John C. Calhoun

John C. Calhoun is a principal at Choate Hall & Stewart LLP in Boston. He represents companies, financial institutions, insurers, technology businesses, and life sciences clients in complex commercial litigation. His practice focuses on contract disputes, patent and trade secret matters, securities cases, and insurance and reinsurance litigation. Calhoun handles matters at trial and throughout the litigation process while also helping clients assess, avoid, and resolve legal risk efficiently.

Calhoun earned his J.D. from Yale Law School in 2015, where he served as an editor of the Yale Law Journal and managing editor of the Yale Journal of International Law. He also received an M.Sc. with honors from Oriel College, University of Oxford, an M.A. with honors from the University of York, and a summa cum laude B.A. from the University of Richmond. Before law school, he was a Marshall Scholar at Oxford and a Fulbright Scholar in Taiwan.

Calhoun has represented clients in significant business, insurance, and intellectual property disputes. His experience includes securing summary judgment and appellate victories for private equity clients, winning a trial involving rescission of a $25 million insurance policy, and handling patent and trade secret litigation for life sciences companies. He has also advised banks, insurers, manufacturers, software founders, and independent schools in whistleblower matters, board disputes, indemnification claims, internal investigations, and misconduct investigations.

John C. Calhoun has been recognized by The Legal 500, Best Lawyers in America as one of its “Ones to Watch,” and the Massachusetts Supreme Judicial Court Pro Bono Honor Roll. He is a member of the Boston Bar Association and American Bar Association and serves on business and charitable boards. Through Choate’s pro bono program, he represents children with special needs seeking appropriate educational services, reflecting a broader commitment to practical advocacy and public service.

Law Office Affiliations

• Principal, Choate, Hall & Stewart LLP
• Member, Boston Bar Association
• Member, American Bar Association

Licensed State

• Massachusetts

Education

• Yale Law School
  Juris Doctor (JD)
• Oriel College, University of Oxford
  Master of Science (MSC)
• University of York
  Master of Arts (MA)
• University of Richmond
  Bachelor of Arts (BA)