Ohio

Patent attorneys in Ohio

Ohio hosts 1,500 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 Ohio. 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 Procter & Gamble Company, Calfee, Halter & Griswold LLP, and Calfee Halter & Griswold, LLP.

Top cities in Ohio

Cleveland322 Cincinnati277 Columbus99 Akron84 Dayton58 Toledo43 Dublin26 Canton19 Beachwood19 Westlake17 Mentor17 Mason15 Loveland12 North Olmsted12 Medina12 Perrysburg11 Tiffin11 Hinckley10 Willoughby10 Wickliffe10

All practitioners in Ohio

Georgia K E Yanchar

Reg. 76151

Patent attorney

Calfee Halter & Griswold, LLP

Cleveland, OH · 44114

216-622-8233

Donald S. Yeager

Reg. 78150

Patent agent

Loveland, OH · 45140

513-256-8316

Jerry J Yetter

Reg. 26598

Patent attorney

J. Yetter, Attorney at Law

Cincinnati, OH · 45239

513-741-8516

Norman Sang Yi

Reg. 58268

Patent attorney

Nestle USA

Solon, OH · 44139

330-323-6499

John Andrew Yirga

Reg. 56480

Patent attorney

WATTS LAW LLC

Cleveland, OH · 44113

216-877-0300

Gregory M. York

Reg. 57533

Patent attorney

Eventide Law LLC

Cleveland, OH · 44113

216-435-3260

Olen L York· III

Reg. 53814

Patent attorney

York Law, LLC

Proctorville, OH · 45669

740-414-3975

Joshua D. Young

Reg. 75431

Patent attorney

Ethicon

Cincinnati, OH · 45242

513-337-7284

Wallace Howard Young

Reg. 50336

Patent attorney

Cincinnati, OH · 45242

513-793-5150

Joan E Yurko

Reg. 61460

Patent agent

Maumee, OH · 43537

616-405-2660

John Zabilski

Reg. 59626

Patent agent

CAS

Columbus, OH · 43210

614-447-3600

Cherian Zachariah

Reg. 65104

Patent agent

Holland, OH · 43528

567-742-7374

Jeffrey N. Zahn

Reg. 54864

Patent attorney

Lippes Mathias LLP

Cleveland, OH · 44115

216-538-1330

Thaddeus Arthur Zalenski

Reg. 22926

Patent attorney

Pearne & Gordon LLP

Cleveland, OH · 44114

216-579-1700

John S Zanghi

Reg. 48843

Patent attorney

Fay Sharpe LLP

Cleveland, OH · 44115

216-363-9000

Scott A Zare

Reg. 62508

Patent attorney

Scale LLP

Sylvania, OH · 43560

415-735-5933

Ryan J. Zawada

Reg. 79355

Patent attorney

Northwood, OH · 43619

330-635-5212

Betty J Zea

Reg. 36069

Patent attorney

The Procter & Gamble Company

Cincinnati, OH · 45202

513-983-5737

Kim William Zerby

Reg. 32323

Patent attorney

The Procter & Gamble Company

Cincinnati, OH · 45202

513-983-4555

Tiffany M Zerby

Reg. 69824

Patent attorney

The Procter & Gamble Co.

Cincinnati, OH · 45202

513-983-6845

Ningjiao Zhang

Reg. 80307

Patent attorney

Eschweiler & Potashnik, LLC

Akron, OH · 44308

216-502-0600

Tianyue Zhang

Reg. L1398

Limited recognition

Calfee, Halter & Griswold LLP

Cleveland, OH · 44114

216-622-8276

Yannan Zhang

Reg. 800122

Limited recognition

Calfee, Halter & Griswold LLP

Cleveland, OH · 44114

216-622-8825

William A Ziehler

Reg. 61415

Patent attorney

Fraser Clemens Martin & Miller LLC

Perrysburg, OH · 43551

419-874-1100

Gregory P Zillman

Reg. 74606

Patent attorney

Dayton, OH · 45429

513-304-5184

Marisa J Zink

Reg. 48064

Patent attorney

Buckingham, Doolittle & Burroughs, LLP

Akron, OH · 44333

330-258-6405

Fred H Zollinger· III

Reg. 39438

Patent attorney

Law Office of Fred H. Zollinger III, LLC

North Canton, OH · 44720

133-036-10139

John G Zolton

Reg. 80929

Patent agent

Tallmadge, OH · 44278

330-604-5094

Steven J Zondag

Reg. 80672

Patent agent

Sunbury, OH · 43074

614-795-6756

Ari G Zytcer

Reg. 57474

Patent attorney

Hyperion Materials & Technologies

Columbus, OH · 43229

614-438-2000

Common questions

Do I need a patent attorney based in Ohio?

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 Ohio-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 Ohio?

1,500 active USPTO-registered patent practitioners list a Ohio 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.