Brian Sean Kelleher
On the New York attorney register since 2003 · office in New York, NY
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 4133047
- Admitted
- 2003 · Second Department
- Status
- Currently registered
- Next registration
- Feb 2027
Brian Sean Kelleher is currently registered on the New York attorney register file of Sep 29, 2026. Admitted in 2003 in the Second Department, with an office in New York, NY; next registration due Feb 2027. The status is the same in all 3 files we hold.
What this status means on the register
On the register, “Currently registered” means Brian Sean Kelleher has filed the biennial registration the court system requires; the next one is due in Feb 2027.
- 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
517 other attorneys list Proskauer Rose LLP or one of its other names as their employer on the register; 140 of them were admitted before 2003, and 416 of the 518 give an office in New York, NY. The 5 whose admission is closest to 2003, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| Justin Charles Breen | 2003 | Currently registered |
| Suzanne Marie Dissinger | 2003 | Currently registered |
| Eric Stephen Johnson | 2003 | Currently registered |
| Andrew Marc Scott Jr. | 2003 | Currently registered |
| Bradley R Bobroff | 2004 | Due to re‑register |
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
Brian Sean Kelleher studied at Fordham University School of Law (the register spells it “FORDHAM”). 4,485 of its 20,418 living graduates on the register were admitted in the 2000s, as Brian Sean Kelleher was.
- Same law school
- 20,418living graduates; 87.9% registered (current or due), against 87.1% overall
- Office in New York, NY
- 93,604living registrants
Of the 93,604 living registrants with an office in New York, NY, 33,051 were admitted before 2003 and 58,728 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
- Everyone who lists Proskauer Rose LLP518 on the register, 140 of the others admitted before 2003; 416 of the 518 give an office in New York, NY.
- Fordham University School of Law graduates on the register20,418 living, 87.9% registered.
- Attorneys with an office in New York, NY93,604 living registrants give an office there.
- New York County’s registered bar75,989 currently registered, 46.63 per 1,000 residents.
- Admitted in 20038,250 people admitted in 2003 are on the register, 2,426 of them through the Second 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 Brian Sean Kelleher’s standing, contact the Attorney Registration Unit of the NY Office of Court Administration (nycourts.gov/attorneys), or ask the Appellate Division, Second Department, which admitted Brian Sean Kelleher in 2003. A complaint about this attorney would go to the First Department’s grievance committee, which covers New York 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).