New York attorney record · Judicial Dept 3
Michael Patrick O'Brien
Northwestern Univ alumna, admitted to the New York bar in 1999, registered office in Chicago, IL. Decades of status, address, and registration history on this record come straight from the NY Office of Court Administration.
- 1999
- Admitted
- 27
- Years in bar
- 2970986
- NY reg #
The record in one line
With 27 years on the register since a 1999 admission, Michael Patrick O'Brien ranks among the New York bar's most senior active practitioners, longer-tenured than 62% of the currently-active bar.
- 27 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #421 of 2,245
- by tenure in Chicago office peers
- Law school
- Northwestern Univ
Data updated September 2026
What this profile tells you
Bar status & tenure
Registration 2970986 with the New York bar authority has long belonged to Michael Patrick O'Brien, a veteran practitioner still in active 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 Sheppard Mullin, located in Chicago, IL, ZIP 60654. 5 other attorneys share this firm affiliation in the registry. Educational background: NORTHWESTERN UNIV.
State context & due diligence
After 27 years on the register, Michael Patrick O'Brien 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 Michael Patrick O'Brien's 27 years since admission in 1999.
27 years on the New York bar
Years since admission, all currently-active NY attorneys
27 Top 38% higher than 62% 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 Chicago, IL office peers
Michael Patrick O'Brien is earlier in the Chicago, IL office cohort than most peers: local tenure rank #421 of 2,245 (19th percentile). See the Chicago attorney directory .
- Local rank
- #421
- City cohort
- 2,245
- Local percentile
- 19th
- Admitted
- 1999
Nearest tenure peers in Chicago
- Rachel Chong Ahn admitted 1999 · 27 yr
- Hyung Joon Bak admitted 1999 · 27 yr
- Gregory Abbott Bedell admitted 1999 · 27 yr
- Karen Delores Bielarz admitted 1999 · 27 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 Michael compares to fellow Northwestern Univ alumni
Among the 59 Northwestern Univ graduates in the New York register, Michael Patrick O'Brien is longer-tenured than 0%.
27 years vs. Northwestern Univ alumni
Years since admission - 59 NY-registered alumni of this school
27 Top 100% higher than 0% of 59 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 1999 admission class today
Of the 7,628 attorneys admitted to the New York bar in 1999, 81.9% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 2970986
- Year Admitted
- 1999 (27 yrs · veteran)
- Judicial Department
- 3
- Next Registration
- Oct 2027
Location & Contact
- Company
- Sheppard Mullin
- City
- Chicago, IL
- ZIP Code
- 60654
- Phone
- (312) 499-6314
Education
NORTHWESTERN UNIV
Status Distribution Across the New York Bar
Michael Patrick O'Brien'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.
Same firm affiliation: Sheppard Mullin
Other NY-registered attorneys who share this firm name on the OCA register (not a geographic peer set).
Near-tenure Northwestern Univ alumni
Fellow alumni on the NY register whose admission year is closest to 1999 (excluding same-firm colleagues above).
Same admission year (1999), other cities
NY-registered attorneys admitted in 1999 whose listed office city differs from Chicago, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for Michael Patrick O'Brien: closest NY bar admission year outside IL, and closest out-of-state office cities by how many NY-registered attorneys they list (~2,246 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~1999)
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
Michael Patrick O'Brien'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 Michael O'Brien licensed?
Michael O'Brien is licensed to practice law in New York.
When was Michael Patrick O'Brien admitted to the bar?
Michael Patrick O'Brien's admission to the New York bar dates back to 1999.
Where did Michael Patrick O'Brien go to law school?
Michael Patrick O'Brien attended NORTHWESTERN UNIV.
What company does Michael Patrick O'Brien work for?
Michael Patrick O'Brien is associated with Sheppard Mullin in Chicago, IL.
Is Michael Patrick O'Brien in good standing?
Yes, Michael Patrick O'Brien 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.