Paul J. O'Riordan

Steven M. Ellis is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law and Corporate Law. Steven M., who practices law in Boston, Massachusetts, has been recognized since 2013. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Steven M. is held by other top lawyers in the same geographic and legal practice area.

Matthew J. Connolly is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Matthew J., 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 Matthew J. is held by other top lawyers in the same geographic and legal practice area.

Eben P. Colby is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation and Litigation - Securities. Eben P., 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 Eben P. is held by other top lawyers in the same geographic and legal practice area.

Cheryl A. Clarkin is a top attorney recognized by Best Lawyers in the practice area(s) of Trademark Law. Cheryl A., who practices law in Boston, Massachusetts, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Cheryl A. is held by other top lawyers in the same geographic and legal practice area.

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

Thomas has over 20 years of experience representing industry leaders in life sciences. He is internationally recognized for his experience in creating, implementing and monetizing effective patent strategies. He represents public and private companies, investors and academic institutions in the life sciences arena. His portfolio of life sciences companies spans diagnostics, medical devices, life science tools and technology platforms, genomics and therapeutics. Before joining Sullivan, Tom wa...

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

Terri L.B. Partridge, who heads the firm's family law group, has held the highest Martindale-Hubbell rating, AV, since 1996. She has been, again, listed as one of the top Family Law Attorneys in Massachusetts Super Lawyers 2010, as seen in Boston Magazine November 2010 and at superlawyers.com. Throughout her 21-year career, she has handled numerous divorce cases involving complicated issues such as the validity of postnuptial and antenuptial agreements and trusts; and the valuation of closely...

Karla Chaffee focuses her practice on land use permitting and real estate due diligence. She helps her clients maximize efficiency by charting a coordinated permitting strategy through a deal’s lifecycle. My focus Land Use Permitting I provide guidance to clients seeking zoning approvals and other development entitlements. I lay the groundwork for successful projects by working with clients, planning staff, and elected and appointed officials to navigate local, state, and federal permit...

Doug Burton, the Chair of WilmerHale’s Real Estate Practice Group, has nearly three decades of experience in the most complex private equity investment and joint ventures, development, acquisitions, dispositions, leasing and financing transactions. His clients include real estate investment trusts, top pension fund advisors, Fortune 50 corporations, developers and nonprofit institutions, with a broad range of asset classes, including lab and life sciences, hospitality, multi-family, sen...