Atty. Sean M. Sullivan
Sean M. Sullivan is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Commercial Litigation and Insurance Law.
Profile Summary
About Sean M. Sullivan at a glance
Sean M. Sullivan is a business, litigation, and insurance attorney based in Kitchener, Ontario, practicing at Gowling WLG. Recognitions include Best Lawyers in America — Corporate and Commercial Litigation (2026) and Best Lawyers in America — Insurance Law (2026). Serands clients in Kitchener, ON and the surrounding metropolitan area.
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About
- Sean M. Sullivan is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Commercial Litigation and Insurance Law
- Sean M., who practices law in Kitchener, Ontario, has been recognized since 2022
- This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sean M. is held by other top lawyers in the same geographic and legal practice area
Practice Areas Explained
Sean M. Sullivan's Areas of Practice
Each practice area below reflects the types of cases Sean M. Sullivan handles, with a brief overview of what that area of law covers.
Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.
Sean M. Sullivan is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Ontario →
Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.
Sean M. Sullivan is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Ontario →
Insurance attorneys for coverage disputes, bad faith claims, denied claims, and policy disputes.
Sean M. Sullivan is one of 121,912 insurance attorneys indexed nationally. Browse insurance attorneys in Ontario →
Jurisdictional Context
Why local counsel matters in Ontario
Practicing law in Ontario. Legal matters in Ontario are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Kitchener are typically filed in the local municipal court or the appropriate Ontario state district court, depending on subject matter and amount in controversy. An attorney licensed in Ontario brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Ontario courts without local counsel or pro hac vice admission.
Looking for additional Ontario attorneys? Browse all attorneys in Kitchener or all attorneys in Ontario.
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