John Arthur Trenor
On the New York attorney register since 1996 · office in Washington, DC
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 2721496
- Admitted
- 1996 · Third Department
- Status
- Currently registered
- Next registration
- Apr 2028
John Arthur Trenor is currently registered on the New York attorney register file of Sep 29, 2026. Admitted in 1996 in the Third Department, with an office in Washington, DC; next registration due Apr 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 John Arthur Trenor has filed the biennial registration the court system requires; the next one is due in Apr 2028.
- 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
193 other attorneys list Wilmer Cutler Pickering Hale and Dorr LLP or one of its other names as their employer on the register; 18 of them were admitted before 1996, and 44 of the 194 give an office in Washington, DC. The 5 whose admission is closest to 1996, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| Rosemary Grace Reilly | 1995 | Currently registered |
| Thomas Edward Anderson | 1996 | Currently registered |
| Jeannette Kathleen Boot | 1996 | Currently registered |
| Vinita Ferrera | 1996 | Due to re‑register |
| Jonathan Edward Paikin | 1997 | Currently registered |
All 194 registrations that list Wilmer Cutler Pickering Hale and Dorr LLP
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
John Arthur Trenor studied at University of Chicago Law School (the register spells it “UNIV OF CHICAGO”). 490 of its 3,232 living graduates on the register were admitted in the 1990s, as John Arthur Trenor was.
- Same law school
- 3,232living graduates; 87.4% 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, 1,883 were admitted before 1996 and 10,437 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 Wilmer Cutler Pickering Hale and Dorr LLP194 on the register, 18 of the others admitted before 1996; 44 of the 194 give an office in Washington, DC.
- University of Chicago Law School graduates on the register3,232 living, 87.4% registered.
- New York-admitted attorneys in Washington, DC12,527 living registrants give an office there.
- Admitted in 19966,887 people admitted in 1996 are on the register, 1,621 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 John Arthur Trenor’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 John Arthur Trenor in 1996. 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).