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Missouri

Patent attorneys in Missouri

Missouri hosts 670 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 POLSINELLI PC, Shook, Hardy & Bacon, and Sandberg, Phoenix & von Gontard, P.C..

Top cities in Missouri

St. Louis220Kansas City146Saint Louis71Chesterfield41St Louis41Columbia17Clayton8Hazelwood7Springfield6Jefferson City5Wildwood5O'Fallon5Carthage4Rolla4Brentwood4Town & Country3Kirkwood3St. Peters3Manchester3Lee's Summit3

All practitioners in Missouri

Jeffrey A Young

Reg. 56476
Patent agent

Shook, Hardy & Bacon

Kansas City, MO · 64108

816-474-6550

Saul L Zackson

Reg. 52391
Patent attorney

Sandberg, Phoenix & von Gontard, P.C.

Clayton, MO · 63105

314-425-4916

Clayton R. Zak

Reg. 72156
Patent attorney

Thompson Coburn LLP

St. Louis, MO · 63101

314-552-6293

Paul E Zarek

Reg. 75190
Patent agent

POLSINELLI PC

St. Louis, MO · 63105

314-889-8000

Michael E. Zawalski

Reg. 82044
Patent attorney

POLSINELLI PC

St. Louis, MO · 63105

314-889-8000

Brendan R. Zee-Cheng

Reg. 75209
Patent attorney

Husch Blackwell LLP

St. Louis, MO · 63105

314-480-1500

Karen M Zelle

Reg. 67555
Patent attorney

Polsinelli PC

St. Louis, MO · 63102

314-552-6894

Xiaoming Zhang

Reg. 71332
Patent agent

Bill & Melinda Gates Agricultural Innovations

St Louis, MO · 63108

314-452-5668

Daniel Z. Zima

Reg. 79438
Patent attorney

Franke Schultz & Mullen, P.C.

Kansas City, MO · 64114

913-991-0504

Jessica J Zolynas

Reg. 58015
Patent attorney

MRIGlobal

Kansas City, MO · 64110

816-326-5934

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?
670 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.
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