Atty. Mark E. Stallion

Atty. Mark E. Stallion

Mark E. Stallion is a lawyer practicing technology, manufacturing & transportation, technology, aviation and 7 other areas of law.

St. Louis St. Louis 29 yrs experience 29 year
Call (314) 408-3130 Book Appointment

Aviation & More Attorney · Serving St. Louis, MO · 29+ Years Experience

Profile Summary

About Mark E. Stallion at a Glance

Mark E. Stallion is a Partner, Technology, Manufacturing & Transportation based in St. Louis, Missouri, practicing at Greensfelder, Hemker & Gale, P.C.. They have 29+ years of legal experience, licensed to practice since 1997. Their practice focuses on patent, trademark, copyright, ip, and trade secrets. Admitted to practice in Missouri U.S. Patent and Trademark Office (1997). Educated at Saint Louis University School of Law (J.D., 1997) and Georgia Institute of Technology (B.S.E.E., 1985). Serves clients in St. Louis, MO and the surrounding metropolitan area.

Verified attorney profile · Updated October 2026

About Mark E. Stallion

  • Mark E. Stallion is a lawyer practicing technology, manufacturing & transportation, technology, aviation and 7 other areas of law
  • Mark received a B.S.E.E. degree from Georgia Institute of Technology in 1985, and has been licensed for 29 years
  • Mark practices at Greensfelder, Hemker & Gale, P.C. in St. Louis, MO

Practice Areas Explained

Mark E. Stallion's Areas of Legal Practice

Each practice area below reflects the types of cases Mark E. Stallion handles, with a practical overview of what that area of law involves and how it may apply to your situation in St. Louis.

Patent Law in St. Louis

Mark E. Stallion is one of 20,632 patent attorneys indexed nationally. Browse patent attorneys in Missouri →

Trademark Law in St. Louis

Mark E. Stallion is one of 23,086 trademark attorneys indexed nationally. Browse trademark attorneys in Missouri →

Copyright Law in St. Louis

Mark E. Stallion is one of 17,404 copyright attorneys indexed nationally. Browse copyright attorneys in Missouri →

Intellectual Property in St. Louis

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

Mark E. Stallion is one of 105,285 ip attorneys indexed nationally. Browse ip attorneys in Missouri →

Trade Secrets in St. Louis

Mark E. Stallion is one of 6,604 trade secrets attorneys indexed nationally. Browse trade secrets attorneys in Missouri →

Jurisdictional Context

Why Local Counsel Matters in St. Louis

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 venue, 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.

St. Louis Courts and Legal Process

Choosing a St. Louis-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.

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

Frequently Asked

Common Questions About Mark E. Stallion

Where is Mark E. Stallion's law office located?
Mark E. Stallion's law practice is located in St. Louis, Missouri. The firm is Greensfelder, Hemker & Gale, P.C.. You can contact the office directly through this profile page.
What practice areas does Mark E. Stallion handle?
Mark E. Stallion focuses on patent, trademark, copyright, ip, trade secrets. Each practice area listed reflects experience handling cases of that type in Missouri.
How long has Mark E. Stallion practiced law?
Mark E. Stallion has 29+ years of legal experience and has been licensed since 1997.
Where did Mark E. Stallion go to law school?
Mark E. Stallion earned their education at (J.D., 1997); (B.S.E.E., 1985).
How can I contact Mark E. Stallion for a consultation?
You can contact Mark E. Stallion 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.

Professional Profile

Why Clients in St. Louis Choose Mark E. Stallion

Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish Mark E. Stallion's practice in the field of patent, trademark, copyright, ip, and trade secrets.

Decade-Tested Legal Experience

Mark E. Stallion brings 29+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.

Broad Practice Area Coverage

Covering patent, trademark, and copyright, Mark E. Stallion can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.

Local Presence in St. Louis

A St. Louis-based practice means Mark E. Stallion attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.

Case Types

Common Legal Issues Mark E. Stallion Handles in St. Louis

Below is a representative sample of the types of matters Mark E. Stallion has experience with under Missouri law. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.

Trademark registration
IP
Copyright infringement defense
IP
Patent prosecution
IP
Trade secret protection
IP

This list is illustrative, not exhaustive. Contact Mark E. Stallion directly to discuss the specifics of your situation.

Search Reference

How People Find Mark E. Stallion Online

Prospective clients searching for legal help in St. Louis commonly use a combination of the attorney's name and their specific legal need. The following search terms frequently lead people to this profile and to attorneys like Mark E. Stallion.

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If any of the above matches what you searched for, you've found the right profile. Use the contact options at the top of this page to get in touch with Mark E. Stallion directly.

Education & Law School Background

J.D.
Saint Louis University School of Law
- 1997
B.S.E.E.
Georgia Institute of Technology
- 1985

Bar Admissions & Licensed Jurisdictions

Missouri U.S. Patent and Trademark Office
Admitted: 1997

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