Atty. John Marshall

Atty. John Marshall

John Marshall is a lawyer practicing litigation/defense, litigation/plaintiff, mediation and 4 other areas of law. John has been licensed for 44 years.

Rockville Rockville 44 yrs experience 44 year
Call (301) 263-3027 Book Appointment

Litigation Defense & More Attorney · Serving Rockville, MD · 44+ Years Experience

Profile Summary

About John Marshall at a Glance

John Marshall is a Member based in Rockville, Maryland, practicing at Mulhern, Patterson and Marshall, LLP. They have 44+ years of legal experience, licensed to practice since 1982. Their practice focuses on personal injury, criminal defense, business, poa, and litigation. Admitted to practice in Maryland (1982) and District of Columbia (1983). Educated at American University J.D. (—). Recognitions include AV Preeminent. Serves clients in Rockville, MD and the surrounding metropolitan area.

Verified attorney profile · Updated October 2026

About John Marshall

  • John Marshall is a lawyer practicing litigation/defense, litigation/plaintiff, mediation and 4 other areas of law
  • John has been licensed for 44 years
  • John practices at Mulhern, Patterson and Marshall, LLP in Rockville, MD

Practice Areas Explained

John Marshall's Areas of Legal Practice

Each practice area below reflects the types of cases John Marshall handles, with a practical overview of what that area of law involves and how it may apply to your situation in Rockville.

Personal Injury in Rockville

Personal injury attorneys help accident victims recover compensation for medical bills, lost wages, and pain & suffering. Most work on contingency — no fee unless you win.

John Marshall is one of 262,557 personal injury attorneys indexed nationally. Browse personal injury attorneys in Maryland →

Criminal Defense in Rockville

A criminal defense attorney protects your rights from arrest through trial. Find experienced lawyers handling DUI, drug, federal, theft, and violent-crime charges.

John Marshall is one of 212,605 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in Maryland →

Business & Corporate Law in Rockville

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

John Marshall is one of 497,491 business attorneys indexed nationally. Browse business attorneys in Maryland →

Power of Attorney in Rockville

John Marshall is one of 32,920 poa attorneys indexed nationally. Browse poa attorneys in Maryland →

Civil Litigation in Rockville

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

John Marshall is one of 450,751 litigation attorneys indexed nationally. Browse litigation attorneys in Maryland →

Jurisdictional Context

Why Local Counsel Matters in Rockville

Practicing law in Maryland. Legal matters in Maryland are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Rockville are typically filed in the local municipal court or the appropriate Maryland state district court, depending on subject matter and amount in controversy. An attorney licensed in Maryland 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 Maryland courts without local counsel or pro hac vice admission.

Rockville Courts and Legal Process

Choosing a Rockville-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 Maryland attorneys? Browse all attorneys in Rockville or all attorneys in Maryland.

Frequently Asked

Common Questions About John Marshall

Where is John Marshall's law office located?
John Marshall's law practice is located in Rockville, Maryland. The firm is Mulhern, Patterson and Marshall, LLP. You can contact the office directly through this profile page.
What practice areas does John Marshall handle?
John Marshall focuses on personal injury, criminal defense, business, poa, litigation. Each practice area listed reflects experience handling cases of that type in Maryland.
How long has John Marshall practiced law?
John Marshall has 44+ years of legal experience and has been licensed since 1982.
Where did John Marshall go to law school?
John Marshall earned their education at (—).
How can I contact John Marshall for a consultation?
You can contact John Marshall 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.
What awards or recognition has John Marshall received?
John Marshall's notable recognition includes: AV Preeminent.

Professional Profile

Why Clients in Rockville Choose John Marshall

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 John Marshall's practice in the field of personal injury, criminal defense, business, poa, and litigation.

Decade-Tested Legal Experience

John Marshall brings 44+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.

Multi-State Bar Admission

Licensed in Maryland and District of Columbia, John Marshall can represent clients in cases that span state lines or require counsel in multiple jurisdictions.

Broad Practice Area Coverage

Covering personal injury, criminal defense, and business, John Marshall can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.

Local Presence in Rockville

A Rockville-based practice means John Marshall 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 John Marshall Handles in Rockville

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

Car accident injury claims
Personal Injury
Slip and fall cases
Personal Injury
Wrongful death suits
Personal Injury
Workers' compensation appeals
Personal Injury
Business formation and structure
Business
Contract drafting and review
Business
Partnership disputes
Business
Merger and acquisition support
Business

This list is illustrative, not exhaustive. Contact John Marshall directly to discuss the specifics of your situation.

Search Reference

How People Find John Marshall Online

Prospective clients searching for legal help in Rockville 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 John Marshall.

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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 John Marshall directly.

Education & Law School Background

—
American University J.D.
- In Progress

Awards & Professional Honors

AV Preeminent

Bar Admissions & Licensed Jurisdictions

Maryland
Admitted: 1982
District of Columbia
Admitted: 1983

Client Reviews & Ratings — John Marshall

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