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 University of Connecticut School of Law, Cantor Colburn LLP, and Buckley, Maschoff & Talwalkar LLC.

Top cities in Connecticut

All practitioners in Connecticut

Donald T Black

Reg. 27999

Patent attorney

Praxair, Inc.

Danbury, CT · 06810

203-837-2669

Harry Abraham Black

Reg. 902809

Limited recognition

University of Connecticut School of Law

Hartford, CT · 06105-2290

959-236-7199

Michael A Blake

Reg. 42333

Patent attorney

Law Offices of Michael A. Blake, LLC

Milford, CT · 06460

203-876-5081

Michelle E Blevins

Reg. 67846

Patent agent

Pratt & Whitney, a division of RTX Corp., through Lextronica, Inc.

East Hartford, CT · 06118

931-534-8383

William J Bohdan

Reg. 39614

Patent attorney

Darien, CT · 06820

203-656-2786

Gene Bolmarcich

Reg. 35827

Patent attorney

Newington, CT · 06111

609-651-1261

T. David Bomzer

Reg. 48770

Patent attorney

Cantour Colburn LLP

Hartford, CT · 06103-3207

860-286-2929

Lisa A Bongiovi

Reg. 48933

Patent attorney

Carrier Corporation

Farmington, CT · 06034

860-674-3457

Kara Bonitatibus

Reg. 51484

Patent attorney

Norwalk, CT · 06853

914-419-7466

Brett J Boskiewicz

Reg. 50410

Patent attorney

Robinson & Cole LLP

Hartford, CT · 06103-3597

860-275-8200

Russell Howard Bovee

Reg. 902810

Limited recognition

University of Connecticut School of Law

Hartford, CT · 06105-2290

Raymond Bower

Reg. 32198

Patent attorney

Catier & Bower, LLC

Guilford, CT · 06437

203-458-1477

Paul I Brachmann

Reg. 38752

Patent attorney

Enfield, CT · 06082

860-741-2107

Johan O Brag

Reg. 66881

Patent attorney

Innova Law LLC

Westport, CT · 06880

203-259-7736

Robert L Branham

Reg. 66536

Patent attorney

Amphenol Corporation

Wallingford, CT · 06492

203-265-8544

James P. Breen

Reg. 75235

Patent agent

Danbury, CT · 06811

203-947-9349

Michael H Brodowski

Reg. 41640

Patent attorney

Cantor Colburn LLP

Hartford, CT · 06103-3207

860-286-2929

Michael H Brothers

Reg. 68380

Patent attorney

The Law Offices of Michael H. Brothers

Niantic, CT · 06357

860-739-7312

Lewis Clifford Brown

Reg. 20370

Patent attorney

Rowayton, CT · 06853

203-853-0533

Ronald E Brown

Reg. 32200

Patent attorney

Fairfield, CT · 06824

203-259-5650

Patrick J Buckley

Reg. 40928

Patent attorney

Buckley, Maschoff & Talwalkar LLC

New Canaan, CT · 06840

203-972-0191

Arpita G. Buesing

Reg. 71741

Patent attorney

Edwards Wildman Palmer LLP

Stamford, CT · 06901

203-353-6808

Richard S Bullitt

Reg. 30733

Patent attorney

Darien, CT · 06820

203-316-0429

Aaron P Bumgarner

Reg. 53860

Patent attorney

Cantor Colburn, LLP

Stamford, CT · 06907

203-939-6829

Garth C Butterfield

Reg. 36997

Patent agent

Ziegler IP Law Group

Westport, CT · 06880

203-659-0388

Nicholas P. Caiafa

Reg. 76156

Patent attorney

McCarter & English LLP

Hartford, CT · 06103

860-275-6786

Jennifer Ann Calcagni

Reg. 50207

Patent attorney

Carmody Torrance Sandak & Hennessey LLP

New Haven, CT · 06509-1950

203-575-2648

Randolph P Calhoune

Reg. 45371

Patent attorney

Buckley, Maschoff & Talwalkar LLC

New Canaan, CT · 06840

203-972-5985

William H Calnan· IV

Reg. 29520

Patent attorney

Norwalk, CT · 06851

203-847-3308

Michael A Cantor

Reg. 31152

Patent attorney

Cantor Colburn LLP

Hartford, CT · 06103

860-286-2929

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.