New York

Patent attorneys in New York

New York hosts 3,856 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 New York. 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 The Davidoff Law Firm, GE Global Research, and Katsougrakis Law Firm, P.C..

Top cities in New York

All practitioners in New York

Catherine Lara Kassenoff

Reg. 45804

Patent attorney

The Davidoff Law Firm

New York, NY · 10017

917-836-5200

Russell Robert Kassner

Reg. 36183

Patent attorney

Riverhead, NY · 11901

631-765-8633

Seema S Katragadda

Reg. 65895

Patent agent

GE Global Research

Niskayuna, NY · 12309

518-387-4443

John Katsougrakis

Reg. 57118

Patent attorney

Katsougrakis Law Firm, P.C.

Woodbury, NY · 11797

516-750-0597

Pranav L Katti

Reg. 78713

Patent attorney

Barclay Damon LLP

Syracuse, NY · 13202

315-877-3110

Arthur A Katz

Reg. 24124

Patent attorney

Otterbourg, Steindler, Houston & Rosen, PC

New York, NY · 10169

212-661-9100

Robert David Katz

Reg. 30141

Patent attorney

Law Offices of Albert Wai-Kit Chan, PLLC.

Whitestone, NY · 11357

718-799-1000

Ivan S Kavrukov

Reg. 25161

Patent attorney

Cooper & Dunham LLP

New York, NY · 10112

212-278-0400

Joshua M Kay

Reg. 66855

Patent attorney

FactSet Research Systems, Inc.

New York, NY · 10016

212-476-4300

Daniel P. Kearney

Reg. 64643

Patent attorney

Orrick Herrington & Sutcliffe LLP

New York, NY · 10019-6142

212-506-5304

Thomas T Keating

Reg. 53104

Patent attorney

Thomas T. Keating Esq.

Dobbs Ferry, NY · 10522

914-325-0954

Frank J Keegan

Reg. 50145

Patent attorney

Philips Intellectual Property & Standards

Valhalla, NY · 10595

914-495-9524

Robert D Keeler

Reg. 70546

Patent attorney

Ice Miller LLP

New York, NY · 10036

212-824-4961

Thomas E Keely

Reg. 67138

Patent attorney

Carter, DeLuca, Farrell & Schmidt, LLP

Melville, NY · 11747

631-501-5700

Michael J Keenan

Reg. 68771

Patent attorney

Binghamton, NY · 13903

607-761-3793

Christopher A Keisner

Reg. 62837

Patent attorney

Davis & Gilbert LLP

New York, NY · 10019

212-468-4845

Sean L Kelleher

Reg. 54212

Patent attorney

Kelleher Patent Law

Orchard Park, NY · 14127

914-214-5514

Matthew E. Keller

Reg. 83442

Patent agent

Sunnyside, NY · 11104

551-206-0953

Alan S Kellman

Reg. 46822

Patent attorney

Kirkland and Ellis

New York, NY · 10022

212-446-4800

Alison Randolph Kelly

Reg. 44821

Patent attorney

Malverne, NY · 11565

516-887-1049

David M Kelly

Reg. 67916

Patent attorney

Fitzpatrick, Cella, Harper & Scinto

New York, NY · 10104

212-218-2100

Kelsie Lorene Kelly

Reg. 77389

Patent agent

Brooklyn, NY · 11201

210-218-0917

L. Jeffrey Kelly

Reg. 65321

Patent attorney

International Business Machines

Hopewell Junction, NY · 12533

845-592-6124

Matthew S. Kelly

Reg. 83646

Patent agent

Haug Partners LLP

New York, NY · 10151

212-588-0800

Robert Augustin Kelly

Reg. 34359

Patent attorney

Kelly and Hulme PC

Westhampton Beach, NY · 11978

516-288-2876

Todd T Kelly

Reg. 66277

Patent attorney

New York, NY · 10016

978-502-4860

Craig S Kenesky

Reg. 65256

Patent attorney

Wilson Sonsini Goodrich & Rosati, PC

New York, NY · 10019

212-497-7767

Natalie Carol Kennedy

Reg. 68511

Patent attorney

Weil, Gotshal & Manges LLP

New York, NY · 10153

212-310-8227

John C Kennel

Reg. 48562

Patent attorney

Kyndryl, Inc

New York, NY · 10017

512-286-9876

Michael Patrick Kenney

Reg. 42718

Patent attorney

Happify Inc.

New York, NY · 10003

212-261-6933

Common questions

Do I need a patent attorney based in New York?

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 New York-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 New York?

3,856 active USPTO-registered patent practitioners list a New York 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.