Diane P. Sullivan
On the New York attorney register since 2014 · office in New York, NY
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 5219183
- Admitted
- 2014 · Third Department
- Status
- Currently registered
- Next registration
- Aug 2028
Diane P. Sullivan is currently registered on the New York attorney register file of Sep 29, 2026. Admitted in 2014 in the Third Department, with an office in New York, NY; next registration due Aug 2028. Since Jul 3, 2026 it has moved only through the routine two-year cycle.
What this status means on the register
On the register, “Currently registered” means the attorney has filed the biennial registration the court system requires; the next one is due in the month shown. How many hold this status.
- Due to re‑register to Currently registered the routine two-year cycle: the registration window closed with a filing
- Due to re‑register unchanged
- Due to re‑register the first file we hold
We show the 3 register files of the last twelve months (Jul 3, 2026, Aug 6, 2026, Sep 29, 2026). A change of standing between them is struck through in red; the routine birthday cycle is not.
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
667 other attorneys list Weil, Gotshal & Manges LLP or one of its other names as their employer on the register. The 5 whose admission is closest to 2014, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| Dennis F Adams | 2014 | Currently registered |
| Sarah Clemens Borden | 2014 | Due to re‑register |
| Brittany Rose Butwin | 2014 | Currently registered |
| Lana Elaine Castor | 2014 | Currently registered |
| Jessie Chiang | 2014 | 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
Diane P. Sullivan studied at University of Pennsylvania Carey Law School (the register spells it “University of Pennsylvania Law School”).
- Same law school
- 6,843living graduates; 88.7% registered (current or due), against 87.1% overall
- Office in New York, NY
- 93,604living registrants give an office there
Source: NY Office of Court Administration, attorney registration file (data.ny.gov, dataset eqw2-r5nb), downloaded Sep 29, 2026; living registrants only.
How to confirm it officially
The register is published by the court system; PlainAttorney shows it as released. For a statement of an attorney’s standing, contact the Attorney Registration Unit of the NY Office of Court Administration (nycourts.gov/attorneys), or ask the Appellate Division in the attorney’s department. 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; the court system publishes the file every few weeks, so its own search can be newer. The register shows only the current value: a suspension that ended before the files we hold, or discipline short of suspension such as a censure, leaves no trace here. Appellate Division decisions on attorney discipline are published in the New York Official Reports, online through the court system’s Law Reporting Bureau.