Martin O'Shea

Tom Hanna is a native of Keene and has practiced law there since becoming a member of the New Hampshire Bar in 1980. Over the past 40 years, he has become one of New Hampshire’s leading land use lawyers. His deep experience in this field includes countless appearances before zoning and planning boards, representation of real estate developers, landowners, neighbors, and towns, and virtually every other aspect of real estate law. He has been the point person for the permitting of hospita...

Demetrio Aspiras is a litigator who specializes in complex civil litigation. He represents clients in high-stakes disputes across a range of areas including corporate, education, municipal, Right to Know, and intellectual property. Demetrio has extensive experience in state and federal courts, at both the trial and appellate levels. He is highly skilled at assessing and managing legal risk, counseling clients on the risks and rewards of litigation, and devising novel resolutions to clients&rs...

Andrew Piela is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law. Andrew, who practices law in Nashua, New Hampshire, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Andrew is held by other top lawyers in the same geographic and legal practice area.

Marrielle B. Van Rossum is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law and Medical Malpractice Law - Defendants. Marrielle B., who practices law in Manchester, New Hampshire, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Marrielle B. is held by other top lawyers in the same geographic and legal practice area.

Timothy M. Harrington is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense: General Practice and DUI / DWI Defense. Timothy M., who practices law in Dover, New Hampshire, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Timothy M. is held by other top lawyers in the same geographic and legal practice area.

Laura Tetrault is a top attorney recognized by Best Lawyers in the practice area(s) of Elder Law and Trusts and Estates. Laura, who practices law in Manchester, New Hampshire, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Laura is held by other top lawyers in the same geographic and legal practice area.

Margaret has over twenty-five years of experience concentrating on high-asset and complex divorce cases. Margaret’s clients include business owners, public figures, elected officials, executives of publicly traded companies, successful inventors, tech entrepreneurs, attorneys, doctors, dentists, retirees, those with generational wealth, and many others. Her cases regularly involve issues relating to the valuation and division of complex assets such as business interests, private equity,...

Kevin F. Dugan is a top attorney recognized by Best Lawyers in the practice area(s) of Medical Malpractice Law - Plaintiffs and Personal Injury Litigation - Plaintiffs. Kevin F., who practices law in Manchester, New Hampshire, has been recognized since 2006. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kevin F. is held by other top lawyers in the same geographic and legal practice area.

A founding shareholder of the firm, Michael leads the Litigation Practice Group, specializing in business and commercial litigation matters, defense of medical malpractice actions, and advising medical doctors and practices in a variety of legal matters. He is an accomplished trial lawyer in New Hampshire and Massachusetts state and Federal courts, and brings extensive experience to the investigation, evaluation, settlement or trial of major cases. Michael is a skilled litigator, effective ne...

Bill concentrates his practice on tax-exempt financing transactions, land use and zoning, and commercial real estate transactions. He has served as counsel to borrowers, purchasers, and issuers in connection with the issuance of over a billion dollars in tax-exempt bond financings. In addition to serving as general counsel to the New Hampshire Health and Education Facilities Authority, Bill has represented a wide range of borrowers, including schools, colleges, universities, hospitals, and nu...