Massachusetts

Patent attorneys in Massachusetts

Massachusetts hosts 2,875 active patent practitioners registered with the USPTO Office of Enrollment and Discipline. Patent attorneys and patent agents can both prepare and file patent applications, but only patent attorneys can also offer legal advice on prosecution strategy, freedom-to-operate analyses, and infringement opinions in Massachusetts. Practitioners are concentrated across 20 cities, with the largest clusters in the metros listed below. Notable firms with multiple registered practitioners in the state include Attorney at Law, Clark+Elbing LLP, and Finnegan, Henderson, Farabow, Garrett & Dunner, LLP.

Top cities in Massachusetts

All practitioners in Massachusetts

Stephen Paul Kearney

Reg. 35566

Patent attorney

Attorney at Law

Duxbury, MA · 02331-1221

781-249-5166

Michelle R Kearns

Reg. 64773

Patent attorney

Methuen, MA · 01844

978-604-5092

Melissa A Keeffe

Reg. 48477

Patent attorney

Orleans, MA · 02653

774-316-4344

Ross A. Keenholtz

Reg. 81441

Patent agent

Clark+Elbing LLP

Boston, MA · 02111

617-428-0200

Nishla H Keiser

Reg. 63906

Patent attorney

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Boston, MA · 02110

617-646-1630

Crystal L Kellas

Reg. 71586

Patent agent

Mintz Levin Cohn Ferris Glovsky and Popeo, PC

Boston, MA · 02111

617-348-4973

John Joseph Kelleher

Reg. 26092

Patent attorney

Belmont, MA · 02478

617-489-0859

Eric J Keller

Reg. 64855

Patent attorney

Quincy, MA · 02169

650-996-2277

Edward L Kelley

Reg. 41112

Patent agent

Invention Management Associates Inc.

Lexington, MA · 02420

781-538-6315

Lara Chapman Kelley

Reg. 41551

Patent attorney

McNeill PLLC

Cambridge, MA · 02140

703-243-2007

Edward J Kelly

Reg. 38936

Patent attorney

Boston & Galway LLC

Nahant, MA · 01908

161-796-69434

Timothy L Kelly

Reg. 75747

Patent agent

Fusion Optix, Inc.

Woburn, MA · 01801

781-995-0805 EXT. 104

Ilana A Kelsey

Reg. 82107

Patent agent

Finnegan, Henderson, Farabow, Garrett & Dunner LLP

Boston, MA · 02210

617-530-0261

John T Kendall

Reg. 50680

Patent agent

Fish & Richardson P.C.

Boston, MA · 02210

617-521-7032

Wayne Mariner Kennard

Reg. 30271

Patent attorney

Law Offices of Wayne M. Kennard, PC

Natick, MA · 01760

508-655-0761

Brendan J Kennedy

Reg. 41890

Patent attorney

MilliporeSigma

Wilbraham, MA · 01095

978-274-7099

Thomas J. Kennedy· III

Reg. 81007

Patent attorney

Kennedy Law Practice, P.C.

Harwich Port, MA · 02646

774-994-3545

Maryann C. Kenney

Reg. 59742

Patent agent

Saint Gobain R&D Center

Northborough, MA · 01532

508-351-7976

Joseph J Kenny

Reg. 43710

Patent attorney

ImmunoGen, Inc.

Waltham, MA · 02451

781-895-0699

Ryan Kenny

Reg. 72993

Patent attorney

Repligen Corp.

Woburn, MA · 02453

603-320-0951

Robert W Kenyon

Reg. 53110

Patent attorney

NSTAR Electric and Gas CORP

Westwood, MA · 02090

781-441-8606

Michele A Kercher-DiVerdi

Reg. 51869

Patent attorney

Vertex Pharmaceuticals Incorporated

Boston, MA · 02210

617-341-6891

Kristen A. Keriakos

Reg. 74739

Patent attorney

SharkNinja

Needham, MA · 02494

617-243-0235

Ann-Louise Kerner

Reg. 33523

Patent attorney

DLA Piper LLC

Boston, MA · 02110

617-406-6087

Stephen W Kerr

Reg. 83039

Patent agent

Boston, MA · 02210

617-570-1400

Adam Keser

Reg. 54217

Patent attorney

Saint-Gobain

Worcester, MA · 01615

508-795-5677

Aaron Seth Kesselheim

Reg. 51871

Patent attorney

Brigham and Women's Hospital

Boston, MA · 02115

617-536-1580

Micah-Shalom Kesselman

Reg. 79374

Patent attorney

Philips

Cambridge, MA · 02141

617-583-3918

Alison B Kessler

Reg. 47703

Patent attorney

Solid Biosciences

Charlestown, MA · 02129

917-531-5085

William John Keyes

Reg. 54218

Patent attorney

Sunstein Kann Murphy & Timbers LLP

Boston, MA · 02110

617-443-9292

Common questions

Do I need a patent attorney based in Massachusetts?

No. Every USPTO-registered patent practitioner is licensed to file applications on behalf of inventors in any state, regardless of where the practitioner's office is. Choosing a Massachusetts-based practitioner can simplify in-person inventor signings, local meetings, and same-time-zone calls, but it is not a legal requirement.

How many patent attorneys are licensed in Massachusetts?

2,875 active USPTO-registered patent practitioners list a Massachusetts office address on the OEDCI roster. This includes both patent attorneys (who can also offer legal advice) and patent agents (who can prepare and file patents but not offer broader legal advice).

What is the difference between a patent attorney and a patent agent?

Both pass the USPTO Patent Bar and can prepare, file, and prosecute patent applications. Only patent attorneys also hold a state bar license, meaning they can additionally offer legal advice on infringement, licensing, and litigation strategy. Patent agents tend to charge less per hour and are common at large in-house IP departments.