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 Wolf, Greenfield & Sacks, P.C., Goodwin Procter LLP, and Barnes & Thornburg LLP.

Top cities in Massachusetts

All practitioners in Massachusetts

Sophia A. Ormord

Reg. 81024

Patent agent

Barnes & Thornburg LLP

Boston, MA · 02210

161-731-65314

Thomas Henry Osborn

Reg. 40752

Patent attorney

Saint-Gobain Corporation

Worcester, MA · 01615

508-795-2555

John A. Otterbein

Reg. 80331

Patent agent

Wolf, Greenfield & Sacks, P.C.

Boston, MA · 02110-2206

617-646-8764

Scott A Ouellette

Reg. 38573

Patent agent

SHARKNINJA OPERATING LLC

Needham, MA · 02494

603-401-4056

Steven B. Ouellette

Reg. 79564

Patent agent

Norwell, MA · 02061

269-870-5908

Miala Marie Outcalt

Reg. 903029

Limited recognition

Western New England University School of Law

Springfield, MA · 01119

518-210-4411

Lian Ouyang

Reg. 69254

Patent attorney

Novartis Institutes for Biomedical Research, Inc.

Cambridge, MA · 02139

617-871-3880

Katarina C. Overberg

Reg. 81488

Patent attorney

McCarter and English

Boston, MA · 02110

617-449-6614

Joshua L Overton

Reg. 77480

Patent attorney

McNamara & Yates, P.C.

Mashpee, MA · 02649

508-888-8100

Erin Phillips Owens

Reg. 72917

Patent attorney

Thermo Fisher Scientific

Waltham, MA · 02451

908-752-8624

Thomas J Owens

Reg. 71390

Patent agent

Biospark Intellectual Property

Cambridge, MA · 02142

512-289-8850

Timothy J Oyer

Reg. 36628

Patent attorney

Wolf, Greenfield & Sacks, P.C.

Boston, MA · 02210-2206

617-646-8251

Susan C Oygard

Reg. 42969

Patent attorney

Otis, MA · 01253

805-795-2124

Nicholas J Pace

Reg. 74316

Patent agent

Cooley LLP

Boston, MA · 02116

617-937-1463

Eden Joy V Pacsial-Ong

Reg. 73850

Patent agent

Stoneham, MA · 02180

617-930-3497

Melissa L Paddock

Reg. 53426

Patent attorney

Goodwin Procter LLP

Boston, MA · 02210

617-570-1000

Allegra J. Padula

Reg. 82687

Patent attorney

Goodwin Procter LLP

Boston, MA · 02210

617-570-1977

Samantha L. Pagan

Reg. 84269

Patent agent

Foley & Lardner LLP

Boston, MA · 02199

617-502-3204

Blaine A Page

Reg. 58800

Patent attorney

Euro-Pro

Newton, MA · 02459

617-904-7461

Steven C. Pageau

Reg. 80332

Patent attorney

Merck

Boston, MA · 02115

617-460-5404

Abigail L Paglia

Reg. 78729

Patent agent

Medlen & Carroll, LLP

Braintree, MA · 02184

781-848-4020

Paul J Paglierani

Reg. 52498

Patent attorney

Takeda Pharmaceuticals International Co.

Cambridge, MA · 02139

617-551-7996

Ronald J Paglierani

Reg. 29201

Patent attorney

Ronald J. Paglierani, Esq.

Scituate, MA · 02066

781-545-6766

Joseph H Pak

Reg. 50738

Patent agent

Longmeadow, MA · 01106

413-567-9774

Daniel A. Palmer

Reg. 73994

Patent attorney

Cesari and McKenna LLP

Boston, MA · 02109

617-951-2500

Kylie K. Palmer

Reg. 80171

Patent agent

Boston, MA · 02115

808-265-2496

Nicole A Palmer

Reg. 58943

Patent attorney

Lando and Anastasi LLP

Cambridge, MA · 02142

617-395-7000

Kaleb Y. Pan

Reg. 67454

Patent attorney

The Law Office of Kaleb Pan

Andover, MA · 01810

978-685-0254

Krysti Papadopoulos

Reg. 84705

Patent attorney

Lowell, MA · 01853

619-786-0997

Joanne N Pappas

Reg. 40117

Patent attorney

The Procter & Gamble Company

Boston, MA · 02127

617-463-4097

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.