Connecticut

Patent attorneys in Connecticut

Connecticut hosts 752 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 Connecticut. 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 Pratt & Whitney, Bristol-Myers Squibb, and IP Advantagages, LLC.

Top cities in Connecticut

All practitioners in Connecticut

John Francis Levis

Reg. 34210

Patent attorney

Bristol-Myers Squibb

Wallingford, CT · 06492

203-677-3782

Holly Y Li

Reg. 58596

Patent attorney

IP Advantagages, LLC

Greenwich, CT · 06830

917-535-3596

Jinggao Li

Reg. 64450

Patent attorney

Dragon Sun Law Firm，PC

Norwalk, CT · 06825

631-741-9685

Guyan Liang

Reg. 63065

Patent attorney

BioXcel Therapeutics, Inc

New Haven, CT · 06511

475-281-6402

Larry Liberchuk

Reg. 40352

Patent attorney

Phillips Intellectual Property & Standards

Stamford, CT · 06905

203-351-5712

Victor E Libert

Reg. 24224

Patent attorney

Cantor Colburn LLP

Hartford, CT · 06103

860-286-2929

Stanley H Lieberstein

Reg. 22400

Patent attorney

Westport intellectual Property

Westport, CT · 06880

203-216-1996

Kyle A Light

Reg. 74246

Patent attorney

Perman & Green, LLP

Stratford, CT · 06614

203-259-1800

Victor P Lin

Reg. 66996

Patent agent

Whitmyer IP Group LLC

Stamford, CT · 06901

203-703-0800

David G Lincoln· Jr.

Reg. 57489

Patent attorney

Wiggin and Dana LLP

New Haven, CT · 06508-1832

203-498-4390

John C Linderman

Reg. 24420

Patent attorney

McCormick Paulding and Huber LLP

Hartford, CT · 06103

860-549-5290

Harvey A. Liu

Reg. 75952

Patent attorney

FARBER LLC

Shelton, CT · 06484

512-771-6494

Lance Y Liu

Reg. 45379

Patent attorney

Southbury, CT · 06488

203-706-9536

Alejandro J. Lluberes

Reg. 83918

Patent agent

Stonington, CT · 06378

203-506-7347

Andrea V Lockenour

Reg. 51962

Patent attorney

Boehringer-Ingelheim

Ridgefield, CT · 06877

203-798-4710

Tracey R Loughlin

Reg. 51969

Patent attorney

Pratt & Whitney

East Hartford, CT · 06108

860-565-6127

Stephen R. LoVerme· III

Reg. 72363

Patent attorney

Ryan, Mason & Lewis, LLP

Southport, CT · 06890

203-255-6560

Helena M. Lovick

Reg. 81300

Patent agent

Cantor Colburn LLC

Hartford, CT · 06103

860-286-2929

Jeremy C Lowe

Reg. 48085

Patent attorney

Axinn, Veltrop & Harkrider, LLP

Hartford, CT · 06103

860-275-8100

Yifeng Lu

Reg. 65770

Patent agent

Niantic, CT · 06357

860-857-9643

Timothy J Lubecki

Reg. 38953

Patent attorney

North Haven, CT · 06473

610-766-1614

Steven R. Ludwig

Reg. 36203

Patent attorney

Riverside, CT · 06878

203-637-9823

Joel Eric Lutzker

Reg. 29406

Patent attorney

Greenwich, CT · 06830

203-861-9474

Amy L Lydon

Reg. 66893

Patent attorney

Covidien

New Haven, CT · 06248

203-821-2817

Scott A Lydon

Reg. 66899

Patent attorney

McCormick, Paulding and Huber LLP

Hartford, CT · 06103

860-549-5290

George J Lyman

Reg. 44884

Patent attorney

West Hartford, CT · 06119

860-232-7920

Shirley S Ma

Reg. 44216

Patent attorney

Raytheon Technologies Corporation

East Hartford, CT · 06118

860-494-5494

George M MacDonald

Reg. 39284

Patent attorney

Hubbell Incorporated

Shelton, CT · 06484

475-882-4137

Francis J Maguire· Jr

Reg. 31391

Patent attorney

Ware, Fressola, Maguire & Barber LLP

Monroe, CT · 06468

203-261-1234

Ramsaran Maharajh· Jr

Reg. 48753

Patent attorney

Pratt & Whitney

E. Hartford, CT · 06108

860-557-0438

Common questions

Do I need a patent attorney based in Connecticut?

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 Connecticut-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 Connecticut?

752 active USPTO-registered patent practitioners list a Connecticut 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.