Michael Dean O’Brien
On the New York attorney register since 2020 · office in Rochester, NY
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 5758511
- Admitted
- 2020 · Fourth Department
- Status
- Currently registered
- Next registration
- Feb 2028
Michael Dean O’Brien is currently registered on the New York attorney register file of Sep 29, 2026. Admitted in 2020 in the Fourth Department, with an office in Rochester, NY; next registration due Feb 2028. The status is the same in all 3 files we hold.
What this status means on the register
On the register, “Currently registered” means Michael Dean O’Brien has filed the biennial registration the court system requires; the next one is due in Feb 2028.
- Currently registered unchanged
- Currently registered unchanged
- Currently registered the first file we hold
Source: NY Office of Court Administration, attorney registration file (data.ny.gov, dataset eqw2-r5nb), downloaded Sep 29, 2026; the Jul 3, 2026 and Aug 6, 2026 files for the history.
Others who list this employer on the register
5 other attorneys list Duke Law Firm, P.C. or one of its other names as their employer on the register; 2 of them were admitted before 2020, and 3 of the 6 give an office in Rochester, NY. The 5 whose admission is closest to 2020, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| Susan Kathleen Duke | 1996 | Currently registered |
| Katherine Barbara Fantigrossi | 2014 | Currently registered |
| Isabella Valentina Hohler | 2024 | Due to re‑register |
| Sarah Elizabeth Knox | 2026 | Currently registered |
| Gabrielle Taylor Powell | 2026 | Currently registered |
Source: NY Office of Court Administration, attorney registration file (data.ny.gov, dataset eqw2-r5nb), downloaded Sep 29, 2026; employer spellings merged (methodology).
Where this record sits on the register
Michael Dean O’Brien studied at Penn State Dickinson Law (the register spells it “PA State University Dickinson School of Law”). 129 of its 671 living graduates on the register were admitted in the 2020s, as Michael Dean O’Brien was.
- Same law school
- 671living graduates; 88.5% registered (current or due), against 87.1% overall
- Office in Rochester, NY
- 2,353living registrants
Of the 2,353 living registrants with an office in Rochester, NY, 2,011 were admitted before 2020 and 296 after.
Source: NY Office of Court Administration, attorney registration file (data.ny.gov, dataset eqw2-r5nb), downloaded Sep 29, 2026; living registrants only.
Questions this record leads to
- Penn State Dickinson Law graduates on the register671 living, 88.5% registered.
- Attorneys with an office in Rochester, NY2,353 living registrants give an office there.
- Monroe County’s registered bar2,430 currently registered, 3.22 per 1,000 residents.
- Admitted in 20208,276 people admitted in 2020 are on the register, 284 of them through the Fourth Department.
- Every registration that reads “Currently registered”286,911 on the register file of Sep 29, 2026, by decade of admission.
- What a New York lawyer may chargeThe court rules on fees, retainers and fee disputes, each cited.
How to confirm it officially
For a statement of Michael Dean O’Brien’s standing, contact the Attorney Registration Unit of the NY Office of Court Administration (nycourts.gov/attorneys), or ask the Appellate Division, Fourth Department, which admitted Michael Dean O’Brien in 2020. A complaint about this attorney would go to the Fourth Department’s grievance committee, which covers Monroe County, where the register places the office.
This page reads the register file of Sep 29, 2026, and the court system’s own search can be newer; the register shows only the current value, so a suspension that ended before the files we hold, or a censure, leaves no trace here (Appellate Division decisions are published through the court system’s Law Reporting Bureau).