Mark J. Mahoney
On the New York attorney register since 1975 · office in Buffalo, NY
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 1619071
- Admitted
- 1975 · Third Department
- Status
- Due to re‑register
- Next registration
- Aug 2026
Mark J. Mahoney is due to re‑register on the New York attorney register file of Sep 29, 2026. Admitted in 1975 in the Third Department, with an office in Buffalo, NY; next registration due Aug 2026. The status is the same in all 3 files we hold. The registration was due in Aug 2026 and the register has not recorded it as filed.
What this status means on the register
On the register, “Due to re‑register” means the attorney has a biennial registration falling due or overdue: the rule asks for it within 30 days after the attorney’s birthday in each alternate year, and the record gives the month it is due. The value stays until the register records the filing or marks the registration delinquent, so the month can have passed; by itself it is not a finding.
- Due to re‑register unchanged
- Due to re‑register unchanged
- Due to re‑register 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
3 other attorneys list Harrington & Mahoney or one of its other names as their employer on the register; 1 of them was admitted before 1975, and all 4 give an office in Buffalo, NY. The 3 whose admission is closest to 1975, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| James Patrick Harrington | 1970 | Currently registered |
| Winter Elizabeth Eaton | 2024 | Currently registered |
| Zachary Earl Buncy | 2025 | 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
Mark J. Mahoney studied at University at Buffalo School of Law (SUNY) (the register spells it “SUNY Buffalo Law School”). 1,135 of its 9,828 living graduates on the register were admitted in the 1970s, as Mark J. Mahoney was.
- Same law school
- 9,828living graduates; 90.9% registered (current or due), against 87.1% overall
- Office in Buffalo, NY
- 3,467living registrants
Of the 3,467 living registrants with an office in Buffalo, NY, 108 were admitted before 1975 and 3,326 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
- University at Buffalo School of Law (SUNY) graduates on the register9,828 living, 90.9% registered.
- Attorneys with an office in Buffalo, NY3,467 living registrants give an office there.
- Erie County’s registered bar4,149 currently registered, 4.36 per 1,000 residents.
- Admitted in 19753,195 people admitted in 1975 are on the register, 271 of them through the Third Department.
- Every registration that reads “Due to re‑register”47,986 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 Mark J. Mahoney’s standing, contact the Attorney Registration Unit of the NY Office of Court Administration (nycourts.gov/attorneys), or ask the Appellate Division, Third Department, which admitted Mark J. Mahoney in 1975. A complaint about this attorney would go to the Fourth Department’s grievance committee, which covers Erie 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).