John Kenneth Felter

Retired Partner

  • JD, cum laude, Harvard Law School, 1975; Winner, Ames Moot Court Competition
  • MA (Economics), Boston College Graduate School of Arts and Sciences, 1972
  • BA, magna cum laude, Boston College, 1972; Scholar of the College, Phi Beta Kappa


  • Massachusetts
  • District of Columbia
  • New York

Court Admissions

  • Supreme Court of the United States
  • U.S. Court of Appeals for the First Circuit
  • U.S. Court of Appeals for the Second Circuit
  • U.S. Court of Appeals for the Seventh Circuit
  • U.S. Court of Appeals for the Eighth Circuit
  • U.S. Court of Appeals for the Ninth Circuit
  • U.S. Court of Appeals for the Federal Circuit
  • U.S. District Court for the District of Massachusetts
  • U.S. District Court for the Southern District of New York
  • U.S. District Court for the Northern District of New York
  • U.S. District Court for the Eastern District of Texas
  • U.S. Tax Court
  • American Bar Association (Litigation Section)
  • Federal Circuit Bar Association, Expert Witness Examinations Program, Faculty
  • American Intellectual Property Law Association
  • New York Bar Association
  • New York Intellectual Property Law Association (Patent Litigation Committee)
  • Boston Bar Association (Advisory Board of the Law Firm Resources Project)
  • Boston Intellectual Property American Inn of Court, Master of the Bench
  • Boston Patent Law Association
  • Intellectual Property Owners Association (Litigation Committee)
  • American Bar Association Litigation Section, Faculty, Trial Evidence Committee, Co-Chair (2014-2015) and Newsletter Author and Editor
  • Massachusetts Continuing Legal Education, Inc., Faculty and Author
  • ALI-ABA Committee on Continuing Education, Faculty
  • Fordham University School of Law Annual Conference International Intellectual Property Law & Policy, Panelist
  • National Mock Trial Competition, New England Championship, Evaluator
  • American Bar Association National Appellate Advocacy Competition, Regional Final Judge
  • American College of Trial Lawyers and New York City Bar Association National Moot Court Competition, Region 1, Judge
  • Harvard Law School Trial Advocacy Program, Trial Advocacy Workshop, Faculty and Trial Advisor, First Year and Qualifying Round Ames Moot Court Competition, Judge, Problem Solving Workshop
  • Boston College Law School Negotiation Competition, Judge, Client Counseling Competition, Judge, Moot Court Competition, Judge
  • Greater Boston Legal Services, Inc., President and Chairman (2017-2018), Vice President (2013-2016), Board of Directors, Executive, Board Giving and Executive Director Search Committees
  • Massachusetts Access to Justice Commission, Revenue Enhancement Committee
  • Massachusetts Bar Foundation, Fellow and IOLTA Grant Review Committee
  • Harvard Law School, Reunion Gift Committee (Member (2005) and Vice Chair (2010)); Class Agent (2011-2014)
  • USS Constitution Museum, Overseer
  • American College of Trial Lawyers
  • Fellow, American College of Trial Lawyers
  • Fellow (2016) and Senior Fellow (2017), Harvard University Advanced Leadership Initiative
  • Fellow (2016-2017), Massachusetts Access to Justice Commission
  • President's Award, Greater Boston Legal Services (2018)
  • The Best Lawyers in America (Bet-the-Company Litigation, Commercial Litigation, Litigation-Patent)
  • Chambers USA: America's Leading Lawyers for Business (Litigation)
  • US News Best Lawyers (Bet-the-Company-Litigation, Commercial Litigation, Patent and Intellectual Property Litigation)
  • Super Lawyers, Corporate Counsel Edition (Intellectual Property Litigation)
  • Benchmark Litigation: The Definitive Guide to America’s Leading Litigation Firms & Attorneys (Local Litigation Star) (General Commercial, Intellectual Property)
  • Super Lawyers, New England Edition (Intellectual Property Litigation)
  • New England's Best Lawyers (Bet-the-Company Litigation, Commercial Litigation, Intellectual Property Law-Patent Litigation)
  • Massachusetts Super Lawyers
  • Boston's Best Lawyers
  • ABA Section on Litigation Outstanding Subcommittee (Trial Evidence) Chair (2013-2014)
  • Ropes & Gray Award for Outstanding Partner Pro Bono Service (2013)
  • The Lawyers’ Committee for Civil Rights and Economic Justice Civil Rights Pro Bono Recognition Award (2013)
  • New York Empire State Counsel (legal services to the poor) (2012)
  • Beta Gamma Sigma, International Business Honor Society (honorary) (2017)

John Kenneth Felter

Retired Partner

John Kenneth Felter has been a trial attorney for over forty years and has tried numerous cases to conclusion in federal and state courts throughout the United States. He is a Fellow of the American College of Trial Lawyers. Ken has also frequently presented oral arguments before federal and state appellate courts. He is now a retired partner in Ropes & Gray's intellectual property litigation practice group and the firm's litigation department and focuses his practice in the areas of intellectual property and complex commercial litigation.

Ken leads tutorials in the Economics Department at Harvard College on Applying Economic Theory in the Practice of Law and has been a member of the Teaching Faculty of the Harvard Law School Trial Advocacy Workshop. He also teaches inter-disciplinary seminars at Boston College: Thinking About Law and Economics (and Psychology).

Ken was selected as a Fellow (2016) and Senior Fellow (2017) at the Advanced Leadership Initiative (ALI) at Harvard University. He was also named as a 2016-2017 Fellow by the Massachusetts Access to Justice Commission and now serves on its Revenue Enhancement Committee.

Ken was elected and served 2017-2018 as President and Chairman of the Board of Directors of Greater Boston Legal Services.


  • Idenix v. Gilead: Patent infringement litigation concerning treatment of hepatitis C.
  • athenahealth, Inc. v. ADP AdvancedMD, Inc.: Patent infringement litigation concerning computerized methods for managing a medical practice.

  • Verisign, Inc.: Analyses of United States and European patent portfolios.

  • Micro Motion v. Krohne: Patent infringement litigation concerning intrinsically safe meter electronics for Coriolis mass flowmeters.
  • NAACP v. Galvin: National Voter Registration Act of 1993 litigation regarding voter registration and services at Massachusetts public assistance offices.
  • Lincoln National v. Transamerica: Patent infringement litigation concerning computerized methods for administering variable annuity plans. See 609 F.3d 1364 (Fed. Cir. 2010).
  • Freedom Wireless v. Cingular Wireless: Patent infringement litigation concerning prepaid wireless communications. See amicus curiae brief in BMC Resources v. Paymentech, 498 F.3d 1373 (Fed. Cir. 2007) (legal standard for joint infringement by multiple parties).
  • In re Textile Rental Litigation: Coordinated national class action litigation concerning alleged unfair and deceptive trade practices in garment rental industry.
  • Wheelabrator Claremont v. City of Claremont: Litigation concerning municipality’s attempt to take waste-to-energy facility by eminent domain.
  • Boston Professional Hockey Ass’n v. Commissioner of Revenue: Litigation concerning challenge to interpretation of state tax regulations governing apportionment of income earned in multi-jurisdictional transactions. See 443 Mass. 276 (2005).
  • Aquarium Systems v. Omega Sea Manufacturing: Litigation concerning misappropriation of trade secrets for manufacture of synthetic sea salts.
  • Boston Police Patrolmen’s Ass’n v. City of Boston: Litigation concerning defense to First Amendment challenge to Boston Garden policy governing access during Democratic National Convention.
  • Frankston v. Denniston: Litigation concerning defense in legal malpractice action involving standard governing predecessor counsel. See 74 Mass. App. Ct. 366 (2009).


  • Co-author, The Admissibility of Sampling Evidence to Prove Individual Damages in Class Actions, 59 B.C.L. Rev. 655 (2018)
  • Business and Commercial Litigation in Federal Courts (Federal Claims Based on Land Use Regulation), American Bar Association Section of Litigation (Fourth Edition 2016; Third Edition 2012 and 2013-2014, 2014-2015 and 2018-2019 Supplements)
  • Massachusetts Courtroom Advocacy (Preparation for Civil Trial in Massachusetts), MCLE, Inc. (First Edition 2005; Second Edition 2009 and 2011 and 2014 Supplements; Third Edition 2017)
  • Co-author, Practice Guide to Section 285 “Exceptional Case” Findings, American Bar Association Intellectual Property Litigation Committee Newsletter (Winter 2016, Vol. 27, No. 2) (January 11, 2016)
  • Co-author, Updated 50 State Survey of Daubert/Frye Applicability: 2014-2015, American Bar Association Section of Litigation Trial Evidence Committee
  • Co-author, The Nuances of Calculating a Reasonable Royalty, American Bar Association Section of Litigation Trial Evidence Committee Newsletter (June 19, 2013)
  • Co-author, Settlement Evidence and Patent Damages, American Bar Association Section of Litigation Trial Evidence Committee Newsletter (January 15, 2013)
  • Co-author, Fundamentals of Civil Deposition Practice (Subsequent Use of Depositions), MCLE, Inc. (1986)
  • Quoted, “Document Retention Policy Is No Excuse for Discovery Noncompliance,” ABA Litigation News (Vol. 41, No. 1, Fall 2015)
  • Quoted, “Severe Attorney Sanction Imposed for Asking Wrong Question,” ABA Litigation News (Vol. 40, No. 4, Summer 2015)
  • Quoted, “Mandamus Ruling Vacates New Trial Order,” ABA Litigation News (March 31, 2015)
  • Quoted, “Lawyers-Not Judges May Select Their Own Juries,” ABA Litigation News (March 26, 2015)
  • Quoted, “Warning For Lawyers Who Give Business & Legal Advice,” ABA Litigation News (Vol. 39, No. 4, Summer 2014)
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