Cummings & Lockwood LLC

37 Best Lawyers awards

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Awarded Practice Areas

Commercial Litigation

Biography

John W. Cannavino is a Principal in Cummings & Lockwood's Litigation Group and is based in the Stamford office. He brings over 40 years' of broad-based experience to his litigation and trial practice, representing both plaintiffs and defendants. He has extensive experience in complex commercial litigation, including securities litigation; litigation between investors and hedge fund managers; insurance coverage disputes; corporate, partnership, and limited liability company disputes and dissolutions; contract disputes; environmental litigation; real estate litigation, including lease, restrictive covenant, and easement disputes; real property tax appeals; Connecticut State tax appeals, including domicile litigation; trustee and fiduciary litigation, including litigation regarding self-settled asset protection trusts; and restrictive covenant and trade secrets litigation. He has tried numerous cases in state and federal courts, including jury trials, as well as arbitrations. He has also acted as co-counsel in a number of matrimonial cases, providing assistance on complex trust and commercial issues.

Cummings & Lockwood LLC

37 Best Lawyers awards

Cummings & Lockwood LLC logo

Overview

  • Syracuse University, J.D., graduated 1977
  • Binghamton University, B.A., graduated 1973

  • Connecticut, 1977

  • Connecticut Bar Foundation - Life Fellow
  • Fairfield County Bar Association - Member
  • The Raymond E. Baldwin American Inn of Court - Member
  • Stamford Downtown Special Services District - Board of Commissioners, Member

  • United States Tax Court, 2008
  • United States District Court, District of Connecticut
  • United States District Court, Southern District of New York
  • United States District Court, Eastern District of New York
  • Connecticut, 1977
  • Connecticut Bar Foundation - Life Fellow
  • Fairfield County Bar Association - Member
  • The Raymond E. Baldwin American Inn of Court - Member
  • Stamford Downtown Special Services District - Board of Commissioners, Member
  • Syracuse University, J.D., graduated 1977
  • Binghamton University, B.A., graduated 1973
  • United States Tax Court, 2008
  • United States District Court, District of Connecticut
  • United States District Court, Southern District of New York
  • United States District Court, Eastern District of New York

Client Testimonials

Awards & Focus

Recognized in The Best Lawyers in America® 2026 for work in:
  • Commercial Litigation
Additional Areas of Practice:
  • Litigation - Banking and Finance
  • Litigation - Construction
  • Litigation - Environmental
  • Litigation - Intellectual Property
  • Litigation - Real Estate
  • Litigation - Securities
Awards:
  • Connecticut and New England Super Lawyers, 2006 - Present
  • Martindale-Hubbell, AV Rated

Additional Information

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Case History

Cases
  • Matters
  • Representation of a lender in a suit to enforce the lease of a corporate headquarters resulting in a verdict of $7.7 million
  • Representation of investors in a private equity fund in a case involving a fund manager who was taking improper fees, resulting in a finding that the fund manager and its principal had converted fund assets and breached their fiduciary duties and awarding $5.8 million in damages
  • Representation of the purchaser of a spring company in a suit against the seller for fraud, resulting in an $8 million dollar judgment against the seller after a jury trial
  • Representation of numerous commercial property owners in appealing municipal tax assessments in Connecticut
  • Representation of the owner of a fish farm off the coast of Maine which was damaged by a hurricane in a suit against its insurer, resulting in a substantial verdict against the insurer
  • Representation of numerous owners of closely-held businesses in shareholder, LLC, and partnership disputes
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