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., Holland & Bonzagni, PC, and Wolf Greenfield & Sacks, P.C..

Top cities in Massachusetts

All practitioners in Massachusetts

Donald S Holland

Reg. 29391

Patent attorney

Holland & Bonzagni, PC

Longmeadow, MA · 01106

413-567-2076

Dustin T Holloway

Reg. 63262

Patent agent

Cambridge, MA · 02141

617-455-7639

Minita G Holloway

Reg. 67594

Patent attorney

Wolf Greenfield & Sacks, P.C.

Boston, MA · 02210

617-646-8286

Teodor J Holmberg

Reg. 50140

Patent attorney

tidge.com

Florence, MA · 01062

401-225-4538

Stephen John Holmes

Reg. 34621

Patent attorney

Hinckley, Allen & Snyder, LLP

Boston, MA · 02109

617-345-9000

Zachariah E. Holmes

Reg. 76826

Patent agent

Goodwin Procter LLP

Boston, MA · 02210

212-459-7408

Jason Mark Honeyman

Reg. 31624

Patent attorney

Wolf, Greenfield & Sacks, P.C.

Boston, MA · 02210

617-646-8222

Eun Jin E Hong

Reg. 82205

Patent attorney

Foley Hoag LLP

Boston, MA · 02210-2600

617-832-1174

Seunghyun Lammie Hong

Reg. 82185

Patent agent

Fox Rothschild LLP

Boston, MA · 02110

617-848-4029

Jenny H Hong-Gonzalez

Reg. 69476

Patent attorney

Kenai Therapeutics

Cambridge, MA · 02142

408-375-4783

Thomas Owen Hoover

Reg. 32470

Patent attorney

McCarter & English LLP

Boston, MA · 02110

617-449-6500

Kurt T Hoppmann

Reg. 77128

Patent attorney

Saul Ewing

Boston, MA · 02116

617-912-0953

Daniel Austin Horowitz

Reg. 46779

Patent attorney

SRPEDD

Taunton, MA · 02780

508-824-1367

Lillian R Horwitz

Reg. 57040

Patent agent

Millennium Pharmaceutical, Inc.

Cambridge, MA · 02139

617-444-1476

Hartley Hoskins

Reg. 33903

Patent agent

Falmouth, MA · 02540

508-548-0179

Stephen M. Hou

Reg. 75979

Patent agent

American Patent Agency PC

Cambridge, MA · 02139

609-891-8803

Joseph Grant Houston

Reg. 35900

Patent attorney

Houston & Associates, LLP

Billerica, MA · 01821

781-454-7762

Robert L Hover

Reg. 67335

Patent attorney

Verill Dana, LLP

Boston, MA · 02110

617-292-2871

John C. Hovestadt

Reg. 80320

Patent attorney

Wolf Greenfield

Boston, MA · 02210

617-646-8348

William C. Howland· III

Reg. 82561

Patent agent

Choate, Hall & Stewart LLP

Boston, MA · 02110

617-248-4733

David A Howley

Reg. 34624

Patent attorney

Dingman IP Law, PC

Westborough, MA · 01581

508-558-7655

Jonathan M. Hromi

Reg. 77413

Patent attorney

MIT

Cambridge, MA · 02142

617-253-6966

Gerald B Hrycyszyn

Reg. 50474

Patent attorney

Wolf, Greenfield & Sacks, P.C.

Boston, MA · 02210-2206

617-646-8313

Jeffrey D Hsi

Reg. 40024

Patent attorney

Wolf, Greenfield & Sacks, P.C.

Boston, MA · 02210-2206

617-646-8556

Weber Hsiao

Reg. 67180

Patent attorney

Takeda Development Center Americas, Inc.

Cambridge, MA · 02142

617-775-4052

David Hsu

Reg. 77816

Patent attorney

Rocket Software

Waltham, MA · 02451

781-577-4323

Oscar K Hsu

Reg. 56858

Patent agent

Service Science & Engineering LLC

Chelmsford, MA · 01824

978-204-7388

Ping Hu

Reg. 61206

Patent attorney

Mirick, O'Connell, DeMallie & Lougee, LLP

Boston, MA · 02110

617-391-2168

Xiangjun Hu

Reg. 67233

Patent agent

Northborough, MA · 01532

508-690-0866

Carolyn J. Huang

Reg. 83980

Patent agent

Wilson Sonsini Goodrich & Rosati

Boston, MA · 02108

617-733-7854

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.