Daniel C. "Dan" Healy

Michelle O'Brien handles environmental and land use permitting and related litigation for various types of developments including residential homes, commercial buildings, waterfront properties, wind turbines, and solid waste facilities. She defends companies in environmental enforcement matters at the federal, state, and local levels. She represents private parties in cost recovery and property damage claims involving releases of oil and hazardous materials, and assists clients with real esta...

Sarah is a member of Sullivan’s REITs Practice Group. She advises public and private REITs, both domestic and foreign, in various industries, including: data centers, office buildings, commercial retail space, distributed antenna systems, timberlands and agricultural properties. She focuses on structuring and compliance work, including cross-border transactions. Sarah also has experience involving federal and state tax litigation and transactional planning involving corporate, franchise...

Alexandra D. Thaler is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Labor and Employment. Alexandra D., who practices law in Boston, Massachusetts, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Alexandra D. is held by other top lawyers in the same geographic and legal practice area.

Phil is a tax attorney focusing on state and local tax consulting and litigation. He has over 30 years of experience litigating and resolving major tax controversies before state supreme and appeals courts and administrative boards. While he has a solid track record of litigating cases, he has also successfully and discretely resolved hundreds of cases short of trial. His experience spans just about every area of state and local tax, including corporate income, sales and use, personal income ...

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Voted Massachusetts Ten Leading Litigators — The National Law Journal CURRENT ROLE Partner & Executive Committee Member, Hagens Berman Sobol Shapiro LLP Leads HBSS’s Boston office Lead negotiator in court-approved settlements totaling more than $2 billion Court-appointed lead or co-lead in ten active antitrust cases alleging injury to businesses and/or consumers caused by the delayed availability of generic drug, including: In re Glumetza Antitrust Litigation , No. 19-cv-05822...

Katelyn R. O'Brien is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Katelyn 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 Katelyn R. 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.

Douglas A. Morgan is a top attorney recognized by Best Lawyers in the practice area(s) of Medical Malpractice Law - Defendants. Douglas A., who practices law in Waltham, Massachusetts, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Douglas A. is held by other top lawyers in the same geographic and legal practice area.

Michael R. Brown is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law and Product Liability Litigation - Defendants. Michael R., who practices law in Boston, Massachusetts, has been recognized since 1989. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michael R. is held by other top lawyers in the same geographic and legal practice area.