John Hagan Olson
On the New York attorney register since 2008 · office in San Francisco, CA
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 4629309
- Admitted
- 2008 · First Department
- Status
- Currently registered
- Next registration
- Feb 2028
John Hagan Olson is currently registered on the New York attorney register file of Sep 29, 2026. Admitted in 2008 in the First Department, with an office in San Francisco, CA; next registration due Feb 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 Hagan Olson has filed the biennial registration the court system requires; the next one is due in Feb 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
The register gives this attorney’s employer as “Gunderson Dettmer”. We count that spelling with Gunderson Dettmer Stough Villeneuve Franklin & Hachigian, LLP, the name most registrants give for the firm now; the register does not say where the attorney works today.
139 other attorneys list Gunderson Dettmer Stough Villeneuve Franklin & Hachigian, LLP or one of its other names as their employer on the register; 14 of them were admitted before 2008, and 6 of the 140 give an office in San Francisco, CA. The 5 whose admission is closest to 2008, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| Jason S. Del Monico | 2008 | Due to re‑register |
| Adan Canizales Muller | 2008 | Currently registered |
| Mark Edward Oblad | 2008 | Currently registered |
| Jonathan Christopher Pentzien | 2008 | Due to re‑register |
| Aaron Grant R. Rubin | 2008 | Currently registered |
All 140 registrations that list Gunderson Dettmer Stough Villeneuve Franklin & Hachigian, 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 Hagan Olson studied at Northwestern University Pritzker School of Law (the register spells it “NORTHWESTERN UNIVERSITY SCHOOL OF LAW”). 758 of its 3,128 living graduates on the register were admitted in the 2000s, as John Hagan Olson was.
- Same law school
- 3,128living graduates; 87.0% registered (current or due), against 87.1% overall
- Office in San Francisco, CA
- 2,474living registrants (outside New York State)
Of the 2,474 living registrants with an office in San Francisco, CA, 1,014 were admitted before 2008 and 1,357 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 Gunderson Dettmer Stough Villeneuve Franklin & Hachigian, LLP140 on the register, 14 of the others admitted before 2008; 6 of the 140 give an office in San Francisco, CA.
- Northwestern University Pritzker School of Law graduates on the register3,128 living, 87.0% registered.
- New York-admitted attorneys in San Francisco, CA2,474 living registrants give an office there.
- Admitted in 20089,683 people admitted in 2008 are on the register, 3,620 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 John Hagan Olson’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 John Hagan Olson in 2008. 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).