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David D. O'Brien





University of Michigan Law School, J.D., 2000

Swarthmore College, B.A., 1996

Bar Admissions

Court Admissions

U.S. District Court

  • Eastern District of Michigan
  • Western District of Michigan

David O'Brien practices in all areas of criminal defense under state and federal law, and specializes in working with youthful and first-time offenders.

He works primarily at the trial court level, but also has experience preparing petitions for post-conviction relief. Earlier in his career, David clerked for federal judge Richard P. Matsch, who presided in the Oklahoma City bombing case against Timothy McVeigh.

Representative Matters

David represented a client who was charged with several serious felony counts under state law. Before he was retained, the matter was set for a probable cause hearing, and the defendant was bound over for trial based upon the presentation of evidence which led the court to conclude that there was reasonable ground to believe that he committed the offenses. 

Upon his retention, David filed a motion to remand the matter for a new probable cause hearing based on new evidence that the testimony of the complaining witness was not credible. The motion was granted, and at the new probable cause hearing, David exposed the contradictions in the testimony and ultimately convinced the court to dismiss the charges.


University of Michigan Law School, Editor, Michigan Law Review

Michigan Super Lawyers, Criminal Defense, Rising Star, 2008, 2010-2014

Professional Activities

State Bar of Michigan

State Bar of Massachusetts