Atty. Mark Andrew Grannis

Atty. Mark Andrew Grannis

Mark Andrew Grannis is a lawyer practicing litigation, civil litigation, trial practice and 13 other areas of law. Mark received a A.B. degree from Georgetown University in 1985, and has been licensed for 37 years.

Washington Washington 37 yrs experience 37 year
Call (202) 367-9055 Book Appointment

Profile Summary

About Mark Andrew Grannis at a glance

Mark Andrew Grannis is a Managing Partner based in Washington, District of Columbia, practicing at Harris Wiltshire And Grannis Llp. They have 37+ years of legal experience, licensed to practice since 1989. Their practice focuses on ip, litigation, civil rights, adr, and appellate. Admitted to practice in California (1989), District of Columbia (1991), New York (2007), and Maryland (2011). Educated at University of Michigan Law School (J.D., 1988) and Georgetown University (A.B. Economics, 1985). Recognitions include AV Preeminent. Serands clients in Washington, DC and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mark Andrew Grannis is a lawyer practicing litigation, civil litigation, trial practice and 13 other areas of law
  • Mark received a A.B. degree from Georgetown University in 1985, and has been licensed for 37 years
  • Mark practices at Harris, Wiltshire & Grannis LLP in Washington, DC

Practice Areas Explained

Mark Andrew Grannis's Areas of Practice

Each practice area below reflects the types of cases Mark Andrew Grannis 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.

Mark Andrew Grannis is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in District of Columbia →

Civil Litigation

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

Mark Andrew Grannis is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in District of Columbia →

Civil Rights

Civil rights attorneys for discrimination, police misconduct, constitutional rights, and civil liberties cases.

Mark Andrew Grannis is one of 70,245 civil rights attorneys indexed nationally. Browse civil rights attorneys in District of Columbia →

Mediation & Arbitration

Mediators and arbitrators for civil, commercial, family, and employment dispute resolution.

Mark Andrew Grannis is one of 73,906 adr attorneys indexed nationally. Browse adr attorneys in District of Columbia →

Appellate Practice

Appellate attorneys for civil and criminal appeals at state and federal court.

Mark Andrew Grannis is one of 86,319 appellate attorneys indexed nationally. Browse appellate attorneys in District of Columbia →

Jurisdictional Context

Why local counsel matters in District of Columbia

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

Looking for additional District of Columbia attorneys? Browse all attorneys in Washington or all attorneys in District of Columbia.

Frequently Asked

Common questions about Mark Andrew Grannis

Where is Mark Andrew Grannis's law office located?
Mark Andrew Grannis's law practice is located in Washington, District of Columbia. The firm is Harris Wiltshire And Grannis Llp. You can contact the office directly through this profile page.
What practice areas does Mark Andrew Grannis handle?
Mark Andrew Grannis focuses on ip, litigation, civil rights, adr, appellate. Each practice area listed reflects experience handling cases of that type in District of Columbia.
How long has Mark Andrew Grannis practiced law?
Mark Andrew Grannis has 37+ years of legal experience and has been licensed since 1989.
Where did Mark Andrew Grannis go to law school?
Mark Andrew Grannis earned their education at (J.D., 1988); (A.B. Economics, 1985).
How can I contact Mark Andrew Grannis for a consultation?
You can contact Mark Andrew Grannis 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 Mark Andrew Grannis received?
Mark Andrew Grannis's notable recognition includes: AV Preeminent.

Education

J.D.
University of Michigan Law School
- 1988
A.B. Economics
Georgetown University
- 1985

Awards

AV Preeminent

Bar Admissions

California
Admitted: 1989
District of Columbia
Admitted: 1991
New York
Admitted: 2007
Maryland
Admitted: 2011

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