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 InterDigital Holdings, Inc., The Chemours Company FC, LLC, and Rogowski Law LLC.

Top cities in Delaware

All practitioners in Delaware

Thomas Michael Rizzo

Reg. 41272

Patent attorney

Newark, DE · 19711-5936

610-497-4491

Patricia Smink Rogowski

Reg. 33791

Patent attorney

Rogowski Law LLC

Wilmington, DE · 19809

302-893-0048

Irene T Rombel

Reg. 54407

Patent agent

Biomedical Intelligence, LLC

Hockessin, DE · 19707

302-239-5967

Joanne Mary Fobare Rossi

Reg. 43061

Patent attorney

Solenis Technologies, L.P.

Wilmington, DE · 19803

302-502-0808

Jeffrey T. Russell

Reg. 61630

Patent agent

InterDigital Holdings, Inc.

Wilmington, DE · 19809-3727

302-281-3656

Peter Thomas Rutkowski

Reg. 32627

Patent attorney

Peter T. Rutkowski, Esq.

Middletown, DE · 19709

214-289-0120

John Paul Ryan

Reg. 52186

Patent agent

Encadria Staffing Solutions

WILMINGTON, DE · 19808

302-683-3317

Helena C Rychlicki

Reg. 48179

Patent attorney

Pinckney, Weidinger, Urban & Joyce LLC

Greenville, DE · 19807

302-504-1497

Jeffrey B Safran

Reg. 54689

Patent attorney

McCarter & English, LLP

Wilmington, DE · 19801

302-984-6357

Kathryn Mary Sanchez

Reg. 43081

Patent agent

The Chemours Company

Wilmington, DE · 19801

302-773-0078

Julian Francis Santos

Reg. 47917

Patent attorney

InterDigital Holdings, Inc.

Wilmington, DE · 19809

302-281-3665

F. Sima Sariaslani

Reg. 62253

Patent agent

Dupont Central Research

Wilmington, DE · 19880

302-695-7425

Linda K H Sauerbrunn

Reg. 41291

Patent agent

Wilmington, DE · 19810

302-540-0731

George Neil Sausen

Reg. 26992

Patent agent

Hockessin, DE · 19707-1523

302-234-4791

Jerome G Schaefer

Reg. 50800

Patent attorney

InterDigital

Wilmington, DE · 19809

609-436-9560

Patricia Anne Schreck

Reg. 33777

Patent attorney

Wayne, DE · 19087

484-802-9866

Claudia Schultze

Reg. 60016

Patent attorney

Faegre Drinker Biddle & Reath LLP

Wilmington, DE · 19801

302-467-4200

Bridget Catherine Sciamanna

Reg. 47333

Patent attorney

INVISTA

Wilmington, DE · 19808

302-683-3137

Patricia Marie Scott

Reg. 33068

Patent attorney

The Chemours Company FC, LLC

Wilmington, DE · 19899

302-773-2285

Robert Steven Scott

Reg. 53572

Patent agent

The Chemours Company FC, LLC

Wilmington, DE · 19801

302-383-0125

Yin Shao

Reg. 72935

Patent agent

InterDigital Holdings, Inc.

Wilmington, DE · 19809

202-349-1715

Jason Mitchell Shapiro

Reg. 35354

Patent attorney

Devlin Law Firm LLC

Wilmington, DE · 19806

302-449-9010

John W Shaw

Reg. 40809

Patent attorney

Shaw Keller LLP

Wilmington, DE · 19899

302-298-0700

Ellen R Sherin

Reg. 68172

Patent agent

DuPont

Wilmington, DE · 19805

302-999-5963

Andrew J. Sherman

Reg. 74042

Patent attorney

Devlin Law Firm

Wilmington, DE · 19806

302-449-9010

Barbara Carrol Siegell

Reg. 30684

Patent attorney

Wilmington, DE · 19810

302-478-3397

Faith L K Silver

Reg. 27720

Patent agent

E I Du Pont de Nemours and Company

Wilmington, DE · 19805

302-999-2457

Alan R. Silverstein

Reg. 67463

Patent attorney

Potter Anderson & Corroon LLP

Wilmington, DE · 19899-0951

302-984-6000

John D Simmons

Reg. 52225

Patent attorney

Panitch Schwarze Belisario & Nadel LLP

Wilmington, DE · 19803

302-394-6001

Jessica Michelle Sinnott

Reg. 34015

Patent attorney

DuPont Specialty Products USA LLC

Wilmington, DE · 19805

302-545-3218

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.