Karen J. O' Connor

Mary-Kathleen O'Connell is a top attorney recognized by Best Lawyers in the practice area(s) of Trusts and Estates. Mary-Kathleen, who practices law in Boston, Massachusetts, has been recognized since 2005. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mary-Kathleen is held by other top lawyers in the same geographic and legal practice area.

Michael J. Attisha Ph.D. is a top attorney recognized by Best Lawyers in the practice area(s) of Patent Law. Michael J., who practices law in Boston, Massachusetts, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michael J. is held by other top lawyers in the same geographic and legal practice area.

David C. Kurtz is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management and Litigation - Labor and Employment. David C., who practices law in Boston, Massachusetts, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David C. is held by other top lawyers in the same geographic and legal practice area.

Ben McGuire is a top attorney recognized by Best Lawyers in the practice area(s) of Public Finance Law. Ben, who practices law in Boston, Massachusetts, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ben is held by other top lawyers in the same geographic and legal practice area.

Suzanne Hamel is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law. Suzanne, who practices law in Boston, Massachusetts, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Suzanne is held by other top lawyers in the same geographic and legal practice area.

Marilynne R. Ryan (Mal) is a partner at Ryan Faenza Carey and has been a practicing attorney since 1986 concentrating exclusively in divorce and family law. Attorney Ryan is a seasoned practitioner and represents clients in all aspects of divorce and family law. She is certified in conciliation, mediation and collaborative law. Her vast experience and knowledge in the field of divorce and family law, coupled with her non-nonsense approach, qualify her as a worthy advocate for clients who desi...

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

Robert Asher leads the post-grant proceedings team at Sunstein leveraging his deep experience in patent litigation and patent prosecution. He is an astute and accomplished advocate for inventors and businesses affected by patents. Clients have been richly rewarded from Bob’s litigation guidance, appellate advocacy and patent prosecution work. He is the chair of Sunstein’s PTAB Litigation practice group. Our team won a $14.6M verdict for patent infringement of infrared thermometer ...

Punam Singh Rogers is a top attorney recognized by Best Lawyers in the practice area(s) of Immigration Law. Punam Singh, who practices law in Boston, Massachusetts, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Punam Singh is held by other top lawyers in the same geographic and legal practice area.

Dana McSherry advises healthcare and life sciences companies in criminal and civil government enforcement matters and in related civil litigation, including civil False Claims Act litigation. She advises clients concerning all aspects of civil and criminal investigations relating to Medicare and Medicaid billing and other government contracting issues, including negotiating with the government and managing clients’ responses to civil investigative demands and large-scale investigative s...