New York attorney record · Judicial Dept 3
Mariko Hirose
University Of Pennsylvania; Institute Of Japan alumna, admitted to the New York bar in 2004. This established record's status, address, and registration history come straight from the NY Office of Court Administration.
- 2004
- Admitted
- 22
- Years in bar
- 4242731
- NY reg #
The record in one line
Mariko Hirose has held an active New York bar license for 22 years - admitted in 2004, longer-tenured than 51% of the state's currently-active attorneys.
- 22 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- Top 49%
- by tenure among active NY attorneys
- Law school
- University Of Pennsylvania; Institute Of Japan
Data updated May 2026
What this profile tells you
Bar status & tenure
Mariko Hirose carries New York bar registration 4242731, an established, active practitioner in good standing. Registration is recorded within Judicial Department 3, the appellate division overseeing this attorney's home district.
Practice context & education
Practice address is listed under Sunflower Law Office, located in Tokyo 107-0052. 1 other attorney shares this firm affiliation in the registry. Educational background: UNIVERSITY OF PENNSYLVANIA; INSTITUTE OF JAPAN.
State context & due diligence
With an established practice on record, Mariko Hirose remains inside the New York bar's active cohort - see below for how that share of the register compares.
Experience vs. the active New York bar
Mariko Hirose was admitted in 2004, giving 22 years on the New York register. The histogram places that tenure against every currently-active attorney in the state, taller bars hold more attorneys at that experience level.
22 years on the New York bar
Years since admission, all currently-active NY attorneys
22 Top 49% higher than 51% of 284,296 active NY attorneys
Each bar is a band; taller bars hold more active NY attorneys. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NY Office of Court Administration, Attorney Registration · May 2026
The 2004 admission class today
Of the 8,407 attorneys admitted to the New York bar in 2004, 65.8% are still "Currently registered" today, below the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 4242731
- Year Admitted
- 2004 (22 yrs · senior)
- Judicial Department
- 3
- Next Registration
- Sep 2026
Location & Contact
- Company
- Sunflower Law Office
- City
- Tokyo 107-0052
- Phone
- +81 3 6438 1842
Education
UNIVERSITY OF PENNSYLVANIA; INSTITUTE OF JAPAN
Status Distribution Across the New York Bar
Mariko Hirose's current status, "Currently registered", places this attorney in the 66.2% of the 429,620-attorney New York register currently marked active.
Full statewide breakdown & source note
Source: NY Office of Court Administration, Attorney Registrations. Status counts reflect the latest reporting cycle. Bar status confirms registration only; it does not imply competence, specialty fit, or freedom from complaints.
Other Attorneys at Sunflower Law Office
View all attorneys at this firm →Verify This Attorney
Verify on NY Courts Attorney SearchBefore you rely on this record
Mariko Hirose's "Currently registered" listing confirms bar standing only, it is a registration fact to verify, not a verdict on quality or competence.
Frequently Asked Questions
Where is Mariko Hirose licensed?
Mariko Hirose is licensed to practice law in New York.
When was Mariko Hirose admitted to the bar?
Mariko Hirose was admitted to the bar in 2004.
Where did Mariko Hirose go to law school?
Mariko Hirose attended UNIVERSITY OF PENNSYLVANIA; INSTITUTE OF JAPAN.
What company does Mariko Hirose work for?
Mariko Hirose is associated with Sunflower Law Office in Tokyo 107-0052.
Is Mariko Hirose in good standing?
Yes, Mariko Hirose holds active bar status ("Currently registered").
Sourced from the NY Office of Court Administration, informational only, not legal advice. Full disclosure.
Read our methodology - how this data is sourced, computed, and verified.