Massachusetts

Patent attorneys in Massachusetts

Massachusetts hosts 2,869 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., Finnegan, Henderson, Farabow, Garrett & Dunner, LLP, and Wolf Greenfield & Sacks P.C..

Top cities in Massachusetts

All practitioners in Massachusetts

Adrienne Zagieboylo

Reg. 82753

Patent agent

Wolf Greenfield & Sacks P.C.

Boston, MA · 02210

617-646-8771

Christopher T Zambuto

Reg. 66249

Patent attorney

Somerville, MA · 02145

617-733-3469

Jennifer Anne Zarutskie

Reg. 50558

Patent attorney

Millis, MA · 02054

617-699-0469

Zoran Z Zdraveski

Reg. 64267

Patent attorney

Epizyme Inc

Cambridge, MA · 02139

617-500-0624

Max D. Zegers

Reg. 83072

Patent agent

Wolf, Greenfield & Sacks, P.C.

Boston, MA · 02210-2206

617-646-8660

Adam S. Zeiger

Reg. 76246

Patent attorney

Wolf Greenfield & Sacks, P.C.

Boston, MA · 02210-2206

617-646-8485

Yingying Zeng

Reg. 70215

Patent attorney

ElevateBio

Waltham, MA · 02451

650-804-0884

Serhan Zenger

Reg. 74855

Patent agent

Allston, MA · 02134

617-953-5284

Raymond W Zenkert· III

Reg. 76506

Patent attorney

GTC Law Group PC & Affiliates

Westwood, MA · 02090

413-537-1761

Heng Zhang

Reg. 79081

Patent agent

Bristol Myers Squibb

Cambridge, MA · 02141

857-816-8888

Jialan Zhang

Reg. 77567

Patent agent

Quincy, MA · 02171

860-987-8609

Li Zhang

Reg. 74094

Patent agent

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Boston, MA · 02210

617-646-1648

Liguo Zhang

Reg. 84637

Patent agent

Lexington, MA · 02421

217-607-6595

Mengmeng Zhang

Reg. 76067

Patent attorney

Wilson, Sonsini, Goodrich & Rosati

Boston, MA · 02108

617-598-7814

Mengwen Zhang

Reg. 80721

Patent agent

Wolf, Greenfield & Sacks, P.C.

Boston, MA · 02210-2206

617-646-8000

Pei Zhang

Reg. L1343

Limited recognition

Hsuanyeh Law Group, PC

Boston, MA · 02108

617-886-9088

Qi Zhang

Reg. L1394

Limited recognition

Senko Advanced Components Inc.

Hudson, MA · 01749

213-709-7276

Qian Zhang

Reg. 59287

Patent agent

Sunovion Pharmaceuticals, Inc.,

Marlborough, MA · 01752

774-369-7124

Ruijie Zhang

Reg. 81092

Patent agent

Hamilton, Brook, Smith & Reynolds, P.C.

Lincoln, MA · 01773

617-607-5914

Wei Zhang

Reg. 71090

Patent agent

Novartis

Cambridge, MA · 02139

617-871-8000

William Wei Zhang

Reg. 69059

Patent attorney

Wolf, Greenfield & Sacks, P.C.

Boston, MA · 02210

617-646-8257

Xiaolei Zhang

Reg. 64630

Patent attorney

Walpole, MA · 02032

617-605-4215

Xin Zhang

Reg. 62139

Patent attorney

McCarter & English, LLP

Boston, MA · 02110

617-449-6500

Xinyi Zhang

Reg. 800147

Limited recognition

K&L Gates

Boston, MA · 02114

617-951-9109

Xirui Zhang

Reg. 78809

Patent attorney

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Boston, MA · 02210-2001

617-646-1626

Yan Zhang

Reg. 68683

Patent agent

Lexington, MA · 02421

978-408-0430

Yin Philip Zhang

Reg. 44372

Patent attorney

Milstein Zhang & Wu LLC

Newton, MA · 02465

617-529-8369

Ying Zhang

Reg. 83217

Patent agent

Goodwin Procter LLP

Boston, MA · 02210

617-570-1000

Yuying Zhang

Reg. 80522

Patent agent

Boston, MA · 02199

404-375-8394

Hanchao Zhao

Reg. 77958

Patent attorney

Fish & Richardson P.C.

Boston, MA · 02210

617-368-2182

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?

2,869 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.