Katherine Grace Klaus
On the New York attorney register since 2005 · office in New Haven, CT
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 4320313
- Admitted
- 2005 · Third Department
- Status
- Currently registered
- Next registration
- Aug 2027
Katherine Grace Klaus is currently registered on the New York attorney register file of Sep 29, 2026. Admitted in 2005 in the Third Department, with an office in New Haven, CT; next registration due Aug 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 Grace Klaus has filed the biennial registration the court system requires; the next one is due in Aug 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
16 other attorneys list Halloran & Sage LLP or one of its other names as their employer on the register; 9 of them were admitted before 2005, and 2 of the 17 give an office in New Haven, CT. The 5 whose admission is closest to 2005, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| Keith Michael Blumenstock | 2000 | Suspended, delinquent |
| Alfred Alfredo Divincentis | 2007 | Currently registered |
| Oscar Luis Suarez | 2007 | Currently registered |
| Peter Joseph Royer | 2008 | Currently registered |
| Jonathan Kelly | 2010 | 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 Grace Klaus studied at Quinnipiac University School of Law. 491 of its 1,488 living graduates on the register were admitted in the 2000s, as Katherine Grace Klaus was.
- Same law school
- 1,488living graduates; 88.6% registered (current or due), against 87.1% overall
- Office in New Haven, CT
- 429living registrants (outside New York State)
Of the 429 living registrants with an office in New Haven, CT, 204 were admitted before 2005 and 210 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 Halloran & Sage LLP17 on the register, 9 of the others admitted before 2005; 2 of the 17 give an office in New Haven, CT.
- Quinnipiac University School of Law graduates on the register1,488 living, 88.6% registered.
- New York-admitted attorneys in New Haven, CT429 living registrants give an office there.
- Admitted in 20058,525 people admitted in 2005 are on the register, 2,667 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 Grace Klaus’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 Grace Klaus in 2005. 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).