Atty. Mark R. Frederick
Mark leads Miller Thomson’s insurance practice and oversees the defence, coverage, policy drafting and corporate and captive insurance practice at the firm. With over 35 years of representing Lloyd’s of London syndicates, Mark specialises in construction-related professional indemnity defence as well as a E&O defences of a wide range of professionals including insurance brokers, MGA operators, engineers, architects, lawyers, insurance agents and financial professionals on matters pertaining to the business of insurance.
Insurance Law Attorney · 38+ Years Experience
Profile Summary
About Mark R. Frederick at a Glance
Mark R. Frederick is a insurance attorney, practicing at Miller Thomson LLP. They have 38+ years of legal experience, licensed to practice since 1988. Admitted to practice in Ontario (1988), British Columbia (1993), New Brunswick (2012), and Nunavut (2017). Educated at Queen’s University (LL.B., 1986). Recognitions include Best Lawyers in America — Insurance Law (2026).
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About Mark R. Frederick
- Mark leads Miller Thomson’s insurance practice and oversees the defence, coverage, policy drafting and corporate and captive insurance practice at the firm
- With over 35 years of representing Lloyd’s of London syndicates, Mark specialises in construction-related professional indemnity defence as well as a E&O defences of a wide range of professionals including insurance brokers, MGA operators, engineers, architects, lawyers, insurance agents and financial professionals on matters pertaining to the business of insurance
- He also defends manufacturers of chemicals and other goods in product liability claims and practises in the area of directors’ and officers’ liability
- Acting for clients in Canada, the United States, and England, Mark advises insurers on issues relating to excess liability
- Mark is a qualified arbitrator with the London, England-based Chartered Institute of Arbitrators and represents clients in both arbitrations and mediations
- He is called to the bar in Ontario, British Columbia, Alberta, New Brunswick and Nunavut Territory, and has practiced before courts of all levels (save Quebec) across Canada and in the Carribean
- Mark is recognized by The Best Lawyers in Canada for Insurance Law (2021-2024), Chambers Canada for Insurance: Dispute Resolution (2018-2024) and in Benchmark Canada as a Litigation Star (2022-2024)
Practice Areas Explained
Mark R. Frederick's Areas of Legal Practice
Each practice area below reflects the types of cases Mark R. Frederick handles, with a practical overview of what that area of law involves and how it may apply to your situation.
Insurance Law
Insurance attorneys for coverage disputes, bad faith claims, denied claims, and policy disputes.
Mark R. Frederick is one of 120,903 insurance attorneys indexed nationally. Browse insurance attorneys →
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Professional Profile
Why Clients in Your Area Choose Mark R. Frederick
Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish Mark R. Frederick's practice in the field of insurance.
Decade-Tested Legal Experience
Mark R. Frederick brings 38+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.
Multi-State Bar Admission
Licensed in Ontario, British Columbia, and New Brunswick, Mark R. Frederick can represent clients in cases that span state lines or require counsel in multiple jurisdictions.
Focused Insurance Practice
Concentrating on insurance means Mark R. Frederick's knowledge of relevant statutes, case law, and procedural nuances stays current — unlike generalist practices that spread attention across unrelated fields.
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