Ariel B Seidner
On the New York attorney register since 2020 · office in Washington, DC
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 5811633
- Admitted
- 2020 · First Department
- Status
- Currently registered
- Next registration
- Jul 2028
Ariel B Seidner is currently registered on the New York attorney register file of Sep 29, 2026. Admitted in 2020 in the First Department, with an office in Washington, DC; next registration due Jul 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 Ariel B Seidner has filed the biennial registration the court system requires; the next one is due in Jul 2028.
- Currently registered unchanged
- Due to re‑register to Currently registered the routine two-year cycle: the registration window closed with a filing
- 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
239 other attorneys list Duane Morris LLP or one of its other names as their employer on the register; 200 of them were admitted before 2020, and 8 of the 240 give an office in Washington, DC. The 5 whose admission is closest to 2020, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| Kelly Rebecca Carr | 2019 | Currently registered |
| Genevieve Burger-Weiser | 2020 | Currently registered |
| Laura Marie Duane | 2020 | Due to re‑register |
| Bradley Thomas Lenox | 2020 | Currently registered |
| Erin Elizabeth McQuiggan | 2020 | 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
Ariel B Seidner studied at Fordham University School of Law. 2,837 of its 20,418 living graduates on the register were admitted in the 2020s, as Ariel B Seidner was.
- Same law school
- 20,418living graduates; 87.9% registered (current or due), against 87.1% overall
- Office in Washington, DC
- 12,527living registrants (outside New York State)
Of the 12,527 living registrants with an office in Washington, DC, 10,990 were admitted before 2020 and 1,171 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 Duane Morris LLP240 on the register, 200 of the others admitted before 2020; 8 of the 240 give an office in Washington, DC.
- Fordham University School of Law graduates on the register20,418 living, 87.9% registered.
- New York-admitted attorneys in Washington, DC12,527 living registrants give an office there.
- Admitted in 20208,276 people admitted in 2020 are on the register, 2,174 of them through the First 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 Ariel B Seidner’s standing, contact the Attorney Registration Unit of the NY Office of Court Administration (nycourts.gov/attorneys), or ask the Appellate Division, First Department, which admitted Ariel B Seidner in 2020. The register places the office outside New York, so a complaint would go to that department’s grievance committee (22 NYCRR 1240.7(a)(2)).
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).