Missouri

Patent attorneys in Missouri

Missouri hosts 666 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 Missouri. 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 Stinson Leonard Street LLP, Jones Walker LLP, and Senniger Powers LLP.

Top cities in Missouri

All practitioners in Missouri

Steven T Kazmierski

Reg. 64898

Patent attorney

Stinson Leonard Street LLP

Saint Louis, MO · 63105

314-863-0800

James A Kearns

Reg. 55320

Patent attorney

Jones Walker LLP

St. Louis, MO · 63119

314-705-2680

Vincent Matthew Keil

Reg. 36838

Patent attorney

Senniger Powers LLP

St Louis, MO · 63102

314-345-7000

Teneil L Kellerman

Reg. 53105

Patent attorney

Kellerman Law, LLC

St. Louis, MO · 63105

314-333-4025

Don V Kelly

Reg. 55323

Patent attorney

University of Missouri System

Columbia, MO · 65211

573-882-3211

John Michael Kelly

Reg. 33920

Patent attorney

John M Kelly, Esq

Braymer, MO · 64624

660-530-7285

Patrick D Kelly

Reg. 30650

Patent attorney

St Louis, MO · 63131

314-822-8558

John William Kepler· III

Reg. 30397

Patent attorney

St Louis, MO · 63132

314-791-0191

Nicholas A. Keppel

Reg. 64979

Patent attorney

Armstrong Teasdale LLP

St. Louis, MO · 63105

314-621-5070

Kevin Max Kercher

Reg. 33408

Patent attorney

Webster Groves, MO · 63119

314-850-8006

Eric W. Kerschen

Reg. 81222

Patent attorney

Husch Blackwell LLP

Kansas City, MO · 64112

816-983-8321

David S. Kim

Reg. 64609

Patent attorney

Stinson Leonard Street LLP

St Louis, MO · 63105

314-863-0800

Joshua Kim

Reg. 73435

Patent attorney

Harness, Dickey & Pierce, PLC

Clayton, MO · 63105

314-446-7638

Anthony R Kinney

Reg. 44834

Patent attorney

Mallinckrodt Pharmaceuticals

Hazelwood, MO · 63042

314-654-3846

Jay K Klahs

Reg. 60919

Patent attorney

Hillsboro, MO · 63050

636-475-7494

Brian P Klein

Reg. 44837

Patent attorney

Fast Forward Law LLC

St. Louis, MO · 63131

314-858-9500

Roy Joseph Klostermann

Reg. 25349

Patent attorney

Chesterfield, MO · 63017

636-532-2404

Daniel S Klotzer

Reg. 42745

Patent agent

Klotzer Patents

Saint Louis, MO · 63108

314-616-7111

Kevin Lynn Klug

Reg. 38756

Patent attorney

The Klug Law Firm

St Louis, MO · 63123

314-849-2273

Lana M Knedlik

Reg. 42748

Patent attorney

The Curators of the University of Missouri

Columbia, MO · 65211

573-882-3211

Erin D. Knese

Reg. 73414

Patent attorney

c/o G Knese

St. Louis, MO · 63130

205-336-2383

Peter Charles Knops

Reg. 37659

Patent attorney

Shook, Hardy & Bacon LLP

Kansas City, MO · 64108

816-474-6550

Ellen M. Komlos

Reg. 79723

Patent attorney

Bryan Cave Leighton Paisner LLP

St. Louis, MO · 63102

314-259-2354

David A. Koonce

Reg. 72315

Patent attorney

St. Louis, MO · 63101

314-736-2287

Elisabeth A. Koral

Reg. 67022

Patent attorney

Harness, Dickey & Pierce, P.L.C.

St. Louis, MO · 63105

314-726-7500

Thomas M Krenning

Reg. 73742

Patent agent

St. Louis, MO · 63131

314-809-9819

Allison N Krepel

Reg. 73649

Patent attorney

Polsinelli, PC

St. Louis, MO · 63105

314-889-8000

Timothy D. Krieger

Reg. 61808

Patent attorney

Foley & Marsfield

St. Louis, MO · 63105

314-925-5700

Stephen S. Krogmeier

Reg. 71884

Patent agent

Kansas City, MO · 64108

636-734-9210

Patrick D Kuehl· Jr.

Reg. 59440

Patent attorney

Husch Blackwell Sanders LLP

Kansas City, MO · 64112

816-983-8000

Common questions

Do I need a patent attorney based in Missouri?

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 Missouri-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 Missouri?

666 active USPTO-registered patent practitioners list a Missouri 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.