Katherine Tien Yat Ko
On the New York attorney register since 2025 · office in New York, NY
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 6188155
- Admitted
- 2025 · Third Department
- Status
- Currently registered
- Next registration
- Oct 2027
Katherine Tien Yat Ko is currently registered on the New York attorney register file of Sep 29, 2026. Admitted in 2025 in the Third Department, with an office in New York, NY; next registration due Oct 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 Katherine Tien Yat Ko has filed the biennial registration the court system requires; the next one is due in Oct 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
1,433 other attorneys list Latham & Watkins LLP or one of its other names as their employer on the register; 1,275 of them were admitted before 2025, and 925 of the 1,434 give an office in New York, NY. The 5 whose admission is closest to 2025, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| Jack Henry Robert Anderson | 2025 | Currently registered |
| Ana Carolina Andrade | 2025 | Currently registered |
| Gabriella Angelique Badmus | 2025 | Currently registered |
| Henry Deboer Balaban | 2025 | Currently registered |
| Jennifer Marie Barretto | 2025 | 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
Katherine Tien Yat Ko studied at Harvard Law School. 2,092 of its 14,378 living graduates on the register were admitted in the 2020s, as Katherine Tien Yat Ko was.
- Same law school
- 14,378living graduates; 86.1% 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, 88,289 were admitted before 2025 and 1,996 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 Latham & Watkins LLP1,434 on the register, 1,275 of the others admitted before 2025; 925 of the 1,434 give an office in New York, NY.
- Harvard Law School graduates on the register14,378 living, 86.1% registered; 108 of them list Latham & Watkins LLP.
- 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 20259,764 people admitted in 2025 are on the register, 4,056 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 Katherine Tien Yat Ko’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 Katherine Tien Yat Ko in 2025. 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).