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 Cantor Colburn LLP, LeapFrog Patent Solution, and Dilworth IP, LLC.

Top cities in Connecticut

All practitioners in Connecticut

Andrea C Walsh

Reg. 34988

Patent agent

LeapFrog Patent Solution

BERLIN, CT · 06037

203-694-9070

Justin C. Ward

Reg. 66349

Patent attorney

Dilworth IP, LLC

Trumbull, CT · 06611

203-220-8496

James T Wasicak

Reg. 50803

Patent attorney

Pfizer Inc.

Groton, CT · 06340

860-715-6714

Damian G Wasserbauer

Reg. 34749

Patent attorney

Wasserbauer Law LLC

Collinsville, CT · 06022

860-266-1779

Robert Fillmore Weir

Reg. 47204

Patent attorney

The Hartford Steam Boiler Inspection

Hartford, CT · 06102

860-722-5637

Lori A. Weisenbach

Reg. 40219

Patent agent

Simsbury, CT · 06070

954-856-3191

Walter B Welsh

Reg. 64424

Patent attorney

Welsh IP Law LLC

Darien, CT · 06820

203-321-6303

Steven T. Wernicki

Reg. 39416

Patent attorney

ASML

Wilton, CT · 06897

401-207-4653

Benjamin C. White

Reg. 60649

Patent attorney

Murtha Cullina, LLP

Stamford, CT · 06901

203-653-5417

John S. White

Reg. 82067

Patent attorney

Electric Power Research Institute

Manchester, CT · 06040

860-327-2063

Leo J White

Reg. 60188

Patent attorney

P & G

Bethel, CT · 06801

203-731-6413

Wesley W Whitmyer· Jr

Reg. 33558

Patent attorney

Whitmyer IP Group LLC

Stamford, CT · 06901

203-703-0800

John A Wichtowski

Reg. 48032

Patent attorney

Pfizer INC

Groton, CT · 06340

860-715-6645

Peter F Willig

Reg. 19422

Patent attorney

Madison, CT · 06443

203-245-3539

James E Wimpe

Reg. 59990

Patent agent

Cantor Colburn LLP

Bloomfield, CT · 06002

860-286-2929

Jonathan A Winter

Reg. 70748

Patent attorney

St. Onge Steward Johnston and Reens

Stamford, CT · 06905

203-324-6155

Alfred I Wirtenberg

Reg. 29224

Patent attorney

Weston, CT · 06883

203-544-9270

Paula K Wittmayer

Reg. 53785

Patent attorney

Boehringer Ingelheim Corporation

Ridgefield, CT · 06877-0368

203-791-6692

Scott D Wofsy

Reg. 35413

Patent attorney

Edwards Wildman Palmer, LLP

Stamford, CT · 06901

203-353-6831

Michael I Wolfson

Reg. 24750

Patent attorney

Greenwich, CT · 06830

203-962-7639

Ewa M Wozniak

Reg. 77209

Patent attorney

LANXESS Corporation

Shelton, CT · 06484

203-815-6850

Allyn J Wright

Reg. 60489

Patent agent

Wright, Allyn J

New Haven, CT · 06515

917-620-7961

Jiangping Wu

Reg. 56931

Patent agent

Danbury, CT · 06810

203-826-6281

Wanli Wu

Reg. 59045

Patent attorney

Cantor Colburn LLP

Hartford, CT · 06103

860-286-2929

Ying Wu

Reg. 68928

Patent agent

Guilford, CT · 06437

203-453-4611

Jinquan Xu

Reg. 62643

Patent agent

United Technologies Corp/ Pratt and Whitney

East Hartford, CT · 06118

860-565-1343

George M Yahwak

Reg. 26824

Patent attorney

Yahwak and Assocs

Trumbull, CT · 06611

203-268-1951

Guy D Yale

Reg. 29125

Patent attorney

Alix, Yale & Ristas, LLP

Hartford, CT · 06103

860-527-9211

Michael Makoto Yamauchi

Reg. 58468

Patent attorney

Alexion Pharmaceuticals, Inc.

New Haven, CT · 06510

203-699-7334

Weiying Yang

Reg. 61637

Patent attorney

Purdue Pharma L.P.

Stamford, CT · 06901

203-588-7338

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.