Atty. John P. Sullivan
John is a partner at Harper Grey and a member of our Commercial Litigation Group, Family and Insurance Law Groups. He is also the Canadian Litigation and ADR Co-Chair for the TAG International Alliance.
Corporate And Commercial Litigation Attorney · 30+ Years Experience
Profile Summary
About John P. Sullivan at a Glance
John P. Sullivan is a business and litigation attorney, practicing at Harper Grey LLP. They have 30+ years of legal experience, licensed to practice since 1996. Admitted to practice in British Columbia (1996). Educated at University of British Columbia (LL.B., 1995). Recognitions include Best Lawyers in America — Corporate and Commercial Litigation (2026), Best Lawyers in America — Awards: (2026), and Best Lawyers in America — Benchmark Canada in 2014, 2015, 2016 - recognized as a “Local Litigation Star” in British Columbia (2026).
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About John P. Sullivan
- John is a partner at Harper Grey and a member of our Commercial Litigation Group, Family and Insurance Law Groups
- He is also the Canadian Litigation and ADR Co-Chair for the TAG International Alliance
- John has written and lectured on a variety of commercial litigation topics
- He has been published in both Canada and the US in such journals as the Canadian Bar Review, The Washington Bar News, and the Oregon Creditor-Debtor Newsletter
- He has been a guest lecturer for the Canadian Institute as well as the BC Continuing Legal Education Society
- John has a passion for challenging litigation, and has earned a reputation for tireless efforts in defence of his clients’ rights
Practice Areas Explained
John P. Sullivan's Areas of Legal Practice
Each practice area below reflects the types of cases John P. Sullivan handles, with a practical overview of what that area of law involves and how it may apply to your situation.
Business & Corporate Law
Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.
John P. Sullivan is one of 497,491 business attorneys indexed nationally. Browse business attorneys →
Civil Litigation
Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.
John P. Sullivan is one of 450,750 litigation attorneys indexed nationally. Browse litigation attorneys →
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Professional Profile
Why Clients in Your Area Choose John P. Sullivan
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 John P. Sullivan's practice in the field of business and litigation.
Decade-Tested Legal Experience
John P. Sullivan brings 30+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.
Broad Practice Area Coverage
Covering business and litigation, John P. Sullivan can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.
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