Atty. Patrick Edward Brennan

Atty. Patrick Edward Brennan

Patrick Edward Brennan is a lawyer practicing intellectual property services, intellectual property. Patrick received a B.S. degree from University of Missouri - Rolla in 1993, and has been licensed for 23 years.

St. Louis St. Louis 23 yrs experience 23 year
Call (309) 718-8598 Book Appointment

Profile Summary

About Patrick Edward Brennan at a glance

Patrick Edward Brennan is a Partner based in St. Louis, Missouri, practicing at Armstrong Teasdale LLP. They have 23+ years of legal experience, licensed to practice since 2003. Their practice focuses on ip. Admitted to practice in Missouri registered to practice before U.S. Patent and Trademark Office (2003). Educated at Saint Louis University School of Law (J.D., 2002) and University of Missouri - Rolla (B.S. Geological, 1993). Active member of Bar Association of Metropolitan St and Louis The Missouri Bar. Serands clients in St. Louis, MO and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Patrick Edward Brennan is a lawyer practicing intellectual property services, intellectual property
  • Patrick received a B.S. degree from University of Missouri - Rolla in 1993, and has been licensed for 23 years
  • Patrick practices at Armstrong Teasdale LLP in St. Louis, MO

Practice Areas Explained

Patrick Edward Brennan's Areas of Practice

Each practice area below reflects the types of cases Patrick Edward Brennan handles, with a brief overview of what that area of law covers.

Intellectual Property

IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.

Patrick Edward Brennan is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in Missouri →

Jurisdictional Context

Why local counsel matters in Missouri

Practicing law in Missouri. Legal matters in Missouri are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in St. Louis are typically filed in the local municipal court or the appropriate Missouri state district court, depending on subject matter and amount in controversy. An attorney licensed in Missouri brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Missouri courts without local counsel or pro hac vice admission.

Looking for additional Missouri attorneys? Browse all attorneys in St. Louis or all attorneys in Missouri.

Frequently Asked

Common questions about Patrick Edward Brennan

Where is Patrick Edward Brennan's law office located?
Patrick Edward Brennan's law practice is located in St. Louis, Missouri. The firm is Armstrong Teasdale LLP. You can contact the office directly through this profile page.
What practice areas does Patrick Edward Brennan handle?
Patrick Edward Brennan focuses on ip. Each practice area listed reflects experience handling cases of that type in Missouri.
How long has Patrick Edward Brennan practiced law?
Patrick Edward Brennan has 23+ years of legal experience and has been licensed since 2003.
Where did Patrick Edward Brennan go to law school?
Patrick Edward Brennan earned their education at (J.D., 2002); (B.S. Geological, 1993).
How can I contact Patrick Edward Brennan for a consultation?
You can contact Patrick Edward Brennan directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Education

J.D.
Saint Louis University School of Law
- 2002
B.S. Geological
University of Missouri - Rolla
- 1993

Bar Admissions

Missouri registered to practice before U.S. Patent and Trademark Office
Admitted: 2003

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