Taisei Katano
On the New York attorney register since 2026 · office in New York, NY
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 6280564
- Admitted
- 2026 · Third Department
- Status
- Currently registered
- Next registration
- May 2028
Taisei Katano is currently registered on the New York attorney register file of Sep 29, 2026. Admitted in 2026 in the Third Department, with an office in New York, NY; next registration due May 2028. The status is the same in all 3 files we hold.
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.
- Currently registered unchanged
- Currently registered unchanged
- Currently registered 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
The register gives this attorney’s employer as “Mori Hamada US LLP”. We count that spelling with Mori Hamada & Matsumoto, the name most registrants give for the firm now; the register does not say where the attorney works today.
144 other attorneys list Mori Hamada & Matsumoto or one of its other names as their employer on the register. The 5 whose admission is closest to 2026, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| Go Chihara | 2026 | Currently registered |
| Masataka Hayano | 2026 | Currently registered |
| Yasutaka Hosaka | 2026 | Currently registered |
| Tsubasa Oguri | 2026 | Currently registered |
| Ryota Sato | 2026 | 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
Taisei Katano studied at University of Pennsylvania Carey 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.