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 McCarter & English, LLP, Cantor Colburn LLP, and McCarter & English LLP.

Top cities in Connecticut

All practitioners in Connecticut

Mark D. Giarratana

Reg. 32615

Patent attorney

McCarter & English LLP

Hartford, CT · 06103

860-275-6700

Robert J Gibbons· Jr

Reg. 69345

Patent attorney

Wilton, CT · 06897

212-518-7522

Daniel R Gibson

Reg. 56539

Patent attorney

Cantor Colburn LLP

Hartford, CT · 06103

860-286-2929

Dana M Gilland

Reg. 38832

Patent attorney

Energizer

Shelton, CT · 06484

203-944-5848

Daniel A Gilmour

Reg. 59059

Patent agent

Cantor Colburn LLP

Hartford, CT · 06103

860-286-2929

Charles A Glover

Reg. 50923

Patent attorney

Greenwich, CT · 06870

203-698-2002

Michael W Glynn

Reg. 27285

Patent attorney

Darien, CT · 06820

203-348-7893

Cole A Goike

Reg. 75461

Patent agent

ASML

Wilton, CT · 06897

203-761-4000

Jacob J. Golan

Reg. 83894

Patent attorney

Day Pitney LLP

Stamford, CT · 06901

917-922-7653

Gabriel R. W. Goldman

Reg. 61343

Patent agent

McCarter & English, LLP

Stamford, CT · 06901

203-399-5941

Wendy M. Gombert

Reg. 61968

Patent attorney

Boehringer Ingelheim Vetmedica, Inc.

Ridgefield, CT · 06877-0368

203-791-6109

Charles D Goodwin

Reg. 50509

Patent agent

Univ Of Connecticut

Farmington, CT · 06030

860-679-8800

David P Gordon

Reg. 29996

Patent attorney

Gordon & Jacobson, P.C.

Stamford, CT · 06902

203-323-1800

Weston R Gould

Reg. 59142

Patent attorney

Dinsmore & Shohl LLP

Groton, CT · 06340

248-918-4887

William B Gowanlock

Reg. 41794

Patent attorney

Madison, CT · 06443

203-245-7542

William F Gray

Reg. 31018

Patent attorney

Guilford, CT · 06437

203-453-8386

Paul D Greeley

Reg. 31019

Patent attorney

Ohlandt Greeley & Perle LLP

Stamford, CT · 06901

203-327-4500

Clarence A Green

Reg. 24622

Patent attorney

Fairfield, CT · 06824

203-259-6182

Karen J Greenberg

Reg. 45789

Patent attorney

Law Office of Karen J. Greenberg

Stafford, CT · 06074

860-647-2417

Michael A Greene

Reg. 80634

Patent attorney

Quantum-Si, Inc.

Branford, CT · 06405

617-386-3411

Seth David Greenstein

Reg. 57337

Patent attorney

Westport, CT · 06880

408-605-3709

Linda C Grelotti

Reg. 52968

Patent attorney

Newington, CT · 06111

860-666-1664

Robert W Griffith

Reg. 48956

Patent attorney

Getz Balich LLC

Farmington, CT · 06032

860-470-4700

Wm Tucker Griffith

Reg. 44726

Patent attorney

McCormick Paulding & Huber, LLP

Hartford, CT · 06103

860-549-5290

Paul L Griffiths

Reg. 34343

Patent attorney

Law Offices of Paul L. Griffiths

Sandy Hook, CT · 06482

203-895-7140

Michael Grillo

Reg. 34612

Patent attorney

Cidra Corporate Services Inc.

Walllingford, CT · 06492

203-626-3341

Wayne R Grohs

Reg. 48945

Patent attorney

McCarter & English, LLP

Hartford, CT · 06103

860-275-6788

Eric E Grondahl

Reg. 46741

Patent attorney

McCarter & English, LLP

Hartford, CT · 06103

860-275-6704

Alyssa N Grooms

Reg. 75902

Patent attorney

Pratt & Whitney

East Hartford, CT · 06118

815-603-6258

Roy D. Gross

Reg. 63524

Patent attorney

Wilton, CT · 06897

203-423-0235

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.