New York attorney record · Judicial Dept 2
William Harris Cooper
George Washington University alumna, admitted to the New York bar in 1991, registered office in White Plains, NY. Decades of status, address, and registration history on this record come straight from the NY Office of Court Administration.
- 1991
- Admitted
- 35
- Years in bar
- 2381440
- NY reg #
The record in one line
With 35 years on the register since a 1991 admission, William Harris Cooper ranks among the New York bar's most senior active practitioners, longer-tenured than 79% of the currently-active bar.
- 35 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #1020 of 3,330
- by tenure in White Plains office peers
- Law school
- George Washington University
Data updated September 2026
What this profile tells you
Bar status & tenure
Registration 2381440 with the New York bar authority has long belonged to William Harris Cooper, a veteran practitioner still in active good standing. Registration is recorded within Judicial Department 2, the appellate division overseeing this attorney's home district.
Practice context & education
Practice address is listed under Marvin A. Cooper, PC, located in White Plains, NY (Westchester County), ZIP 10601. Educational background: GEORGE WASHINGTON UNIVERSITY.
State context & due diligence
After 35 years on the register, William Harris Cooper still falls within the New York bar's active cohort, a share of the register detailed further below.
Experience vs. the active New York bar
Few active New York attorneys match William Harris Cooper's 35 years since admission in 1991.
35 years on the New York bar
Years since admission, all currently-active NY attorneys
35 Top 21% higher than 79% of 290,787 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 · September 2026
Tenure among White Plains, NY office peers
William Harris Cooper is earlier in the White Plains, NY office cohort than most peers: local tenure rank #1,020 of 3,330 (31st percentile). See the White Plains attorney directory .
- Local rank
- #1,020
- City cohort
- 3,330
- Local percentile
- 31st
- Admitted
- 1991
Nearest tenure peers in White Plains
- Kenneth P. Addeo admitted 1991 · 35 yr
- Tami Sue Altschiller admitted 1991 · 35 yr
- Paul G. Amicucci admitted 1991 · 35 yr
- Jonathan Alan Bath admitted 1991 · 35 yr
How local rank is computed
Rank uses years since NY-bar admission among non-deceased registry rows that list the same office city and state, a local placement, not a statewide claim. Source: NY Office of Court Administration Attorney Registration · as of September 2026. Derived local rank, not published upstream.
How William compares to fellow George Washington University alumni
Among the 1,050 George Washington University graduates in the New York register, William Harris Cooper is longer-tenured than 96%.
35 years vs. George Washington University alumni
Years since admission - 1,050 NY-registered alumni of this school
35 Top 4% higher than 96% of 1,050 fellow alumni
Each bar is a band; taller bars hold more fellow alumni. 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 · September 2026
The 1991 admission class today
Of the 6,456 attorneys admitted to the New York bar in 1991, 75.3% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 2381440
- Year Admitted
- 1991 (35 yrs · veteran)
- Judicial Department
- 2
- Next Registration
- Dec 2027
Location & Contact
- Company
- Marvin A. Cooper, PC
- City
- White Plains, NY
- County
- Westchester
- ZIP Code
- 10601
- Phone
- (914) 428-9200
Education
GEORGE WASHINGTON UNIVERSITY
Status Distribution Across the New York Bar
William Harris Cooper's current status, "Currently registered", places this attorney in the 67.2% of the 432,625-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.
Near-tenure George Washington University alumni
Fellow alumni on the NY register whose admission year is closest to 1991 (excluding same-firm colleagues above).
Same admission year (1991), other cities
NY-registered attorneys admitted in 1991 whose listed office city differs from White Plains, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for William Harris Cooper: closest NY bar admission year outside NY, and closest out-of-state office cities by how many NY-registered attorneys they list (~3,331 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~1991)
Counts come from the NY State Office of Court Administration registration extract; peers are not a competence or practice-area ranking.
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Compare attorneys →Before you rely on this record
William Harris Cooper'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 William Cooper licensed?
William Cooper is licensed to practice law in New York.
When was William Harris Cooper admitted to the bar?
William Harris Cooper's admission to the New York bar dates back to 1991.
Where did William Harris Cooper go to law school?
William Harris Cooper attended GEORGE WASHINGTON UNIVERSITY.
What company does William Harris Cooper work for?
William Harris Cooper is associated with Marvin A. Cooper, PC in White Plains, NY.
Is William Harris Cooper in good standing?
Yes, William Harris Cooper holds active bar status ("Currently registered").
Cite this page & disclosure
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.