MarcusBonsib, LLC - a Greenbelt, Maryland (MD) Criminal Defense Law Firm

Greenbelt Criminal Defense Law Firm

Updated: 06/25/2026

Areas of Practice

Criminal Defense
Federal Criminal Defense
DUI, etc.

Litigation: 95%

Firm Information

Overview

Founded in 1990 by partners Bruce L. Marcus and Robert C. Bonsib, MarcusBonsib, LLC, is a premier litigation firm headquartered in Greenbelt, Maryland. With over 100 years of combined trial experience, we deliver skilled, aggressive representation to individuals and organizations across state and federal trial and appellate courts in Maryland and the District of Columbia. We represent clients in a wide range of practice areas, including:

Criminal defense
Personal injury
Family law
Business consulting and civil litigation
Appellate practice
Professional discipline
Cannabis law
Election law

This comprehensive scope allows us to serve as a trusted legal resource for clients facing virtually any legal challenge.

Our founding partners each bring more than 35 years of distinguished legal experience, shaped by careers as federal and local prosecutors, public defenders, counsel to government agencies, and advocates for corporations, medical and law enforcement professionals and private individuals. Complementing their skills, partners Megan E. Coleman and Sydney M. Patterson further strengthen our team's depth and capability across a broad spectrum of legal disciplines.

Our dedication to top-tier service shines through in our selection by U.S. News & World Report as one of the nation’s “Best Law Firms,” along with the AV Preeminent* peer-review ratings through Martindale-Hubbell awarded to Mr. Marcus and Mr. Bonsib. Beyond that, several of our attorneys have been singled out as leading practitioners in the region by a range of highly regarded organizations.

At MarcusBonsib, LLC, we know that meaningful one-on-one attention matters just as much as sharp legal skill. When you hire our firm, the attorney you choose stays closely involved at every major step – so you have steady, committed guidance from beginning to end. To connect with an attorney, contact our Greenbelt, Maryland, office or meet with us virtually. We look forward to talking through your legal needs.

*AV®, AV Preeminent®, Martindale-Hubbell Distinguished and Martindale-Hubbell Notable are certification marks used under license in accordance with the Martindale-Hubbell certification procedures, standards and policies. Martindale-Hubbell® is the facilitator of a peer-review rating process. Ratings reflect the anonymous opinions of members of the bar and the judiciary. Martindale-Hubbell® Peer Review Ratings™ fall into two categories – legal ability and general ethical standards.

Awards and Honors

Awards

Super Lawyers® Selectees

MarcusBonsib, LLC selected for a Super Lawyers® list

Bonsib, Robert C. On a Super Lawyers® List
Coleman, Megan E. On a Super Lawyers® List
Compofelice, Jr., Joseph A. On a Super Lawyers® List
Marcus, Bruce L. On a Super Lawyers® List
Patterson, Sydney M. On a Super Lawyers® List

Languages

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English (Primary)
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Spanish
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Previous Law Firm Names

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Marcus & Bonsib
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Published Works

Articles

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Attorneys

Bruce L. Marcus Esq.

Partner

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Megan E. Coleman Esq.

Partner

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Robert C. Bonsib Esq.

Partner

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Sydney M. Patterson Esq.

Partner

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