Connecticut

Patent attorneys in Connecticut

Connecticut hosts 744 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 Purdue Pharma LP, Buckley, Maschoff & Talwlkar, LLC, and Alix, Yale & Ristas, LLP.

Top cities in Connecticut

All practitioners in Connecticut

Stavros A Katsetos

Reg. 64394

Patent attorney

Stamford, CT · 06905

845-242-5019

Richard Jay Katz

Reg. 47698

Patent attorney

Buckley, Maschoff & Talwlkar, LLC

New Canaan, CT · 06840

203-594-9997

Clifford Paul Kelly

Reg. 35213

Patent agent

Alix, Yale & Ristas, LLP

Hartford, CT · 06103

860-527-9211

Robert H Kelly

Reg. 28961

Patent attorney

Robert H. Kelly

West Hartford, CT · 06107

860-521-3522

Yolanda Lynnette Kelly

Reg. 60010

Patent attorney

Y.L. Kelly, ESQ.

Clinton, CT · 06413

860-664-1053

Barry Lee Kelmachter

Reg. 29999

Patent attorney

Bachman and LaPointe PC

New Haven, CT · 06510

203-777-6628114

Evan J Kennedy

Reg. 84164

Patent agent

South Windsor, CT · 06074

860-212-6909

David L Kershner

Reg. 53112

Patent attorney

Boehringer Ingelheim Corporation

Ridgefield, CT · 06877

203-798-5469

Jeffrey C Kessler

Reg. 57727

Patent attorney

Arvinas, Inc.

New Haven, CT · 06511

475-302-1858

Michael K Kinney

Reg. 42740

Patent attorney

Michaud-Duffy Group LLP

Middletown, CT · 06457-1532

860-632-7200

Joseph C Kirincich

Reg. 38734

Patent attorney

Bridgewater Associates, LP

Westport, CT · 06880

203-226-3030

Christopher H Kirkman

Reg. 46223

Patent attorney

The Travelers Companies, Inc.

Hartford, CT · 06183

860-954-1958

Jennifer A Kispert

Reg. 40049

Patent attorney

East Lyme, CT · 06333-1448

860-460-3118

Maurice Melton Klee

Reg. 30399

Patent attorney

Law Office of Maurice Klee

Fairfield, CT · 06824

203-255-1400

Marylin Klosty

Reg. 18137

Patent attorney

Danbury, CT · 06811

203-744-5590

William J Knotts· Jr

Reg. 53145

Patent attorney

Perman & Green, LLP

Fairfield, CT · 06430

203-259-1800

Bruce J Koch

Reg. 41905

Patent attorney

Purdue Pharma LP

Stamford, CT · 06901-3431

203-588-7876

Justin T Kocian

Reg. 83720

Patent attorney

South Glastonbury, CT · 06073

860-455-8840

Alan Leonard Koller

Reg. 37371

Patent attorney

Arvinas

New Haven, CT · 06511

203-249-6230

Chris Paul Konkol

Reg. 30721

Patent agent

Cantor Colburn LLP

Hartford, CT · 06103

860-286-2929

Richard Kornutik

Reg. 27567

Patent attorney

Westport, CT · 06880

203-858-9887

Laurie Gathman Kowalsky

Reg. 37520

Patent attorney

Stamford, CT · 06901

516-509-7711

Kristin A Kraiza

Reg. 53155

Patent agent

Granby, CT · 06035

860-653-4480

Barry Kramer

Reg. 20622

Patent attorney

Edwards Angell & Palmer, LLP

Stamford, CT · 06901

203-353-6841

Robert John Kraus

Reg. 26358

Patent attorney

Robert J. Kraus

Danbury, CT · 06811

203-794-1011

Martin A Krawshuk

Reg. 39735

Patent attorney

West Hartford, CT · 06117

860-232-9527

Rachel S Kreppel

Reg. 47718

Patent attorney

Purdue Pharma LP

Stamford, CT · 06901

203-588-8000

Stephen N. Kulhanek

Reg. 76240

Patent attorney

Murtha Cullina LLP

Stamford, CT · 06901

203-653-5457

Mark H Kulos

Reg. 36191

Patent attorney

Norwich, CT · 06360

860-823-7495

Jeffrey Fred Kushin

Reg. 30276

Patent agent

Glastonbury, CT · 06033

860-633-3066

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?

744 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.