Thomas Sung Won Yoon
On the New York attorney register since 2019 · office in Washington, DC
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 5645643
- Admitted
- 2019 · Third Department
- Status
- Currently registered
- Next registration
- May 2027
Thomas Sung Won Yoon is currently registered on the New York attorney register file of Sep 29, 2026. Admitted in 2019 in the Third Department, with an office in Washington, DC; next registration due May 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 Thomas Sung Won Yoon has filed the biennial registration the court system requires; the next one is due in May 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
334 other attorneys list Dentons US LLP or one of its other names as their employer on the register; 257 of them were admitted before 2019, and 22 of the 335 give an office in Washington, DC. The 5 whose admission is closest to 2019, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| Mohamad Kassem Al Rifai | 2019 | Currently registered |
| Lindsey Taylor Bergman | 2019 | Currently registered |
| Bryan Victor Fuchs | 2019 | Delinquent |
| Edward Francis Michel | 2019 | Currently registered |
| Chuyue Wang | 2019 | 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
Thomas Sung Won Yoon studied at George Washington University Law School. 1,770 of its 6,333 living graduates on the register were admitted in the 2010s, as Thomas Sung Won Yoon was.
- Same law school
- 6,333living graduates; 88.8% 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, 10,631 were admitted before 2019 and 1,537 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 Dentons US LLP335 on the register, 257 of the others admitted before 2019; 22 of the 335 give an office in Washington, DC.
- George Washington University Law School graduates on the register6,333 living, 88.8% registered.
- New York-admitted attorneys in Washington, DC12,527 living registrants give an office there.
- Admitted in 20198,536 people admitted in 2019 are on the register, 3,354 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 Thomas Sung Won Yoon’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 Thomas Sung Won Yoon in 2019. 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).