Ivan J. Derer, K.C.

Marc Matras is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Commercial Litigation and Insurance Law. Marc, who practices law in Calgary, Alberta, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Marc is held by other top lawyers in the same geographic and legal practice area.

Scott Sangster leads the Banking & Finance group in Calgary and is a foremost banking and finance lawyer, with extensive international and domestic experience in both bilateral and syndicated transactions. He structures and advises lenders, institutional and private, in implementing a variety of debt financing transactions, including complex inter-creditor and priority arrangements. Practicing in the private equity, agribusiness, energy, real estate, logistics (including equipment and air...

Jessie Larter is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law. Jessie, who practices law in Calgary, Alberta, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jessie is held by other top lawyers in the same geographic and legal practice area.

Curtis is a partner at Carbert Waite LLP, Fellow of the Chartered Institute of Arbitrators, and Co-Chair of the firm’s Commercial Litigation Practice. Curtis has extensive experience in a wide variety of commercial litigation and arbitration matters, including international arbitration and litigation, defamation, and estate litigation. His clients include multinational corporations, energy companies, construction companies, family-run businesses, and individuals. He also acts for US and...

Maureen McCartney-Cameron is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation. Maureen, who practices law in Calgary, Alberta, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Maureen is held by other top lawyers in the same geographic and legal practice area.

Steve Leitl's practice covers a broad range of commercial litigation matters, with an emphasis on securities, M&A, directors'/officers' liability, class actions and internal investigations. Mr. Leitl has conducted proceedings in the courts of Alberta, Ontario, Manitoba and Canada (Federal Court) and appeals in the Ontario Court of Appeal and Alberta Court of Appeal. He has conducted various regulatory proceedings before the Ontario, Alberta and Manitoba securities commissions and the Albe...

Blake Hafso is a top attorney recognized by Best Lawyers in the practice area(s) of Labour and Employment Law. Blake, who practices law in Calgary, Alberta, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Blake is held by other top lawyers in the same geographic and legal practice area.

I am an arbitrator, mediator, and litigator and have practiced from Calgary, Canada, for over 30 years. My full biography is available on my firm's website at: https://jssbarristers.ca/litigators/sabri-m-shawa/

Karen's practice focuses on complex commercial, construction, and contract litigation and arbitration. Karen leverages her over 20 years’ of experience to advise clients on a broad range of complex litigation and arbitration disputes. Providing counsel to clients in the energy, agricultural, chemical and construction industries, she has been involved in the resolution of a variety of claims, including multi-party actions, contract disputes, estate litigation, product liability claims, a...

Greg has successfully litigated a wide variety of civil litigation matters and commercial litigation matters including energy related matters. Greg’s trial and appeal experience is extensive and he has appeared before every level of court in Alberta. Greg has also appeared before several administrative tribunals. He has been involved in the resolution of numerous disputes, using mediation, judicial dispute resolution and other ADR forums. Greg became a partner in Parlee McLaws in 1990. ...