New Hampshire

Patent attorneys in New Hampshire

New Hampshire hosts 206 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 New Hampshire. 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 UNH Franklin Pierce School of Law, Maine Cernota & Rardin, and Arcane Law PLLC.

Top cities in New Hampshire

Manchester46 Concord44 Nashua20 Portsmouth10 Amherst7 Bedford5 Salem5 Gilford4 Lebanon4 Londonderry4 Hanover4 Atkinson2 Dover2 Hampton2 Milford2 Auburn2 Hudson2 Lee2 Hollis2 Meredith2

All practitioners in New Hampshire

Paul J Kroon· Jr

Reg. 51902

Patent attorney

Grossman, Tucker, Perreault & Pfleger, PLLC

Manchester, NH · 03101

603-668-6560

Ross K Krutsinger

Reg. 67393

Patent attorney

Finch & Maloney, PLLC

Manchester, NH · 03101

603-622-8456

Sumit Kumar Kushwaha

Reg. 903095

Limited recognition

UNH Franklin Pierce School of Law

Concord, NH · 03301

603-219-8697

Butch W Laker

Reg. 81294

Patent attorney

Grossman, Tucker, Perreault & Pfleger, PLLC

Manchester, NH · 03101

603-668-6560

Alexandra L Lakshmanan

Reg. 70264

Patent agent

Concord, NH · 03301

217-855-3309

Gary E Lambert

Reg. 35925

Patent attorney

Lambert & Associates

Nashua, NH · 03060

603-438-6333

Michelle B Lando

Reg. 33941

Patent attorney

GTAT Corporation

Hudson, NH · 03051

603-417-2227

Michael J Landry

Reg. 54250

Patent attorney

Manchester, NH · 03109

603-622-7686

Gary Henry Lantner

Reg. 28798

Patent attorney

Gilford, NH · 03249

281-813-7581

David P Lentini

Reg. 33944

Patent attorney

Lentini Consulting

Nashua, NH · 03060

207-636-0003

Donna L Lizotte

Reg. 59975

Patent attorney

Lizotte Law Office, PLLC

E. Kingston, NH · 03827

603-770-2830

William A Loginov

Reg. 34863

Patent attorney

Loginov & Associates, PLLC

Concord, NH · 03301

603-336-3026

Daniel Joseph Long

Reg. 29404

Patent attorney

Maine Cernota & Rardin

Nashua, NH · 03063-4000

603-886-6100

Mark D Lorusso

Reg. 41955

Patent attorney

Lorusso Loud & Kelly, LLP

Portsmouth, NH · 03801

603-427-0070

Christopher P Loughnane

Reg. 70842

Patent agent

Farm Design Inc.

Hollis, NH · 03049

603-400-1248

Melissa L.B. Lyons

Reg. 52592

Patent attorney

Sig Sauer, Inc

Newington, NH · 03801-6801

603-610-3105

Mona L MacDonald

Reg. 44887

Patent attorney

Elliot Heath System

Manchester, NH · 03103-3599

603-663-2853

Vernon Carl Maine

Reg. 37389

Patent attorney

Maine Cernota & Rardin

Nashua, NH · 03063

603-886-6100

Thomas E. Malone

Reg. 40078

Patent attorney

Bedford, NH · 03110-4915

510-314-3625

Neil F Maloney

Reg. 42833

Patent attorney

Arcane Law PLLC

Amherst, NH · 03031

603-932-2028

Kevin D. Mandro

Reg. 77506

Patent agent

Toohey Law Group LLC

Manchester, NH · 03101

603-206-0384

Francis Edward Marino

Reg. 37879

Patent agent

Marino Patent Agency

Meredith, NH · 03253

603-279-0159

Jennifer A Marrs

Reg. 64784

Patent agent

Long View Consulting LLC

Cornish, NH · 03745

603-865-7260

Joanne M Martin

Reg. 29328

Patent attorney

Concord, NH · 03301

603-228-1611

Michael L. Mathaisel

Reg. 64251

Patent attorney

Arcane Law PLLC

Amherst, NH · 03031

603-207-2330

Thomas J McGinnis

Reg. 58026

Patent attorney

Finch & Maloney PLLC

Manchester, NH · 03101

603-622-8456

Allison L. McGregor

Reg. 82887

Patent attorney

The Toohey Law Group LLC

Manchester, NH · 03101

603-206-0313

Brooks Ambrose Mihalek

Reg. 901861

Limited recognition

UNH Franklin Pierce School of Law

Concord, NH · 03301

860-924-8641

Jaden Militello

Reg. 903090

Limited recognition

UNH Franklin Pierce School of Law

Concord, NH · 03301

401-829-8099

Cyrus A. Miller

Reg. 71520

Patent agent

Pierce Atwood LLP

Portsmouth, NH · 03801

518-928-7694

Common questions

Do I need a patent attorney based in New Hampshire?

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 New Hampshire-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 New Hampshire?

206 active USPTO-registered patent practitioners list a New Hampshire 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.