D. Sean "Sean" McMahon

Laura's practice involves federal and state civil (commercial) litigation and arbitrations throughout the United States, with an emphasis on complex regulatory and fiduciary issues. She has extensive experience in disputes involving shareholder and investor rights and relationships; application of the business judgment rule; and fiduciary disclosures, compliance and enforcement issues (often in a securities law setting). A significant component of her practice consists of counseling clients o...

Heather B. Repicky advises on patent, trademark, copyright, and trade secret issues facing companies large and small. Heather’s deep knowledge and litigation strength, combined with her strategic and direct approach, allows her to work with clients to resolve their most challenging intellectual property disputes. Heather focuses her practice on IP and complex commercial litigation. She is a first-chair litigator and has represented clients in all stages of the litigation life cycle, inc...

Greg is the leader of the firm’s Permitting & Land Use and Energy, Infrastructure & Sustainability practice groups. He is a real estate, land use, and environmental attorney with more than 20 years of experience in commercial real estate transactions, including significant experience in the planning, design, permitting and development of contaminated properties and similarly challenging sites, as well as renewable energy and infrastructure projects. His practice covers all aspec...

William L. Roberts is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. William L., 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 William L. is held by other top lawyers in the same geographic and legal practice area.

Mr. Guekguezian is a highly experienced trial attorney who has obtained winning jury verdicts in dozens of trials involving claims of death or catastrophic injury throughout the trial courts of Massachusetts. He concentrates in medical malpractice, product liability, toxic torts, and personal injury. Mr. Guekguezian is regional counsel (New England) for a national company in the asbestos litigation, he is counsel in Massachusetts and Rhode Island to a number of other national companies in the...

Brandon L. Bigelow is a top attorney recognized by Best Lawyers in the practice area(s) of Franchise Law and Litigation - Antitrust. Brandon L., who practices law in Boston, Massachusetts, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Brandon L. is held by other top lawyers in the same geographic and legal practice area.

Sean P. O'Connor is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management and Litigation - Labor and Employment. Sean 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 Sean P. is held by other top lawyers in the same geographic and legal practice area.

Jeffrey W. Greene is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. Jeffrey 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 Jeffrey W. is held by other top lawyers in the same geographic and legal practice area.

Walter R. McCabe III is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Walter R., who practices law in Boston, Massachusetts, has been recognized since 2007. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Walter R. is held by other top lawyers in the same geographic and legal practice area.

Alexander H. Pyle is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law. Alexander H., 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 Alexander H. is held by other top lawyers in the same geographic and legal practice area.