Mark Jason Agin
On the New York attorney register since 2013 · office in Washington, DC
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 5164249
- Admitted
- 2013 · Third Department
- Status
- Currently registered
- Next registration
- Apr 2027
Mark Jason Agin is currently registered on the New York attorney register file of Sep 29, 2026. Admitted in 2013 in the Third Department, with an office in Washington, DC; next registration due Apr 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 Mark Jason Agin has filed the biennial registration the court system requires; the next one is due in Apr 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
676 other attorneys list Milbank LLP or one of its other names as their employer on the register; 207 of them were admitted before 2013, and 39 of the 677 give an office in Washington, DC. The 5 whose admission is closest to 2013, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| Gayle Anne Berne | 2013 | Due to re‑register |
| Lyn Marie Brennan | 2013 | Suspended, delinquent |
| William John Corso | 2013 | Currently registered |
| Elizabeth Margaret Downing | 2013 | Currently registered |
| Katherine Kelly Fell | 2013 | 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 Jason Agin studied at Antonin Scalia Law School, George Mason University (the register spells it “George Mason University School of Law”). 152 of its 466 living graduates on the register were admitted in the 2010s, as Mark Jason Agin was.
- Same law school
- 466living graduates; 91.2% 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, 7,835 were admitted before 2013 and 4,158 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 Milbank LLP677 on the register, 207 of the others admitted before 2013; 39 of the 677 give an office in Washington, DC.
- Antonin Scalia Law School, George Mason University graduates on the register466 living, 91.2% registered.
- New York-admitted attorneys in Washington, DC12,527 living registrants give an office there.
- Admitted in 201310,251 people admitted in 2013 are on the register, 4,077 of them through the Third 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 Mark Jason Agin’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 Jason Agin in 2013. 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).