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 Tufts University, Law Offices of Jeffrey Coniaris, and Mintz Levin Cohn Ferris Glovsky and.

Top cities in Massachusetts

All practitioners in Massachusetts

Colin B. Colt

Reg. 72097

Patent attorney

Chelmsford, MA · 01824

781-420-1866

Sandra Szela Congdon

Reg. 60655

Patent attorney

Tufts University

Boston, MA · 02111

617-636-3819

Jeffrey C Coniaris

Reg. 45673

Patent attorney

Law Offices of Jeffrey Coniaris

Weston, MA · 02493

617-720-5888

David Giles Conlin

Reg. 27026

Patent attorney

Mintz Levin Cohn Ferris Glovsky and

Boston, MA · 02111

617-348-1856

Kristin A Connarn

Reg. 57025

Patent attorney

McDermott Will & Emery

Boston, MA · 02109

617-535-4000

David J. Connaughton· Jr.

Reg. 67275

Patent attorney

Lambert & Associates

Boston, MA · 02109

617-742-8714

Aaron E Connor

Reg. 59604

Patent attorney

Aaron Connor

Somerville, MA · 02144

617-990-2806

Camden R. Connor

Reg. 83525

Patent agent

Mintz Levin

Boston, MA · 02210

617-239-8425

Matthew E Connors

Reg. 33298

Patent attorney

Gesmer Updegrove LLP

Boston, MA · 02109

617-531-8315

Zachary D Conrad

Reg. 77682

Patent agent

DLA Piper

Boston, MA · 02109

847-721-0443

Derek E. Constantine

Reg. 67947

Patent agent

Burlington, MA · 01803

617-423-9999

Ioannis C Constantinides

Reg. 73549

Patent attorney

E Ink Corporation

Billerica, MA · 01821

617-499-6143

Francis Luca Conte

Reg. 29630

Patent attorney

Swampscott, MA · 01907

781-592-9077

Grier A Conville

Reg. 82101

Patent agent

Fish & Richardson P.C.

Boston, MA · 02210

617-368-2123

John L Conway

Reg. 48241

Patent attorney

Sunstein Kann Murphy & Timbers LLP

Boston, MA · 02110-1618

617-443-9292

Robert T Conway· Jr

Reg. 33859

Patent attorney

HoustonHogle LLP

Lexington, MA · 02420

781-863-9991

Timothy A. Cook

Reg. 74073

Patent attorney

Wilmer Cutler Pickering Hale and Dorr LLP

Boston, MA · 02109

617-526-6005

Elizabeth K. Cooke

Reg. 82515

Patent agent

Morrison Foerster

Boston, MA · 02116

161-764-84804

Margaret A. Cooney

Reg. 82579

Patent agent

Brighton, MA · 02135

248-807-1091

Ellen E. Corcoran

Reg. 83239

Patent agent

Choate, Hall, & Stewart LLP

Boston, MA · 02110

617-248-4717

Eleesya A. Cordes

Reg. 84696

Patent attorney

Sullivan & Worcester LLP

Boston, MA · 02109

617-338-2462

Alison E Corkery

Reg. 52770

Patent attorney

Waban, MA · 02468

617-467-4690

Peter F Corless

Reg. 33860

Patent attorney

Mintz Levin Cohn Ferris Glovsky and Popeo, PC

Boston, MA · 02111

617-348-1859

Susan R Cornacchio

Reg. 44090

Patent attorney

Ipswich, MA · 01938

978-356-0371

Erica V. Cornell

Reg. 78345

Patent agent

Clark & Elbing

Boston, MA · 02110

617-897-2038

Jennifer N Costigliola

Reg. 80787

Patent agent

Quincy, MA · 02169

919-491-1109

John J Cotter

Reg. 38116

Patent attorney

K&L Gates LLP

Boston, MA · 02111

617-261-3178

Benjamin P. Coughlin

Reg. 83436

Patent agent

Boston, MA · 02109

617-395-7026

Sean M Coughlin

Reg. 48593

Patent attorney

Cooley LLP

Cambridge, MA · 02116-3736

617-937-2333

Jason J Cournoyer

Reg. 76184

Patent agent

Sciex

Framingham, MA · 01701

617-515-4373

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.