Brian E. Tierney

John W. Powell is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Intellectual Property. John W., who practices law in Boston, Massachusetts, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John W. is held by other top lawyers in the same geographic and legal practice area.

Catherine A. Bednar is a top attorney recognized by Best Lawyers in the practice area(s) of Product Liability Litigation - Defendants. Catherine A., who practices law in Boston, Massachusetts, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Catherine A. is held by other top lawyers in the same geographic and legal practice area.

John J. Monaghan is the national practice group leader of the firm's Bankruptcy, Restructuring and Creditors' Rights Practice Group. Mr. Monaghan is particularly focused on representing major case participants in complex commercial Chapter 11 cases. His extensive bankruptcy practice has involved representation of a wide range of clients, including Chapter 11 debtors, creditors’ committees, equity committees, lenders, purchasers of assets, landlords, licensors, trustees, parties to prepe...

Of his 20 years practicing law, Ben Zimmermann has spent 20 at Sugarman & Sugarman P.C. in Boston. After finishing his studies at Fordham University School of Law, he got his start in the corporate litigation group of a large New York City firm. His path quickly changed and took him to SUGARMAN, where he has emerged as a leading trial lawyer in New England, and the managing partner of a firm with a sixty year history of excellence in litigating and trying serious personal injury cases. Ra...

Mark Seltzer represents corporations, executives and professionals in government investigations and enforcement actions and related complex litigation. What do you focus on? In recent years, I have focused my practice on representing pharmaceutical companies and their executives, medical device manufacturers and their executives, clinical diagnostics manufacturers and other health care providers in government health care fraud investigations and related civil litigation under the federal Fals...

Patrick is a seasoned trial attorney, concentrating on employment and employment-related litigation and arbitration, as well as disputes between partners and shareholders in closely held corporations. Patrick leads the firm’s trial practice. Patrick began his career as a trial attorney with the United States Department of Justice and has litigated hundreds of cases (conducting both bench and jury trials) in state and federal courts across the country. Since entering private practice, Pa...

David A. Ephraim is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law. David A., 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 David A. is held by other top lawyers in the same geographic and legal practice area.

Mark Barnes is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law. Mark, who practices law in Boston, Massachusetts, has been recognized since 2001. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mark is held by other top lawyers in the same geographic and legal practice area.

Emily R. Whelan is a top attorney recognized by Best Lawyers in the practice area(s) of Patent Law. Emily R., 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 Emily R. is held by other top lawyers in the same geographic and legal practice area.

Attorney Walter A. Costello, Jr., represents plaintiffs in cases involving serious and catastrophic personal injuries. Over his more than 40-year career, he has handled a wide array of matters leading to multi-million dollar results for his clients, including motor vehicle and trucking accidents, construction site injuries, products liability, premises liability, medical malpractice/nursing home liability, and aquatic injury claims. A past president of the Massachusetts Academy of Trial Attor...