mediator in the Imperial Tobacco, JTI-MacDonald, and Rothmans, Benson & Hedges CCAA proceedings, with mediating a global resolution of the ongoing tobacco litigation.
  • Advising J. Douglas Cunningham Q.C. in his capacity as litigation trustee to Sears Canada pursuing claims brought against former directors and shareholders of the company.
  • Representing Canadian Network Operators Consortium in an appeal by incumbent telecoms companies to a decision of the Canadian Radio-Television and Telecommunications Commission relating to the rates at which incumbent companies can charge smaller competitors for wholesale internet services.

Canada > Restructuring and insolvency Tier 4

Lax O’Sullivan Lisus Gottlieb LLP, which is a boutique litigation firm in Toronto, is frequently engaged by leading commercial law firms to act as trial co-counsel in major bankruptcy and insolvency cases. The firm has been taken on for a number of high-profile matters, including the Purdue Pharma and Big Tobacco insolvency cases. It acts for a full range of stakeholders, including debtors, creditors and court monitors. Matthew Gottlieb and Jonathan Lisus co-head the practice.

Practice head(s):

Key clients

Sears Canada

Purdue Pharma

Hudson’s Bay Company

KSV Restructuring Inc

J. Douglas Cunningham, Q.C

Work highlights

  • Appointed as counsel to the court-appointed mediator in the Imperial Tobacco Limited, JTI-MacDonald Corp. and Rothmans, Benson & Hedges Inc. CCAA proceedings.
  • Appointed litigation investigator by the Ontario Superior Court of Justice to investigate potential claims on behalf of Sears Canada to increase assets within the estate and to review payments made to shareholders.
  • Serving as counsel to the Sackler Families in the Purdue Pharma CCAA proceeding and proposed national class action.

Lax O’Sullivan Lisus Gottlieb (LOLG) is Canada’s premier counsel firm. The firm’s lawyers handle the most complex commercial disputes and public law cases. They carry a robust trial, arbitration and appellate practice across the country and in the Supreme Court of Canada.

LOLG is regularly engaged as trial and appellate co-counsel by peer law firms, and as court officers in large and sensitive litigation mandates. The firm also acts as counsel in insolvency cases, class actions, securities litigation and administrative law matters, as well as infrastructure, franchise, employment and health law disputes.

LOLG also has one of Canada’s leading restructuring & insolvency practices. The firm’s insolvency counsel are ranked among the top nationally and have material roles in Canada’s largest and most complex insolvency proceedings and restructurings.

LOLG’s practitioners are leaders at the bar, holding positions on the Chief Justice of Ontario’s Advisory Committee on Professionalism and the Supreme Court Advocacy Institute, and fellowships in elite trial organizations. Its associates are of the highest caliber, recruited primarily from judicial clerkships at the Supreme Court of Canada, provincial Courts of Appeal and the Commercial List of the Superior Court of Justice. LOLG’s partners are among the most consistently recommended counsel in Canada and represent clients in Canada, the United States, and from overseas.

For further information visit

Department Name Email Telephone
Managing Partner Matthew Gottlieb 416 644 5353
Partner Jonathan Lisus 416 598 7873
Photo Name Position Profile
Mr Rahool Agarwal photo Mr Rahool Agarwal Rahool’s practice focuses on complex commercial and civil litigation, including class actions,…
Lars Brusven photo Lars Brusven Lars has represented clients in a broad range of matters including commercial…
Mr Paul Fruitman photo Mr Paul Fruitman Paul’s commercial litigation practice focuses on contract disputes, infrastructure and construction disputes,…
Mr Matthew Gottlieb photo Mr Matthew Gottlieb Matthew Gottlieb practises business litigation including corporate and commercial disputes, insolvency and…
Mr Shaun Laubman photo Mr Shaun Laubman Shaun practises corporate commercial litigation, including shareholder and partnership disputes, fraud cases,…
Mr Jonathan Lisus photo Mr Jonathan Lisus Jonathan’s practice focuses on commercial and public law trial and appellate litigation.…
Terrence O’Sullivan photo Terrence O’Sullivan Terry practices dispute resolution and is frequently retained as sole arbitrator, party…
Mr Andrew Winton photo Mr Andrew Winton Andrew Winton is a partner at Lax O’Sullivan Lisus Gottlieb LLP. He…
IBA (International Bar Association)
International Academy of Trial Lawyers
ABA (American Bar Association)