Catherine Ella Sum
On the New York attorney register since 2013 · office in Palo Alto, CA
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 5097761
- Admitted
- 2013 · First Department
- Status
- Currently registered
- Next registration
- Oct 2027
Catherine Ella Sum is currently registered on the New York attorney register file of Sep 29, 2026. Admitted in 2013 in the First Department, with an office in Palo Alto, CA; next registration due Oct 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 Catherine Ella Sum has filed the biennial registration the court system requires; the next one is due in Oct 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
622 other attorneys list Ropes & Gray LLP or one of its other names as their employer on the register; 205 of them were admitted before 2013. The 5 whose admission is closest to 2013, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| Andrea Conzatti | 2013 | Currently registered |
| Gabrielle Nicole Dibernardi | 2013 | Currently registered |
| Patrick Serge Dorime | 2013 | Delinquent |
| Meghan Joanne Gilligan Palermo | 2013 | Currently registered |
| Yana Victorovna Grishkan | 2013 | Due to re‑register |
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
Catherine Ella Sum studied at University of Toronto Faculty of Law (the register spells it “UNIVERSITY OF TORONTO”). 257 of its 939 living graduates on the register were admitted in the 2010s, as Catherine Ella Sum was.
- Same law school
- 939living graduates; 91.4% registered (current or due), against 87.1% overall
- Office in Palo Alto, CA
- 393living registrants (outside New York State)
Of the 393 living registrants with an office in Palo Alto, CA, 259 were admitted before 2013 and 118 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 Ropes & Gray LLP623 on the register, 205 of the others admitted before 2013.
- University of Toronto Faculty of Law graduates on the register939 living, 91.4% registered.
- New York-admitted attorneys in Palo Alto, CA393 living registrants give an office there.
- Admitted in 201310,251 people admitted in 2013 are on the register, 2,956 of them through the First 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 Catherine Ella Sum’s standing, contact the Attorney Registration Unit of the NY Office of Court Administration (nycourts.gov/attorneys), or ask the Appellate Division, First Department, which admitted Catherine Ella Sum in 2013. 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).