Texas

Patent attorneys in Texas

Texas hosts 4,046 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 Texas. 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 McKool Smith, Barton, East & Caldwell, P.L.L.C., and The Caldwell Firm, LLC.

Top cities in Texas

Houston1195 Dallas735 Austin730 Plano169 San Antonio113 Fort Worth70 Sugar Land56 Richardson47 Irving43 The Woodlands41 Spring40 Frisco31 Georgetown23 Cedar Park22 Arlington21 McKinney21 Allen21 Cypress20 Katy20 Waco20

All practitioners in Texas

Matthew D. Cain

Reg. 79040

Patent agent

sachse, TX · 75048

469-734-8943

Ryan W Cairns

Reg. 82707

Patent attorney

Dallas, TX · 75252

860-213-3005

Guy W Caldwell

Reg. 32090

Patent attorney

Barton, East & Caldwell, P.L.L.C.

San Antonio, TX · 78205

210-228-3617

Patrick E Caldwell

Reg. 44580

Patent attorney

The Caldwell Firm, LLC

Dallas, TX · 75229-0655

214-734-2313

Rodney K Caldwell

Reg. 26152

Patent attorney

Pirkey Barber PLLC

Austin, TX · 78702

512-322-5200

Jeffrey P Calfa

Reg. 37105

Patent attorney

Jeffrey Calfa

San Antonio, TX · 78210

630-310-4758

Nathan H Calvert

Reg. 48990

Patent attorney

The Culbertson Group, PC

Austin, TX · 78716

512-327-8932

Anthony Randall Camacho

Reg. 46595

Patent attorney

ARC LAW FIRM, PLLC

North Richland Hills, TX · 76182

817-846-1075

Dianne Celestino Camarillo

Reg. 903241

Limited recognition

South Texas College of Law Houston

Houston, TX · 77002

832-704-3191

Jason Christopher Cameron

Reg. 74396

Patent attorney

JCameron IP Law Firm LLC

Cypress, TX · 77429

616-916-7775

Jeffrey M. Cameron

Reg. 76756

Patent agent

McKinney, TX · 75070

214-532-9880

Kyrie K Cameron

Reg. 77380

Patent attorney

Patterson & Sheridan, LLP

Houston, TX · 77046

713-623-4844

Matthew T Cameron

Reg. 74179

Patent attorney

McKool Smith

Austin, TX · 78701

770-561-2564

Michael G Cameron

Reg. 50298

Patent attorney

McKinney, TX · 75070

214-532-9857

Decker A Cammack

Reg. 48486

Patent attorney

Whitaker Chalk Swindle & Schwartz PLLC

Fort Worth, TX · 76102

817-878-0578

Mark V Campagna

Reg. 42380

Patent attorney

Norton Rose Fulbright

Austin, TX · 78701

404-803-1482

Pierre H D Campanac

Reg. 70093

Patent agent

Porter Hedges LLP

Houston, TX · 77002

713-226-6761

Darrian L Campbell

Reg. 70769

Patent attorney

Baker & McKenzie LLP

Dallas, TX · 75201

214-965-7080

John B Campbell· Jr

Reg. 54665

Patent attorney

McKool Smith

Austin, TX · 78701

512-692-8730

Matthew T Campbell

Reg. 73732

Patent agent

Houston, TX · 77010

703-336-2166

Samuel G Campbell· III

Reg. 42381

Patent attorney

Campbell Stephenson LLP

Cedar Park, TX · 78613

512-439-5084

Trent E Campione

Reg. 46598

Patent attorney

Austin, TX · 78701

512-810-0025

Catherine J. Canby

Reg. 81642

Patent attorney

Austin, TX · 78703

512-431-9700

Bryan M Candelario

Reg. 73689

Patent attorney

Henry Patent Law Firm PLLC

Dallas, TX · 75206

972-497-2029

Michael Rocco Cannatti

Reg. 34791

Patent attorney

Terrile, Cannatti, Chambers & Holland, LLP

Austin, TX · 78759

512-338-9100

Bruce J. Cannon

Reg. 59557

Patent attorney

Sutton McAughan Deaver PLLC

Houston, TX · 77056

713-800-5700

Jesus E Cano

Reg. 76182

Patent attorney

Patterson + Sheridan, LLP

Houston, TX · 77046

713-623-4844

Alejandro J. Cantu

Reg. 901411

Limited recognition

Southern Methodist University Dedman School of Law

Dallas, TX · 75275-0116

817-966-2635

Miguel A Cantu

Reg. 48471

Patent agent

Simon Galasso and Frantz PLC

Austin, TX · 78755

512-476-7565

Richard Cantu

Reg. 52692

Patent attorney

San Antonio, TX · 78205

210-825-3400

Common questions

Do I need a patent attorney based in Texas?

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 Texas-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 Texas?

4,046 active USPTO-registered patent practitioners list a Texas 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.