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 Farber LLC, Robinson & Cole, and Sikorsky Aircraft Corporation.

Top cities in Connecticut

All practitioners in Connecticut

James R Nault

Reg. 62847

Patent attorney

Robinson & Cole

Hartford, CT · 06103-3597

860-275-8212

Lawrence Wilfred Nelson

Reg. 34684

Patent attorney

Sikorsky Aircraft Corporation

Stratford, CT · 06615

203-386-3862

Charles G Nessler

Reg. 27825

Patent attorney

Chester, CT · 06412

860-526-9149

Chuong T. Nguyen

Reg. 79000

Patent attorney

RTX Corporation

East Hartford, CT · 06118

860-371-6087

Jacqueline M Nguyen

Reg. 75321

Patent attorney

Farber LLC

Shelton, CT · 06484

203-286-5925

Tram Anh T Nguyen

Reg. 47257

Patent attorney

Farber LLC

Shelton, CT · 06484

203-286-5266

Alphonse R Noe

Reg. 25603

Patent attorney

Weston, CT · 06883

203-341-9553

Joseph Victor Noferi

Reg. 75080

Patent attorney

RUGGIERO MCALLISTER & MCMAHON LLC

Stamford, CT · 06901

203-293-7854

Martin F Noonan

Reg. 42939

Patent attorney

Pitney Bowes Inc.

Shelton, CT · 06484

203-922-6923

Kelly M Nowak

Reg. 47898

Patent attorney

DeLio & Peterson, LLC

New Haven, CT · 06511

203-787-0595

Raymond Anthony Nuzzo

Reg. 37199

Patent attorney

Law Offices Of Raymond A. Nuzzo, LLC

East Haven, CT · 06512

203-467-7895

Maria Nuzzolillo

Reg. 79913

Patent attorney

Clinton, CT · 06413

203-379-7083

Charles Francis O'Brien

Reg. 47314

Patent attorney

Cantor Colburn LLP

Hartford, CT · 06103

860-286-2929

Sean Welch O'Brien

Reg. 37689

Patent attorney

Pratt & Whitney

East Hartford, CT · 06118

860-709-5297

Carmella A O'Gorman

Reg. 33749

Patent attorney

Milford, CT · 06460

203-876-8026

David M O'Neill

Reg. 35304

Patent attorney

New Haven, CT · 06512

203-467-0759

Todd M Oberdick

Reg. 44268

Patent attorney

Forge IP, PLLC

Shelton, CT · 06484

203-204-1260

Keith R. Obert

Reg. 58051

Patent attorney

Ware, Fressola, Maguire & Barber LLP

Monroe, CT · 06460

203-261-1234

George I. Obiora

Reg. 84348

Patent agent

New Haven, CT · 06511

317-824-0917

Patricia Ann Olosky

Reg. 53411

Patent attorney

Shipman & Goodwin LLP

Hartford, CT · 06103

860-251-5179

Dara Lynn Onofrio

Reg. 34889

Patent attorney

Onofrio Law

Clinton, CT · 06413

860-552-0770

Scott S Orenstein

Reg. 68266

Patent attorney

Gerber Ciano Kelly Brady LLP

Rocky Hill, CT · 06067

860-785-4629

Ryan S Osterweil

Reg. 67065

Patent attorney

Day Pitney LLP

Stamford, CT · 06901-3236

203-977-7300

Jason M Ostrosky

Reg. 61322

Patent attorney

Shelton, CT · 06484

203-929-4502

Paul John Otterstedt

Reg. 37411

Patent attorney

Otterstedt, Ellenbogen & Kammer, LLP

Greenwich, CT · 06830

203-433-3157

Randall L Owen

Reg. 36368

Patent agent

Hartford Healthcare

Willington, CT · 06279

475-434-1183

Salvatore P Pace

Reg. 30206

Patent attorney

Praxair, Inc.

Danbury, CT · 06810

203-837-2034

Anthony M Palazzolo· Jr

Reg. 39323

Patent attorney

The Patent Source

North Stonington, CT · 06359

860-599-8507

Weitao Pan

Reg. 81352

Patent agent

Old Saybrook, CT · 06475

908-240-8747

John M Paoff

Reg. 64535

Patent agent

Manchester, CT · 06042

419-708-1038

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.