MarcusBonsib, LLC

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Experienced Well-Respected

45Years Of Criminal Trial Experience

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Sydney M. Patterson, Esq.








Areas Of Practice

  • Criminal Defense
  • Civil Litigation
  • Appellate Advocacy

Bar Admissions

  • Maryland
  • U.S. District Court for the District of Maryland
  • U.S. District Court for the District of Columbia
  • U.S. Court of Appeals 4th Circuit


  • American University, Washington College of Law, Washington, District of Columbia
    • J.D. – 2011
    • Honors:
      Dean’s Fellow: Research & Writing Assistant to Professor David E. Aaronson
  • Xavier University, Cincinnati, Ohio
    • B.A. – 2008
    • Honors:
      Dean’s List
    • Major:
      Political Science
    • Major:

Honors and Awards

  • Super Lawyers Rising Star (2020)
  • Super Lawyers Rising Star (2019)
  • Court of Appeals Advisory Committee to Explore the Feasibility of Maryland’s Adoption of the Uniform Bar Examination, Member

Professional Associations and Memberships

  • Appellate Panel for the Maryland Office of the Public Defender
  • American Bar Association (Litigation & Criminal Justice Sections)
  • Federal Bar Association (Federal Litigation & Criminal Law Sections)
  • National Association of Criminal Defense Lawyers
  • Maryland State Bar Association (Litigation & Criminal Law Sections)
  • Maryland Criminal Defense Attorneys’ Association
  • Maryland Hispanic Bar Association
  • Hispanic National Bar Association
  • Montgomery County Bar Association
  • Prince George’s County Bar Association

Published Works

  • David E. Aaronson & Sydney M. Patterson, Modernizing Jury Instructions in the Age of Social Media, 27 ABA CRIMINAL JUSTICE 26 (Winter 2013)
  • Super Slot Swap: Delta, U.S. Airways Slot Swap Approved By DOT, ABA TRANSP. COMMITTEE Q., Winter 2012, at 9, 18–19


  • Spanish

Past Employment Positions

  • The Honorable Gary E. Bair, Circuit Court for Montgomery County (Jan. 2012–Sept. 2013), Law Clerk
  • David E. Aaronson, Maryland Criminal Jury Instructions & Commentary (2011), Research Associate
  • The Honorable Peter C. Schaumber, Board Member, National Labor Relations Board (2010), Legal Intern
Over 45 years of trial experience as a federal and state prosecutor and as a criminal defense attorney