Best Lawyers in Massachusetts, United States for Intellectual Property Law
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Cities
John V. Hobgood is a top attorney recognized by Best Lawyers in the practice area(s) of Copyright Law. John V., 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 V. is held by other top lawyers in the same geographic and legal practice area.
Steven G. Saunders is a top attorney recognized by Best Lawyers in the practice area(s) of Patent Law. Steven G., who practices law in Boston, Massachusetts, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Steven G. is held by other top lawyers in the same geographic and legal practice area.
Jeffrey T. Klayman is a top attorney recognized by Best Lawyers in the practice area(s) of Patent Law. Jeffrey T., 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 Jeffrey T. is held by other top lawyers in the same geographic and legal practice area.
Mark S. Leonardo is a top attorney recognized by Best Lawyers in the practice area(s) of Trademark Law. Mark S., 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 Mark S. 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...
Ronald Cahill is well-respected for his work with clients of virtually all sizes to solve their most challenging intellectual property problems. His advice ranges from designing protection that maximizes the value of the client’s investment in research and development to applying that IP in court and in the marketplace, which allows clients to realize that value. With decades of courtroom experience, Ron has led trial teams in patent infringement cases around the country. He also conduc...
Ilan Barzilay is an intellectual property practitioner specializing in obtaining and enforcing patent rights. Ilan leads a team of attorneys that procures patents for clients ranging from technology startups and research institutions to established companies and multinational corporations. He is a trusted advisor to clients seeking meaningful patent protection crafted to align with important business goals. His practice also includes handling contentious matters in the federal courts and befo...
Duncan A. Greenhalgh is a top attorney recognized by Best Lawyers in the practice area(s) of Biotechnology and Life Sciences Practice and Patent Law. Duncan A., who practices law in Boston, Massachusetts, has been recognized since 2017. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Duncan A. is held by other top lawyers in the same geographic and legal practice area.
Ms. Whelan's practice includes Patent Office practice, litigation, and counseling in the field of life sciences, including chemistry, biotechnology and pharmaceuticals. Her experience includes patent strategy across the spectrum from pre-litigation investigation and litigation, to Patent Office post-grant proceedings including inter partes review and reexamination, to analysis of the competitive landscape and IP due diligence, as well as obtaining patent protection and portfolio management.
Mark Matuschak is an experienced trial lawyer focusing on trademark, trade dress, patent and trade secret litigation. He is often brought in shortly before trial as lead counsel to craft winning strategies in difficult-to-win cases and jurisdictions and on appeals. Mr. Matuschak has tried dozens of cases, obtained the first-ever jury verdict of patent invalidity in the Eastern District of Texas, won a number of notable trademark and trade dress cases in the financial services, consumer produc...
Theresa C. Kavanaugh is a top attorney recognized by Best Lawyers in the practice area(s) of Biotechnology and Life Sciences Practice and Patent Law. Theresa C., 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 Theresa C. is held by other top lawyers in the same geographic and legal practice area.
Our Methodology
Recognition by Best Lawyers is based entirely on peer review. Our methodology is designed to capture, as accurately as possible, the consensus opinion of leading lawyers about the professional abilities of their colleagues within the same geographical area and legal practice area.
The Process
Best Lawyers employs a sophisticated, conscientious, rational, and transparent survey process designed to elicit meaningful and substantive evaluations of the quality of legal services. Our belief has always been that the quality of a peer review survey is directly related to the quality of the voters.