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 Goodwin Procter LLP, R.M. de Luna I.P. Law Office, and Foley & Lardner LLP.

Top cities in Massachusetts

All practitioners in Massachusetts

Renato M de Luna

Reg. 36780

Patent attorney

R.M. de Luna I.P. Law Office

Bolton, MA · 01740

978-634-1164

James C De Vellis

Reg. 52814

Patent attorney

Foley & Lardner LLP

Boston, MA · 02199-7610

617-342-4000

Raymond James De Vellis

Reg. 26263

Patent attorney

Duxbury, MA · 02332

781-585-3377

Sean M Dean

Reg. 46656

Patent attorney

Fish & Richardson P.C.

Boston, MA · 02110-1878

617-542-5070

William M. Dean

Reg. 80296

Patent agent

Wellesley, MA · 02482

339-237-1883

James D DeCamp

Reg. 43580

Patent attorney

Clark and Elbing, LLP

Boston, MA · 02111

617-428-0200

Anthony Harold Decicco

Reg. L0385

Limited recognition

GTC Law Group LLP & Affiliates

Westwood, MA · 02090

617-314-7892

Ethan M. DeCicco

Reg. 83259

Patent agent

Fenwick & West, LLP

Boston, MA · 02110

617-245-5804

Amy M DeCloux

Reg. 54849

Patent attorney

Edwards Angell Palmer & Dodge, LLP

Boston, MA · 02199

617-239-0100

Giulio Anthony DeConti· Jr

Reg. 31503

Patent attorney

Lathrop & Gage LLP

Boston, MA · 02109

857-300-4002

Juliet J DeFrancisco

Reg. 70163

Patent attorney

Nixon Peabody

Boston, MA · 02109

617-345-1382

Denise W DeFranco

Reg. 36401

Patent attorney

Belmont, MA · 02478

617-484-6008

Michael J DeGrazia

Reg. 68901

Patent agent

McCarter & English LLP

Boston, MA · 02110

617-449-6585

Kevin J DeJong

Reg. 64762

Patent attorney

Goodwin Procter LLP

Boston, MA · 02210

617-570-1156

James R Delacenserie

Reg. 77383

Patent agent

Cambridge, MA · 02138

435-513-2605

Christopher G. Demaras

Reg. 71448

Patent attorney

Pearl Cohen Zedek Latzer Baratz

Boston, MA · 02116

646-878-0852

Jackson C. DeMartino

Reg. 84228

Patent agent

Duxbury, MA · 02332

339-788-2932

Wayne M DeMello

Reg. 48601

Patent attorney

Tandem Diabetes Care

WestFord, MA · 01886

781-929-2002

Lawrence K. DeMeo

Reg. 68207

Patent attorney

Miele Law Group, PC

Boston, MA · 02110

817-818-2692

Luke Demoracski

Reg. 65952

Patent attorney

LOCKHEED MARTIN

Chelmsford, MA · 01824

978-805-2897

Wendy J Demoracski

Reg. 76185

Patent attorney

Philips

Cambridge, MA · 02141

978-895-8382

Ronald R Demsher

Reg. 42478

Patent attorney

Hamilton, Brook, Smith, & Reynolds

Concord, MA · 01742

978-341-0036

Michelle Ming Deng

Reg. 56124

Patent attorney

Biogen Inc.

Cambridge, MA · 02142

617-679-4474

Derek J. Denhart

Reg. 71449

Patent attorney

Goodwin Procter LLP

Boston, MA · 02210

617-570-8643

James E Denker

Reg. 72535

Patent attorney

Behmke Innovation Group, LLC

Boston, MA · 02210

651-621-4117

Douglas Edward Denninger

Reg. 31752

Patent attorney

Douglas E. Denninger, ESQ.

Bourne, MA · 02532

508-725-7721

Joseph W DePalma

Reg. 77574

Patent agent

Agilent Technologies, Inc.

Lexington, MA · 02421

302-633-7425

Emily A Dertz

Reg. 65563

Patent attorney

Ironwood Pharmaceuticals

Cambridge, MA · 02142

617-768-2628

Thomas James Des Rosier

Reg. 30168

Patent attorney

Sanofi

Cambridge, MA · 02142

617-678-7256

Jody Lynn DeStefanis

Reg. 44653

Patent attorney

Schlumberger Technology Corporation

Cambridge, MA · 01239

617-768-2269

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.