Atty. Jeffrey A. Masson

Atty. Jeffrey A. Masson

Jeffrey A. Masson is a lawyer practicing employment / labor, life sciences / biotechnology, agricultural law and 3 other areas of law.

St. Louis St. Louis 23 yrs experience 23 year
Call (314) 396-5042 Book Appointment

Profile Summary

About Jeffrey A. Masson at a glance

Jeffrey A. Masson is a Partner based in St. Louis, Missouri, practicing at Thompson Coburn LLP. They have 23+ years of legal experience, licensed to practice since 2003. Their practice focuses on employment, ip, product liability, and agriculture. Admitted to practice in Louisiana (2003), Missouri U.S. Court of Appeals, Fifth Circuit U.S. Court of Appeals, Federal Circuit U.S. District C (2009), and Illinois (2018). Educated at Southern University (J.D., 2003) and Louisiana State University (B.S. Plant, 1998). Serands clients in St. Louis, MO and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Jeffrey A. Masson is a lawyer practicing employment / labor, life sciences / biotechnology, agricultural law and 3 other areas of law
  • Jeffrey received a B.S. degree from Louisiana State University in 1998, and has been licensed for 23 years
  • Jeffrey practices at Thompson Coburn LLP in St. Louis, MO

Practice Areas Explained

Jeffrey A. Masson's Areas of Practice

Each practice area below reflects the types of cases Jeffrey A. Masson handles, with a brief overview of what that area of law covers.

Employment Law

Employment lawyers represent workers in wrongful termination, discrimination, harassment, wage & hour disputes, and severance negotiations.

Jeffrey A. Masson is one of 169,120 employment attorneys indexed nationally. Browse employment attorneys in Missouri →

Intellectual Property

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

Jeffrey A. Masson is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in Missouri →

Product Liability

Jeffrey A. Masson is one of 66,193 product liability attorneys indexed nationally. Browse product liability attorneys in Missouri →

Agricultural Law

Agriculture attorneys for farm operations, ag finance, land use, water rights, and agribusiness.

Jeffrey A. Masson is one of 4,793 agriculture attorneys indexed nationally. Browse agriculture 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 Jeffrey A. Masson

Where is Jeffrey A. Masson's law office located?
Jeffrey A. Masson's law practice is located in St. Louis, Missouri. The firm is Thompson Coburn LLP. You can contact the office directly through this profile page.
What practice areas does Jeffrey A. Masson handle?
Jeffrey A. Masson focuses on employment, ip, product liability, agriculture. Each practice area listed reflects experience handling cases of that type in Missouri.
How long has Jeffrey A. Masson practiced law?
Jeffrey A. Masson has 23+ years of legal experience and has been licensed since 2003.
Where did Jeffrey A. Masson go to law school?
Jeffrey A. Masson earned their education at (J.D., 2003); (B.S. Plant, 1998).
How can I contact Jeffrey A. Masson for a consultation?
You can contact Jeffrey A. Masson 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.
Southern University
- 2003
B.S. Plant
Louisiana State University
- 1998

Bar Admissions

Louisiana
Admitted: 2003
Missouri U.S. Court of Appeals, Fifth Circuit U.S. Court of Appeals, Federal Circuit U.S. District C
Admitted: 2009
Illinois
Admitted: 2018

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