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Boston Business Litigation Lawyer
Overview
Before founding Block & Roos, LLP with Jessica Block, Sig Roos was a partner in one of the country's largest law firms. Having worked in that setting as well as in a fast-paced, mid-sized firm specializing in commercial litigation, Sig appreciates the demands of complex litigation. He now applies the skills honed during his 30 year career toward handling a wide range of matters including:
- Business litigation
- Complex commercial litigation
- Real estate syndication litigation
- Commercial collections
- Enforcement of out-of-state and foreign judgments
- Partnership, trust, and close corporation disputes
- Securities litigation
- Shareholder disputes
- Professional licensure and misconduct
Sig's skills as a negotiator, his facility with the law and the rules of procedure, and his no-nonsense approach in court have achieved results that have gained him the respect of clients, judges, and attorneys throughout Massachusetts.
Sig's roster of clients includes several national law firms, a Fortune 500 corporation, and one of the country's leading real estate investment firms. His work for these companies ranges from partnership and shareholder actions to non-competition and general contract disputes, to consumer disputes and collection matters. He also has had extensive experience representing attorneys, physicians, nurses, veterinarians, research faculty, and other professionals in licensing and research integrity matters.
In 2008 Sig Roos was named one of the Top 100 Boston Lawyers by Boston Magazine and has been named a Super Lawyer each year since 2005 by Boston Magazine. The “Super Lawyer” honor is bestowed upon the top 5% of lawyers in the state who have achieved a high degree of peer recognition and professional achievement.
Until recently, Sig served as the Chair of the Hampshire College Board of Trustees and is currently, a member of the Board of the Concord Art Association in Concord, MA and president of a family foundation. For 8 years, Sig spent a week each year volunteering his time as a teaching team member at the Harvard Law School Trial Advocacy Workshop.
About Sigmund J. Roos
Current Employment Position(s)
- Partner
Practice Areas
- Business Litigation
- Medical Disciplinary Proceedings
- Noncompetition
- Creditors Rights
- Administrative
- Alternative Dispute Resolution
- Professional Licensure and Misconduct
Qualifications
Bar Admissions
- Massachusetts, 1983
- U.S. District Court District of Massachusetts, 1984
- U.S. Court of Appeals 1st Circuit, 1986
- U.S. District Court Northern District of Texas, 1986
- U.S. Bankruptcy Court Southern District of Texas, 1984
Education
- Northeastern University School of Law, Boston, Massachusetts, 1983
J.D. - Hampshire College, Amherst, MA 01002, 1977
B.A.
Major: Legal Studies and American Civilization - Brown University, Providence, Rhode Island, 1980
M.A.
Major: American Civilization
Office Information
Address
10 Liberty SquareSuite 300 Boston, MA 02109
Phone
Fax
- 617-227-1948
Websites
Achievements
Other Sources of Feedback About Sigmund J. Roos
Included on the 2025 Massachusetts Super Lawyers list
Past Lists
- 2024 Massachusetts Super Lawyers list
- 2023 Massachusetts Super Lawyers list
- 2022 Massachusetts Super Lawyers list
- 2021 Massachusetts Super Lawyers list
- 2020 Massachusetts Super Lawyers list
- 2019 Massachusetts Super Lawyers list
- 2018 Massachusetts Super Lawyers list
- 2017 Massachusetts Super Lawyers list
- 2016 Massachusetts Super Lawyers list
- 2015 Massachusetts Super Lawyers list
- 2014 Massachusetts Super Lawyers list
- 2013 Massachusetts Super Lawyers list
- 2012 Massachusetts Super Lawyers list
- 2011 Massachusetts Super Lawyers list
- 2010 Massachusetts Super Lawyers list
- 2009 Massachusetts Super Lawyers list
- 2008 Massachusetts Super Lawyers list
- 2007 Massachusetts Super Lawyers list
- 2006 Massachusetts Super Lawyers list
- 2005 Massachusetts Super Lawyers list
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