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 Dingman IP Law, PC, Dell EMC, and Foley Hoag, LLP.

Top cities in Massachusetts

All practitioners in Massachusetts

Brian M Dingman

Reg. 32729

Patent attorney

Dingman IP Law, PC

Westborough, MA · 01581

508-898-9495

Anne-Marie Dinius

Reg. 45592

Patent attorney

Dell EMC

Hopkinton, MA · 01748

774-350-0318

Thi Khanh Dio

Reg. 66931

Patent attorney

Foley Hoag, LLP

Boston, MA · 02210

617-832-1729

Arthur F Dionne

Reg. 23093

Patent attorney

McCormick Paulding & Huber LLP

Springfield, MA · 01103

413-736-5401

Heather J. DiPietrantonio

Reg. 65843

Patent attorney

Wolf, Greenfield & Sacks, P.C.

Boston, MA · 02210-2206

617-646-8000

Ryan S. Ditcham

Reg. 81825

Patent agent

Dorchester, MA · 02125

978-799-8320

Andre P Ditsch

Reg. 47528

Patent agent

Cambridge, MA · 02139

617-252-1502

Michael J DiVerdi

Reg. 51620

Patent agent

Vertex Pharmaceuticals Incorporated

Boston, MA · 02210

617-961-6100

Lisa A Dixon

Reg. 40995

Patent agent

Boston, MA · 02116

617-797-5123

Williams S. Dixon

Reg. 78346

Patent agent

Mintz, Levin, Cohn, Ferris, Glovsky & Popeo, P.C.

Boston, MA · 02111

617-542-6000

Dai-Phuc Do

Reg. 82656

Patent attorney

Emerson

Bedford, MA · 01730

781-221-4238

Hansol Doh

Reg. 79194

Patent agent

Danielson Legal LLC

Cambridge, MA · 02138

339-223-9941

George S Dolina

Reg. 63654

Patent attorney

Fresenius Medical Care North America

Waltham, MA · 02451

202-630-0170

Elias Domingo

Reg. 52827

Patent attorney

Evoqua Water Technologies LLC

Tewksbury, MA, MA · 01876

978-614-7048

Ninos J Donabed

Reg. 67121

Patent agent

Milton, MA · 02186

517-429-8393

Robert V Donahoe

Reg. 46667

Patent attorney

Rhodes Donahoe, P.C.

Cambridge, MA · 02142

617-963-8919

Alexander J Donovan

Reg. 80813

Patent agent

Lando & Anastasi, LLP

Boston, MA · 02109

617-395-7028

Douglas C Doskocil

Reg. 39660

Patent attorney

Goodwin Procter LLP

Boston, MA · 02110

617-570-1000

Samuel L. Doskocil

Reg. 80312

Patent attorney

Wolf Greenfield & Sacks, P.C.

Boston, MA · 02210

617-646-8198

Scott J. Douglas

Reg. 81512

Patent attorney

Editas Medicine

Cambridge, MA · 02141

857-210-4876

Timothy J Douros

Reg. 41716

Patent attorney

bluebird bio, Inc.

Cambridge, MA · 02141

339-499-9300

Michael V. Dowd

Reg. 72600

Patent attorney

Brookline, MA · 02445

617-731-0549

Donald Smith Dowden

Reg. 20701

Patent attorney

South Hamilton, MA · 01982

978-468-1053

Marianne McLaughlin Downing

Reg. 42870

Patent attorney

Schneider Electric

Andover, MA · 02090

781-989-5142

Christopher E. Drabik

Reg. 55125

Patent attorney

Envivo Pharmaceuticals, Inc.

Watertown, MA · 02472

617-225-4221

Tonya S Drake

Reg. 57861

Patent attorney

IRobot Corp

Bedford, MA · 01730

781-430-3675

Micah T Drayton

Reg. 69906

Patent attorney

Caldwell Intellectual Property Law, LLC

Boston, MA · 02116

857-990-4942

Duane Henry Dreger

Reg. 48836

Patent attorney

Cesari and McKenna LLP

Boston, MA · 02109

617-951-2500

Ashley M. Dreis

Reg. 73811

Patent agent

Cooley LLP

Boston, MA · 02116-3736

617-937-2300

Charles H Dresser

Reg. 70797

Patent agent

Caldwell Law

Boston, MA · 02116

207-240-1203

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.