John B. Koss

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  • Boston University School of Law (JD)
  • Northwestern University (MS, Journalism)
  • Northwestern University (BA)

Bar Admissions

  • Massachusetts
  • New York
  • First Circuit Court of Appeals
  • United States District Court for the District of Massachusetts


  • Spanish

John’s practice focuses exclusively on counseling clients on e-discovery and large data matters. Specifically, John works with each client to:

  • develop a consistent approach to negotiating vendor agreements,
  • prepare defensible discovery plans,
  • implement best-in-class review technology, and
  • utilize innovative workforce arrangements to maximize efficiency and litigation cost savings.  

Prior to rejoining the firm in the fall of 2016, John led the Boston office of Counsel on Call, one of the nation’s leading legal services firms, where he worked with in-house legal departments and law firms to create effective and economical legal solutions — incorporating flexible staffing, repeatable workflows, and technology — in a wide variety of practice areas including litigation, compliance, employment, diligence, and contracts management.

During his initial tenure at Mintz Levin, from 2005 to 2015, John was a founding member of the firm’s Electronic Discovery Practice Group. He was also an active member of the firm’s Product Liability and Complex Tort Litigation Practice Group. John maintained a diverse litigation and counseling practice with a particular focus on serving as national trial, strategy, and discovery counsel for pharmaceutical clients involved in serial litigation. In this role, he advised on information governance and the design and execution of companywide and multinational discovery plans.

John also teaches legal writing at Suffolk University, and taught for six years as a member of the faculty at Boston University School of Law’s First-Year Research and Writing Program.

Recognitions & Awards

  • Massachusetts Super Lawyers: Rising Star
  • Massachusetts Lawyers Weekly and Massachusetts Bar Association: Up and Coming Lawyer
  • National LGBT Bar Association. Best LGBT Lawyers Under 40

Professional & Community Involvement

  • Clerk and past chair of the board, Fenway Health 
  • Board chair, AIDS Action Committee 
  • Past board member, Boston Area Rape Crisis Center
  • Past member, Massachusetts Bar Association Task Force on Law School Effectiveness

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