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 Cantor Colburn LLP, COSUD Intellectual Property Solutions, P.C., and Ohlandt Greeley & Perle, LLP.

Top cities in Connecticut

All practitioners in Connecticut

Philmore H Colburn· II

Reg. 35101

Patent attorney

Cantor Colburn LLP

Hartford, CT · 06103

860-286-2929

Henry D Coleman

Reg. 32559

Patent attorney

COSUD Intellectual Property Solutions, P.C.

Bridgeport, CT · 06605-1601

203-366-3560

Jack A Collora

Reg. 80879

Patent agent

New Haven, CT · 06511

951-323-9095

Gerald L.ynn Coon

Reg. 29910

Patent attorney

Ohlandt Greeley & Perle, LLP

Stamford, CT · 06901-2682

203-327-4500

Michael J. Cooper

Reg. 57749

Patent agent

Ryan, Mason & Lewis, LLP

Fairfield, CT · 06824

203-255-6560

Steven T Cooper

Reg. 65716

Patent attorney

Ware, Fressola, Van Der Sluys & Adolphson, LLP

Monroe, CT · 06468

203-261-1234

Nicole E Coppes-Gathy

Reg. 46640

Patent attorney

United Technologies Corporation-Pratt & Whithey

East Hartford, CT · 06118

860-565-3195

John Louis Cordani

Reg. 37297

Patent attorney

Carmody Torrance Sandak and Hennessey LLP

Waterbury, CT · 06702

203-575-5646

John L Cordani· Jr.

Reg. 65305

Patent agent

Wolcott, CT · 06716

203-206-6291

Robert A Cordery

Reg. 45632

Patent agent

Pitney Bowes, Inc.

Shelton, CT · 06484

203-922-4127

Robert W Coughlin

Reg. 39153

Patent agent

University of Conneticut

Storrs, CT · 06269

860-486-2012

George A Coury

Reg. 34309

Patent attorney

Bachman and LaPointe PC

New Haven, CT · 06510

203-777-6628 X113

Diane F Covello

Reg. 34164

Patent attorney

Alix, Yale & Ristas, LLP

Hartford, CT · 06103-2721

860-527-9211

John H. Cowles· Jr

Reg. 80211

Patent agent

Robinson & Cole, LLP

Hartford, CT · 06103

860-505-5527

Teresa B. Cowles

Reg. 80212

Patent agent

Unionville, CT · 06085

860-508-1005

Robert D Crawford· II

Reg. 38119

Patent attorney

Dilworth IP

New Haven, CT · 06513

203-220-8496

William Chenault Crutcher

Reg. 19279

Patent attorney

Middlebury, CT · 06762

203--75-8-2766

Bernardo G Cuadra

Reg. 63931

Patent agent

Shipman and Goodwin LLP

Hartford, CT · 06103

860-251-5770

James J Cummings

Reg. 51263

Patent attorney

Henkel

Stamford, CT · 06901

475-299-9181

Michael J Cummings

Reg. 46650

Patent attorney

Deloitte

Stamford, CT · 06901

203-423-4726

Ronald Gary Cummings

Reg. 28405

Patent attorney

Madison, CT · 06443

860-445-8888

Linda A P Cunha

Reg. 45767

Patent attorney

OTIS ELEVATOR COMPANY

Farmington, CT · 06034

860-830-0112

David T Cunningham

Reg. 38418

Patent attorney

The Hartford Financial Services Group, Inc.

Hartford, CT · 06155

860-547-2647

Marina F Cunningham

Reg. 38419

Patent attorney

McCormick Paulding and Huber LLP

Hartford, CT · 06103

860-549-5290

Pamela J Curbelo

Reg. 34676

Patent attorney

Cantor Colburn LLP

Hartford, CT · 06103

860-286-2929

Robert Curcio

Reg. 44638

Patent attorney

DeLio & Peterson, LLC

New Haven, CT · 06511

202-787-0595

Taylor M. Curtis

Reg. 72296

Patent attorney

Henkel Corporation

Rocky Hill, CT · 06067

860-571-2568

Nelson S DaCunha

Reg. 63592

Patent attorney

Otis Elevator Company

Farmington, CT · 06032

860-674-3312

Nilay S Dalal

Reg. 56069

Patent agent

Danbury, CT · 06810

312-321-4200

John J Daniels

Reg. 34808

Patent attorney

Harrington & Smith

Shelton, CT · 06484

203-925-9400

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.