Atty. John Polyzogopoulos

Atty. John Polyzogopoulos

John helps clients solve their business and personal disputes: Corporate and Commercial Litigation - Business partner and shareholder disputes, breach of contract, environmental contamination disputes, franchise disputes, debt collection, commercial tenancy disputes, construction disputes, real estate disputes, product liability, bankruptcy and receiverships Estate Litigation - Disputes between heirs/beneficiaries and executors/estate trustees Sports Law - representing amateur hockey and other sport organizations from the local to the national level, as well as athletes regarding internal gove

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Profile Summary

About John Polyzogopoulos at a glance

John Polyzogopoulos is a business and litigation attorney, practicing at Blaney McMurtry LLP. Recognitions include Best Lawyers in America — Corporate and Commercial Litigation (2026).

Verified attorney profile · Updated June 2026

About

John helps clients solve their business and personal disputes:

  • Corporate and Commercial Litigation - Business partner and shareholder disputes, breach of contract, environmental contamination disputes, franchise disputes, debt collection, commercial tenancy disputes, construction disputes, real estate disputes, product liability, bankruptcy and receiverships
  • Estate Litigation - Disputes between heirs/beneficiaries and executors/estate trustees
  • Sports Law - representing amateur hockey and other sport organizations from the local to the national level, as well as athletes regarding internal governance, discipline and dispute resolution
  • Family Business Litigation – Corporate divorce between spouses when both their business and marriage partnerships dissolve

John helps clients resolve their disputes in a variety of ways:

  • Court proceedings, private arbitrations and other tribunals
  • Negotiation
  • Mediation

John’s court and tribunal experience:

  • Supreme Court of Canada
  • Ontario Court of Appeal, Divisional Court and Superior Court
  • Nunavut Court of Justice
  • Administrative tribunals
  • Private arbitrations

Other types of matters John helps his clients with:

  • Appeals – John can assist with appeals before the Ontario Court of Appeal and other appellate courts
  • Professional Negligence and Discipline – accountants, lawyers, engineers, real estate agents, financial advisors, insurance brokers, dental hygienists and others
  • Defamation and Breach of Privacy
  • Enforcing Foreign Judgments and Jurisdictional Issues
  • Fraud
  • Injunctions and other Extraordinary Remedies

John is the editor of the firm’s blog entitled “Blaneys Appeals”, which is dedicated to summarizing all civil law decisions released by the Court of Appeal for Ontario on a weekly basis. The blog receives several thousand reads a month and is circulated widely through various legal information media, including Mondaq, Lexology, CanLii and the Ontario Bar Association website.

John also co-authored two chapters in Civil Procedure and Practice in Ontario, 2nd ed (CPPO), published by the Canadian Legal Information Institute (CanLII). CPPO is a free online annotated version of Ontario’s Rules of Civil Procedure. John also edits the firm’s Commercial Litigation Update newsletter.

Practice Areas Explained

John Polyzogopoulos's Areas of Practice

Each practice area below reflects the types of cases John Polyzogopoulos handles, with a brief overview of what that area of law covers.

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

John Polyzogopoulos is one of 452,854 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 Polyzogopoulos is one of 409,070 litigation attorneys indexed nationally. Browse litigation attorneys →

Frequently Asked

Common questions about John Polyzogopoulos

What practice areas does John Polyzogopoulos handle?
John Polyzogopoulos focuses on business, litigation. Each practice area listed reflects experience handling cases of that type in their licensed jurisdictions.
How can I contact John Polyzogopoulos for a consultation?
You can contact John Polyzogopoulos directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has John Polyzogopoulos received?
John Polyzogopoulos's notable recognition includes: Best Lawyers in America — Corporate and Commercial Litigation.

Awards

Best Lawyers in America — Corporate and Commercial Litigation
- 2026

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