Frederic Harry Marienthal III
On the New York attorney register since 1991 · office in Denver, CO
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 2403129
- Admitted
- 1991 · First Department
- Status
- Currently registered
- Next registration
- Dec 2027
Frederic Harry Marienthal III is currently registered on the New York attorney register file of Sep 29, 2026. Admitted in 1991 in the First Department, with an office in Denver, CO; next registration due Dec 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 Frederic Harry Marienthal III has filed the biennial registration the court system requires; the next one is due in Dec 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
21 other attorneys list Kutak Rock LLP or one of its other names as their employer on the register; 5 of them were admitted before 1991, and 3 of the 22 give an office in Denver, CO. The 5 whose admission is closest to 1991, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| Steven S. Huff | 1987 | Suspended, delinquent |
| Patricia Ann Burdyny | 1989 | Currently registered |
| Mitchell Seth Padover | 1989 | Currently registered |
| Robin Elisabeth Clark | 1993 | Currently registered |
| Edward Paul Gonzales | 1993 | 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
Frederic Harry Marienthal III studied at University of Denver Sturm College of Law (the register spells it “UNIVERSITY OF DENVER”). 67 of its 418 living graduates on the register were admitted in the 1990s, as Frederic Harry Marienthal III was.
- Same law school
- 418living graduates; 80.4% registered (current or due), against 87.1% overall
- Office in Denver, CO
- 889living registrants (outside New York State)
Of the 889 living registrants with an office in Denver, CO, 102 were admitted before 1991 and 778 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 Kutak Rock LLP22 on the register, 5 of the others admitted before 1991; 3 of the 22 give an office in Denver, CO.
- University of Denver Sturm College of Law graduates on the register418 living, 80.4% registered.
- New York-admitted attorneys in Denver, CO889 living registrants give an office there.
- Admitted in 19916,456 people admitted in 1991 are on the register, 2,205 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 Frederic Harry Marienthal III’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 Frederic Harry Marienthal III in 1991. 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).