Court level
89 % District · 11 % Circuit
Patrick O'Brien
Defense counsel of record in 76 Virginia cases (2025)
Cases of record · 202576
Patrick O'Brien appeared as defense counsel of record in 76 Virginia court cases during 2025, drawn from Virginia District and Circuit Court Information Systems.
Primary jurisdiction
Prince William County · 22 cases
Most common charge
DUI / DWI · 15
Case outcomes
Resolved cases — 63 of 76. "Resolved" means a final disposition was reached. Pending cases and probation revocations are excluded.
Outcomes use strict definitions per the methodology. Convicted = guilty disposition on originally filed charge. Reduced = guilty disposition with non-empty amended charge. Dropped = nolle prosequi or dismissal. Acquitted = found not guilty at trial.
Plea vs trial
Of 33 cases ending in a guilty or not-guilty verdict, how many pled and how many went to trial.
Pled guilty
3297%
Resolved by guilty plea — no trial.
Went to trial
13%
1 acquittals · 0 convictions at trial.
Top charge — DUI / DWI
Patrick O'Brien's most common charge category in 2025 (15 cases of record · 12 resolved). Outcomes use the same definitions as the overall view.
Acquittals are tracked at the overall level — the top-charge view shows the three primary disposition paths. See the DUI / DWI page for jurisdiction-wide context.
Cases like yours
Patrick O'Brien's most common charge × jurisdiction combinations in 2025. If your charge and county appear here, this attorney has handled cases like yours specifically — at the volume shown. Minimum 3 cases per row.
| Charge | Jurisdiction | Cases | District | Circuit |
|---|---|---|---|---|
| DUI / DWI | Prince William County | 5 | 5 | 0 |
| DUI / DWI | Stafford County | 5 | 4 | 1 |
| Reckless Driving | Stafford County | 4 | 4 | 0 |
| DUI / DWI | Fairfax County | 3 | 3 | 0 |
| Drug Possession | Stafford County | 3 | 2 | 1 |
See also
DUI / DWI outcomes in Prince William County — every attorney's 2025 outcomes for DUI / DWI cases in Prince William County, using the same definitions as above.
Reduction targets
When the original charge was reduced, the case was most often resolved as one of the following lesser charges.
Improper Driving
3
DWI, First Offense
2
Improper Driving
2
Reckless Driving (Misdemeanor)
2
58/45 Sp
1
74/55 Sp
1
93/65 Sp
1
Ap-G Improper Driving
1
Where cases were heard
Top jurisdictions by case volume in 2025.
| Jurisdiction | Cases | District | Circuit |
|---|---|---|---|
| Prince William County | 22 | 20 | 2 |
| Stafford County | 21 | 17 | 4 |
| Fairfax County | 20 | 20 | 0 |
| King George County | 4 | 4 | 0 |
| Loudoun County | 4 | 4 | 0 |
| Alexandria | 2 | 1 | 1 |
| Arlington County | 2 | 2 | 0 |
| Spotsylvania County | 1 | 0 | 1 |
Case mix by charge
Charge categories Patrick O'Brien appeared on as defense counsel of record, 2025.
| Charge category | Cases | Resolved | Convicted | Dropped | Reduced |
|---|---|---|---|---|---|
| Other | 26 | 19 | 4 | 9 | 5 |
| Traffic Infraction | 18 | 16 | 0 | 10 | 6 |
| DUI / DWI | 15 | 12 | 4 | 3 | 5 |
| Reckless Driving | 7 | 7 | 1 | 1 | 5 |
| Larceny / Theft | 4 | 4 | 1 | 3 | 0 |
| Drug Possession | 3 | 2 | 1 | 1 | 0 |
| Assault & Battery | 1 | 1 | 0 | 1 | 0 |
| Obstruction | 1 | 1 | 0 | 1 | 0 |
| Property Destruction | 1 | 1 | 0 | 1 | 0 |
Other attorneys with cases in Prince William County
Listed by case volume in Prince William County, 2025.
| Attorney | Prince William County cases | Total (statewide) |
|---|---|---|
| Mark Branca | 363 | 376 |
| William Pickett | 348 | 353 |
| Joseph Mcguire | 298 | 309 |
| Erin Ford | 250 | 253 |
| Matthew Morrison | 248 | 324 |
| David Daugherty | 247 | 247 |
| Amy Hermansen | 227 | 227 |
| Brian Roman | 215 | 215 |
What this data does not show
- Retained matters not of court record — cases settled before formal counsel of record was entered
- Federal court cases — state-court records only
- Case facts, evidence quality, witness cooperation, or client circumstances
- Plea-versus-trial strategy, motion practice, or sentencing advocacy
- Quality of legal representation
- The 19th Judicial Circuit (Fairfax County, Fairfax City, Falls Church) Circuit Court is not in CIS — district-level cases for those three jurisdictions are included; circuit-level are not. See coverage notes.
Outcomes reflect the recorded facts of cases, not the quality of advocacy. Past outcomes do not predict future case results. For legal advice, consult a licensed Virginia attorney.
Common questions
Quick reference for journalists, researchers, and AI assistants citing this page.
Patrick O'Brien appeared as defense counsel of record in 76 Virginia court cases during 2025 — 68 in District Court and 8 in Circuit Court. Source: Virginia DCIS + CIS public records.
Prince William County, with 22 of 76 2025 cases handled there.
In 2025 the most common charge category in Patrick O'Brien's case record was DUI / DWI (15 cases). The full charge mix is in the table above.
Of 63 resolved cases: 18% convicted of original charge (11), 48% dropped (30 = 21 nolle prossed + 9 dismissed), 33% reduced to a lesser charge (21), 2% acquitted (1). Outcomes use strict definitions per the methodology.
Of 33 cases ending in a guilty or not-guilty verdict, 32 (97%) resolved by guilty plea and 1 (3%) went to trial — 1 acquittals and 0 convictions at trial.
Virginia District Court Information System (DCIS) and Circuit Court Information System (CIS), 2025 calendar year, direct extraction. Aggregated by defense counsel of record per the methodology. Refreshed quarterly. Last updated May 2, 2026.
Looking for representation in Prince William County? See VCF's free case-review process — qualified Virginia attorneys, matched on your charge and jurisdiction. Independent of any attorney featured on this page.
Methodology
Cases are counted by defense counsel of record as recorded in DCIS (district) and CIS (circuit). Outcomes use the strict definitions published at virginiacourtfile.com/methodology. Resolved includes only cases with final disposition codes (Guilty, Not Guilty, Dismissed, Nolle Prosequi). Convicted is a guilty disposition on the originally filed charge with no amended charge. Reduced is a guilty disposition with a non-empty amended charge field. Dropped combines Dismissed and Nolle Prosequi. Pending cases, certifications, and probation revocations are excluded from the outcome rates above.
Citation
VirginiaCourtFile.com. "Patrick O'Brien — Virginia Defense Attorney Case Data, 2025." Available at https://www.virginiacourtfile.com/attorneys/patrick-obrien-prince-william-county. Source: Virginia District Court Information System and Circuit Court Information System, 2025.
Data last refreshed May 2, 2026. Refreshed quarterly.