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, Verrill Dana, LLP, and RowanTree Law Group, PLLC.

Top cities in Connecticut

All practitioners in Connecticut

Joseph C. Drish

Reg. 66198

Patent attorney

McCarter & English, LLP

Hartford, CT · 06103

860-275-6746

Samuel J Du Boff

Reg. 25969

Patent attorney

Westport, CT · 06880

203-454-3474

Samantha E. R. Dundon

Reg. 83311

Patent agent

McCarter & English, LLP

Hartford, CT · 06103

860-275-6749

Patrick D. Duplessis

Reg. 68324

Patent attorney

Verrill Dana, LLP

Westport, CT · 06880

203-222-3116

Justin Louis Durelli

Reg. 74882

Patent attorney

McCormick, Paulding & Huber LLP

Hartford, CT · 06103

860-549-5290

Matthew S Dushek

Reg. 61921

Patent attorney

Pratt & Whitney

East Hartford, CT · 06118

860-422-3175

Kenneth F Dusyn

Reg. 26158

Patent attorney

Kenneth F. Dusyn & Associates

Windsor, CT · 06095

860-246-4600

Jessica A. Z. Eastman

Reg. 70430

Patent agent

Pfizer

Groton, CT · 06340

860-271-5731

Grant M Ehrlich

Reg. 56185

Patent attorney

Stites & Harbison

West Hartford, CT · 06107

860-616-5572

Marc A Ehrlich

Reg. 39966

Patent attorney

425 IP & Legal Consulting PLLC

Fairfield, CT · 06824

914-645-6694

Aaron Paul Eicoff

Reg. 76448

Patent agent

Engineered Progress, LLC

West Hartford, CT · 06105

347-628-1645

James Robert Epperson

Reg. 52867

Patent attorney

Bristol Myers Squibb

Wallingford, CT · 06492

203-677-6974

Tyreeana Quanae Epps

Reg. 903207

Limited recognition

University of Connecticut School of Law

Hartford, CT · 06105-2290

475-688-0714

Frank W. Eucalitto

Reg. 71877

Patent attorney

Verrill Dana, LLP

Westport, CT · 06880

203-222-3106

Robert Alexander Ellis Facey

Reg. 73364

Patent attorney

Alix, Yale, & Ristas, LLP

Hartford, CT · 06103

516-425-1313

Mark Farber

Reg. 34159

Patent attorney

Farber LLC

Shelton, CT · 06484

203-258-1305

Paul A Fattibene

Reg. 31694

Patent attorney

Fattibene and Fattibene

Southport, CT · 06890

203-255-4400

Eugene V Feldman

Reg. 43429

Patent agent

EVF Associates

Hamden, CT · 06514

203-287-9210

Alfredo G Fernandez

Reg. 69413

Patent attorney

Hartford, CT · 06103

860--25-1-5353

Emily M Ferriter Russo

Reg. 80599

Patent attorney

Day Pitney

Hartford, CT · 06103

860-275-0179

Kelly E. Field

Reg. 74273

Patent attorney

Pfizer Inc.

Groton, CT · 06340

860-715-1447

Stephan J Filipek

Reg. 33384

Patent attorney

Buckley Maschoff & Talwalkar LLC

New Canaan, CT · 06840

203-972-3460

Carson C K Fincham

Reg. 54096

Patent attorney

RowanTree Law Group, PLLC

Ridgefield, CT · 06877

203-438-6867

Magdalena M Fincham

Reg. 46085

Patent attorney

RowanTree Law Group, PLLC

Ridgefield, CT · 06877

203-438-6933

Richard S. Finkelstein

Reg. 56534

Patent attorney

RC Trademark Company, LLC

New Milford, CT · 06776

860-368-0040

Daniel J Fiorello

Reg. 63254

Patent agent

Locke Lord LLP

Stamford, CT · 06901

203-353-6804

Robert H Fischer

Reg. 30051

Patent attorney

New Canaan, CT · 06840

203-940-2722

William J Fitzpatrick

Reg. 58332

Patent agent

General Electric Global Patent Operation

Shelton, CT · 06484

518-573-2879

Eugene L Flanagan· III

Reg. 27634

Patent attorney

Eugene L. Flanagan lll, LLC

Wilton, CT · 06897

203-762-3226

Cynthia Ward Flanigan

Reg. 53969

Patent agent

River Patent Services, LLC

Tariffville, CT · 06081

860-818-7350

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.