Delaware

Patent attorneys in Delaware

Delaware hosts 324 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 Delaware. 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 Devlin Law Firm LLC, E.I, Dupont de Nemours, and TE Connectivity.

Top cities in Delaware

All practitioners in Delaware

Richard J Brown

Reg. 66414

Patent agent

E.I, Dupont de Nemours

Wilmington, DE · 19880-323

302-695-2217

David Alan Bryan

Reg. 56305

Patent agent

Lewes, DE · 19958

302-291-2708

Evan M Bundis

Reg. 46587

Patent attorney

TE Connectivity

Wilmington, DE · 19808

302-633-2771

Cenk R Burgazli

Reg. 54013

Patent attorney

Innospec Inc.

Newark, DE · 19702

302-451-1350

Gordon C. Campbell· Jr.

Reg. 72624

Patent agent

DuPont Legal

Wilmington, DE · 19805

302-999-4218

Paul Carango

Reg. 42386

Patent attorney

Incyte Corporation

Wilmington, DE · 19803

302-274-4987

Katherine L Carleton

Reg. 35692

Patent attorney

W.L. Gore & Associates, Inc.

Newark, DE · 19711

928-864-4500

Chiara M Carni

Reg. 82607

Patent attorney

Devlin Law Firm LLC

Wilmington, DE · 19806

302-449-9010

Barry Dale Cash

Reg. 35476

Patent attorney

Wilmington, DE · 19803

302-478-2437

Jeffrey T Castellano

Reg. 61424

Patent attorney

DLA Piper LLP

Wilmington, DE · 19801

302-468-5671

Christina M. Catalano

Reg. 66478

Patent agent

E. I. Du Pont de Nemours and Company

Wilmington, DE · 19805

302-999-3918

Alex H Chan

Reg. 52713

Patent attorney

Devlin Law Firm LLC

Wilmington, DE · 19806

302-449-9010

Kyle S. Chapin

Reg. 73863

Patent attorney

Buddi, Ltd.

Wilmington, DE · 19808

727-510-8022

Shaorong Chen

Reg. 55054

Patent attorney

DuPont

Wilmington, DE · 19805

302-999-3877

Zunxuan Chen

Reg. 55056

Patent attorney

Foresee Pharmaceuticals USA Inc.

Newark, DE · 19711

302-366-1785

Dennis R Chesire

Reg. 57452

Patent agent

IFF

Wilmington, DE · 19803

302-999-2402

Lynne M Christenbury

Reg. 30971

Patent attorney

E I Du Pont de Nemours and Company

Wilmington, DE · 19805

302-999-6337

Dawn S Clark

Reg. 42420

Patent agent

E. I. DuPont de Nemous and Company

Wilmington, DE · 19805

302-992-3980

Scott A Clark

Reg. 60425

Patent attorney

InterDigital Holdings, Inc.

Wilmington, DE · 19809-3727

302-281-3646

Reed A. Coats

Reg. 65153

Patent agent

FMC Corporation

Newark, DE · 19711

302-318-9778

Bruce Maier Collins

Reg. 20066

Patent attorney

Lewes, DE · 19958

302-360-8565

Jeffrey M Connor

Reg. 57409

Patent attorney

Qnity Electronics, Inc.

Wilmington, DE · 19805

302-575-7340

Jeffrey Francis Craft

Reg. 30044

Patent attorney

Rehoboth Beach, DE · 19971

818-274-7223

Paul E Crawford

Reg. 24397

Patent attorney

Wilmington, DE · 19806

302-655-2786

Christopher J Cronin

Reg. 46513

Patent attorney

MIDDLETOWN, DE · 19709

302-437-4239

Evan A. Davey

Reg. 74627

Patent agent

Fish & Richardson, P.C.

Wilmington, DE · 19899

302-778-8457

Kelly A. Del Dotto

Reg. 74120

Patent attorney

Fish & Richardson

Wilmington, DE · 19899

302-652-5070

Timothy Devlin

Reg. 41706

Patent attorney

Devlin Law Firm LLC

Wilmington, DE · 19806

302-449-9011

Liliana Di Nola-Baron

Reg. 56073

Patent attorney

Panitch Schwarze Belisario & Nadel

Wilmington, DE · 19803

215-965-1388

Francis DiGiovanni

Reg. 37310

Patent attorney

Drinker Biddle & Reath LLP

Wilmington, DE · 19801

302-467-4200

Common questions

Do I need a patent attorney based in Delaware?

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 Delaware-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 Delaware?

324 active USPTO-registered patent practitioners list a Delaware 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.