Shimpei Yamamoto
On the New York attorney register since 2006 · office in Tokyo, Japan
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 4375911
- Admitted
- 2006 · Third Department
- Status
- Currently registered
- Next registration
- Aug 2028
Shimpei Yamamoto is currently registered on the New York attorney register file of Sep 29, 2026. Admitted in 2006 in the Third Department, with an office in Tokyo, Japan; next registration due Aug 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 Shimpei Yamamoto has filed the biennial registration the court system requires; the next one is due in Aug 2028.
- Due to re‑register to Currently registered the routine two-year cycle: the registration window closed with a filing
- Due to re‑register unchanged
- 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
2 other attorneys list Koga & Partners or one of its other names as their employer on the register; 2 of them were admitted before 2006, and all 3 give an office in Tokyo, Japan. The 2 whose admission is closest to 2006, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| Isomi Suzuki | 1981 | Currently registered |
| Taijun Ichii | 2004 | 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
Shimpei Yamamoto studied at University of Michigan Law School. 1,127 of its 4,806 living graduates on the register were admitted in the 2000s, as Shimpei Yamamoto was.
- Same law school
- 4,806living graduates; 86.9% registered (current or due), against 87.1% overall
- Office in Tokyo, Japan
- 2,762living registrants (outside the U.S.)
Of the 2,762 living registrants with an office in Tokyo, Japan, 981 were admitted before 2006 and 1,680 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
- University of Michigan Law School graduates on the register4,806 living, 86.9% registered.
- Admitted in 20068,638 people admitted in 2006 are on the register, 2,950 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 Shimpei Yamamoto’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 Shimpei Yamamoto in 2006. 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).