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, Edison Materials Technology Center (EMTEC), and Martin and Ferraro 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

Michael C Martin

Reg. 63567

Patent agent

Edison Materials Technology Center (EMTEC)

Spring Valley, OH · 45370

937-657-9989

Thomas H Martin

Reg. 34383

Patent attorney

Martin and Ferraro LLP

Hartville, OH · 44632

330-877-0700

Melanie R Martin-Jones

Reg. 50321

Patent attorney

Porter Wright Morris and Arthur LLP

Columbus, OH · 43215

614-227-2116

Mary E Martindell

Reg. 64314

Patent attorney

M. Elizabeth Martaindell

Marion, OH · 43302

740-382-6588

Bradley T. Marzola

Reg. 75284

Patent attorney

Gahanna, OH · 43230

614-738-1739

Marie E. Mascari

Reg. 59384

Patent agent

Pataskala, OH · 43062

614-394-6125

George P Maskas

Reg. 18954

Patent attorney

Columbus, OH · 43221

614-457-6549

J Derek Mason

Reg. 35270

Patent attorney

Tucker Ellis LLP

Cleveland, OH · 44113-7213

216-696-3024

Harold I Masteller· Jr

Reg. 34665

Patent agent

Springboro, OH · 45066

937-885-7481

Joseph Masters

Reg. 35943

Patent attorney

Joseph Masters, Attorney at Law

Elyria, OH · 44035

440-322-6984

Mark J. Masterson

Reg. 71886

Patent attorney

McDonald Hopkins LLC

Cleveland, OH · 44114

216-348-5427

Vytas R Matas

Reg. 26199

Patent attorney

Pepper Pike, OH · 44124

440-473-2530

Adam F. Mathews

Reg. 69781

Patent attorney

Lebanon, OH · 45036

513-265-0925

Eileen T Mathews

Reg. 41973

Patent attorney

Eileen T. Mathews, Inc.

Westlake, OH · 44145

440-835-0900

Charles R Matson

Reg. 52006

Patent attorney

The Procter & Gamble Company

Cincinnati, OH · 45202

513-983-8579

Mutua Mattu

Reg. 65212

Patent agent

Avery Dennison

Mentor, OH · 44060

440-534-4832

James F McBride

Reg. 43784

Patent attorney

James F McBride

Cincinnati, OH · 45252

513-253-5628

Steven Daniel McCarthy

Reg. 33421

Patent attorney

Cincinnati, OH · 45247-5819

513-385-1375

Daniel J. McCartney

Reg. 66068

Patent attorney

University Heights, OH · 44118

216-392-0169

Stephen Lynn McCauley

Reg. 39764

Patent attorney

Calfee Halter and Griswold, LLP

Cleveland, OH · 44114-1607

216-622-8806

Robert J McCloskey

Reg. 22691

Patent attorney

Moreland Hills, OH · 44022

440-247-3289

Scott A McCollister

Reg. 33961

Patent attorney

Fay Sharpe LLP

Cleveland, OH · 44115

216-363-9000

Julie A McConihay

Reg. 55439

Patent attorney

Frost Brown Todd, LLC.

Cincinnati, OH · 45202

513-651-6791

Whitney D McConnell

Reg. 75898

Patent attorney

Stevens & Showalter, LLP

Dayton, OH · 45459

937-438-6848

Ryan G. McCray

Reg. 80150

Patent agent

Garfield Heights, OH · 44125

330-696-4813

Shannon V McCue

Reg. 42859

Patent attorney

CueCards Legal

Cleveland, OH · 44132

216-502-3700

Robert E McDonald

Reg. 29193

Patent attorney

The Sherwin-Williams Company

Cleveland, OH · 44115

216-566-2432

Mark W. McDougall

Reg. 62670

Patent attorney

Calfee, Halter & Griswold, LLP

Cleveland, OH · 44114

216-622-8524

Kelly L McDow

Reg. 43787

Patent attorney

The Procter & Gamble Company

Cincinnati, OH · 45202

513-983-3798

Jack C McGowan

Reg. 28358

Patent attorney

Jack C McGowan and Assocs

Hamilton, OH · 45011

513-844-2000

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.