Karen Ann Popp
On the New York attorney register since 1987 · office in Washington, DC
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 2137594
- Admitted
- 1987 · Second Department
- Status
- Currently registered
- Next registration
- Jan 2027
Karen Ann Popp is currently registered on the New York attorney register file of Sep 29, 2026. Admitted in 1987 in the Second Department, with an office in Washington, DC; next registration due Jan 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 Karen Ann Popp has filed the biennial registration the court system requires; the next one is due in Jan 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
799 other attorneys list Sidley Austin LLP or one of its other names as their employer on the register; 23 of them were admitted before 1987, and 70 of the 800 give an office in Washington, DC. The 5 whose admission is closest to 1987, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| Charles Harold Baker | 1986 | Due to re‑register |
| Daniel Arthur Gerard | 1987 | Delinquent |
| Robert Lowell Golub | 1987 | Currently registered |
| Holly J. Gregory | 1987 | Currently registered |
| William R. Massey | 1987 | 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
Karen Ann Popp studied at University of North Carolina School of Law (the register spells it “UNIVERSITY OF NORTH CAROLINA”). 125 of its 873 living graduates on the register were admitted in the 1980s, as Karen Ann Popp was.
- Same law school
- 873living graduates; 89.5% 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, 753 were admitted before 1987 and 11,684 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 Sidley Austin LLP800 on the register, 23 of the others admitted before 1987; 70 of the 800 give an office in Washington, DC.
- University of North Carolina School of Law graduates on the register873 living, 89.5% registered.
- New York-admitted attorneys in Washington, DC12,527 living registrants give an office there.
- Admitted in 19875,948 people admitted in 1987 are on the register, 2,491 of them through the Second 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 Karen Ann Popp’s standing, contact the Attorney Registration Unit of the NY Office of Court Administration (nycourts.gov/attorneys), or ask the Appellate Division, Second Department, which admitted Karen Ann Popp in 1987. 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).