The Long Island-based Commercial Litigation attorneys at Barnes & Barnes, P.C. pursue complex business claims in the Commercial Division of the New York State Supreme Court, Federal Court and various arbitration forums. Our decades of experience in Commercial Litigation helps us deliver pragmatic strategies to achieve solutions which align with the client’s business objectives. In that regard, we achieve timely and relevant results on a cost-effective, results-oriented manner.

Case Studies

Discover a few of the successes Barnes & Barnes has achieved for its clients between New York City and Montauk.

How We Help Our Clients

Disputes between businesses

commercial litigation

breach of contract


Business Fraud

cybersecurity & data breach litigation

Interference with business relationships

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what our clients say
"The attorneys at B&B are always responsive to address our needs. More importantly, their keen insight and analysis helps our company minimize risk and avoid potential liabilities."


"Our company is a world leader in North Atlantic Live Lobster harvesting and distribution based in Nova Scotia, the largest Area 6 commercial operation on the New England Coast. Last year..."


"I retained Barnes & Barnes, P.C. after my Corporation leased an airplane to a Defendant who ceased making monthly payments and refused to return the aircraft in good working..."


meet the team

Leo K. Barnes, Jr.

Matthew J. Barnes

Matthew J. Barnes

Ryan J. McMahon

Ryan J. McMahon

Sonia A. Russo


Morgan E. Weber


2023 Long Island Business News reader rankings winner x4

Best Construction<br />
Law Firm

Best Construction Law Firm

Best Law Firm<br />

Best Law Firm (Overall)

Best Business<br />
Formation Law Firm

Best Business Formation Law Firm

Best Litigation Law Firm

Best Litigation Law Firm


Mechanic’s Liens and Construction Law in New York

In the gameshow “The Price Is Right,” if a contestant bids over the price of the item, they lose the whole game.  Mechanic’s liens have a similar restriction – if a contractor or subcontractor claims the value of their work is higher than it is, then the owner can...

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