About Our Lawyers

M. James Mason

M. James Mason

M. James Mason was called to the bar in 1986 and was a founding partner of the firm originating in 1990. Mr. Mason is now a senior partner in Mason Poratto-Mason LLP, with its current complement of highly trained professionals, since 2003.

Mr. Mason has litigated hundreds of personal injury cases since 1986, with a focus on personal injury, slip and falls and motor vehicle accidents. Mr. Mason also takes on commercial, estate litigation, wills and powers of attorney and real estate.

Mr. Mason takes great pleasure in battling the insurance industry and will obtain the results you are looking for!

Bachelor of Arts - Laurentian University, 1979
Commerce Diploma Business Administration - Laurentian University, 1980
Bachelor of Laws - University of Windsor, 1984
Certificate in Mediation - University of Windsor, 2008

Professional Data
Law Society of Upper Canada, 1986
Sudbury District Law Association, 1986
Member of the Canadian Bar Association
Past President and Executive of Sudbury District Law Association

Former Member of the Ontario Trial Lawyers Association

Past Member of the Canadian Bar Association

Community Involvement
Past board member of Canadian Charities Foundation
Past cabinet chair for lawyers Sudbury United Way Campaign

In Addition

As well, Mr. Mason has handled cases in the Ontario Court of Justice, Superior Court of Justice, Ontario Court of Appeal and the Ontario Insurance Commission, both Mediation and Arbitration.

Lise Poratto-Mason


Lise Poratto-Mason has extensive experience in both the public and private practice of law. Her experience as a former Municipal and Hospital Solicitor and in private practice enables her to provide legal advice and services in municipal, health care, institutional and labour and employment law. Ms. Poratto-Mason also maintains an active real estate and wills and estate practice.

Bachelor of Arts - Laurentian University, 1980
Diploma in Business Administration - Laurentian University, 1981
Diploma in Public Administration and Master of Business Administration - University of Windsor, 1983
Bachelor of Laws - University of Windsor, 1986

Professional Data
Law Society of Upper Canada, 1988
Employer Nominee – Various Boards of Arbitration
Canadian Bar Association – Ontario
                                                                                Member of Sudbury & District Law Association

Civil and Community Involvement
2013 to present - Past Chair and Executive Board Member of the Mason Vale Hospice Board and Ethics Committee
2013 to present - Chair and Board Member of the Greater Sudbury Airport Board
2009 to 2012 - Member Canada Pension Plan Review Tribunal
2008 to present - National Committee of the Women Moving Woman Campaign of the Canadian Women's Foundation
2007 to present - Board Member of the FedNor Ministerial Advisory Board
2004 to 2009 - Executive Member of the Sudbury & District Law Association
2004 to 2007 - Executive and Board Member of the Greater Sudbury Chamber of Commerce
2003 to 2004 - Board Member of the M.S. Society
2001 to 2003 - Board Neureka (Northern Centre for Biotechnology and Clinical Research)
2001 to 2003 - Hospital Representative on the Neureka Board, Senior Management Lead on the Hospital's Research Ethics Board and Member of its Ethics and Quality Assurance Committes
1998 to 2003 - Member, Ethics Committee; Sudbury Regional Hospital
1996 to present - Employer Nominee - Various Boards of Arbitration
1996 to 1997 - Chair, Municipal Sector, United Way
1992 to 1997 - Board Member - Laurentian Hospital
1992 to 1997 - Member, HRC Central Funding Appeals Committee, Ontario Hospital Association
1988 to present - Participating Member - Canadian Bar Association
1988 to present - Participating Member - Sudbury & District Law Association

In Addition

Ms. Poratto-Mason represents both employers and employees in labour and employment law matters in various levels of the courts and at administrative tribunals. Ms. Poratto-Mason has also been appointed as an employer nominee on various boards of arbitration. Ms. Poratto-Mason is fluent in both English and French.

Adam Mason 

Adam Mason has a keen interest in providing practical and reasoned solutions to clients’ legal issues. He has broad experience in various areas of law as a result of his time working as the judicial law clerk for the Northwest Region of the Ontario Superior Court of Justice and as a law student at a full-service law firm in Thunder Bay, Ontario. His areas of focus include civil ligation, estate litigation, corporate commercial litigation, wills and estates, trust law, intellectual property law, administrative law, indigenous legal issues, and constitutional law. Adam’s time as a judicial law clerk provides him with a unique perspective on the intricacies of the litigation process and how best to deal with each client’s individual case.

Adam graduated from Laurentian University with a Bachelor’s degree in English Literature and Rhetoric, and he received his Master’s degree in English Literature from Carleton University. Before attending law school, Adam worked as an Archival Assistant at the Laurentian University Archives where he gained a wealth of insight into the diverse history of the community in Sudbury, Ontario, and surrounding areas.

Adam received his Juris Doctor from the Bora Laskin Faculty of Law at Lakehead University in 2018. He received the Dean’s Medal as the highest-ranking student in his graduating class. He also received awards as the highest-ranking student overall in his second year of law school and as the second highest-ranking student overall in his first year. Additionally, Adam received awards for first class standing in Contract Law, Tort Law, Constitutional Law, Civil Practice, and Aboriginal Law.

Adam was called to the Bar in Ontario in September 2018.

Areas of Focus
Civil Litigation
Estate Litigation
Corporate Commercial Litigation
Wills, Estates, and Powers of Attorney
Trust Law
Tax Litigation
Intellectual Property Law
Administrative Law
Constitutional Law
Indigenous Legal Issues
Labour and Employment
Real Estate

B.A. (Hons.) – Laurentian University, 2010
M.A. – Carleton University, 2012
J.D. – Bora Laskin Faculty of Law, Lakehead University, 2018

Professional Data
Judicial Law Clerk – Superior Court of Justice, Ontario, Northwest Region
Law Student – Buset LLP, Thunder Bay, Ontario

40 Larch Street, Suite 202,

Sudbury, Ontario P3E 5M7

Fax: 705-560-8803
Toll Free: 1-888-326-3335
Email: info@mpmlaw.ca

Monday – Friday: 9:00AM – 5:00PM

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