O&B’s litigation team, led by accomplished attorney Michael Brown, former Deputy Bureau Chief in the Office of the Special State Prosecutor, represents corporate and entrepreneurial clients facing critical and complex litigation. We understand that litigation results from numerous issues and problems, and focus on those underlying factors to develop the most effective strategies to efficiently resolve disputes in a manner consistent with our clients’ objectives.
As one of the insurance industry’s pre-eminent law firms, and the only insurance practice on Long Island ranked “Tier 1” by U.S. News & World Report, Ohrenstein & Brown is known for its comprehensive corporate and regulatory insurance practice, complemented by a respected insurance litigation practice, that brings in-depth experience and understanding of the insurance industry to the representation of insureds, industry groups, brokers, and insurance companies.
Our Business Group counsels publicly and privately held enterprises with respect to the formation of business organizations, including corporations, partnerships and limited liability companies; the negotiation and consummation of a wide variety of agreements, including shareholder and limited liability operating agreements; agreements with suppliers, customers, key executives and property lessors and lessees; agreements covering the purchase and sale of businesses; and financing including private placements.
Led by former New York State Senate Minority Leader Manfred Ohrenstein, the firm’s Government Affairs practice leverages its strong relationships at all levels of city, state, and federal government on behalf of clients doing business with government or whose business is impacted by legislation, regulations, or other public policy decisions. From government procurement to real estate development to all issues intersecting with government, Ohrenstein & Brown offers clients an unmatched level of experience and success.

“Mike [Brown] is an extremely effective and tough litigator. He's also a strategic thinker both inside and outside the courtroom.” - Don DeCarlo, Director, AmTrust Financial Services, Inc. and former Senior Vice President and General Counsel of Travelers Group“Mike [Brown] is an extremely effective and tough litigator. He's also a strategic thinker both inside and outside the courtroom.”

- Don DeCarlo, Director, AmTrust Financial Services, Inc. and former Senior Vice President and General Counsel of Travelers Group

While All People Are Equal Before The Law, Their Attorney Is What Makes The Difference.


Manfred Ohrenstein

Manfred Ohrenstein, a founding partner and a former Legislative Leader of the N.Y. State Senate, serves as a strategic consultant and government affairs representative for large and medium sized companies.

Michael D. Brown

Michael D. Brown, founding partner is an accomplished litigator and trusted counselor. His career has been one of distinction in the litigation, corporate and insurance regulatory areas.

Matthew Bryant

Matt is an experienced and creative litigator with a track record of success as counsel for both plaintiff and defense. These results not only speak for themselves but have earned him a preeminent peer review ranking as an effective and successful litigator.

Brian R. Gerstein

Counsel to the firm, Brian R. Gerstein represents clients in commercial litigation, municipal court criminal defense and appellate practice.


Latest News

22 Mar
After more than five years, a Nissan dealership has come to the end of the road in its quest to have its insurer, Tower National Insurance, pay for property damage and loss of income the dealership suffered as a result of Hurricane Sandy in 2012.
13 Mar
The Court of Appeals for the Third Circuit recently declined to lift an injunction restricting two former employees of ADP from soliciting ADP’s clients on behalf of their new employer.


  • Fred has a very broad “customer base.” He has extensive relationships and has a lot of experience. He knows the process and how to expedite matters, and that facilitates addressing issues efficiently.
    Warren Haber
    Chairman of the Board and Chief Executive Officer, Founders Equity
  • Mike is a very well-prepared, insightful, determined litigator. He is always available and gives you a lot of insight. He listens carefully to what to the client wants and proceeds from there.
    Terence Kelleher
    President and CEO, Combined Coordinating Counsel
  • We had a large development project and we needed different levels of government to communicate with each other and find ways to work together to achieve a common goal. The problem is they don’t normally do that. One of Fred’s Ohrenstein’s specialties is getting people on the federal, state, and local levels of government to talk with each other and recognize common agendas. Fred has been extremely helpful to us in that respect.
    John Oster
    President, Edgemere Development, Inc.
  • Mike Brown is a strategic resource. He is a true counselor as well as a litigator. If a matter shouldn’t be litigated, Mike will tell you that. But when you do need a litigator, Mike is a tough, knowledgeable and feared one.
    Stephen B. Ungar
    Senior Vice President, General Counsel and Secretary, AmTrust Financial Services, Inc.
  • They are not only great lawyers, but they are very creative when they have to be to solve problems.
    Don DeCarlo
    Director, AmTrust Financial Services, Inc.; Former Senior Vice President and General Counsel, Travelers Group

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