New York attorney record · Judicial Dept 1
Mark Peter Kesslen
Case Western Reserve Univ alumna, admitted to the New York bar in 1990, registered office in Roseland, NJ. Decades of status, address, and registration history on this record come straight from the NY Office of Court Administration.
- 1990
- Admitted
- 36
- Years in bar
- 2324085
- NY reg #
The record in one line
With 36 years on the register since a 1990 admission, Mark Peter Kesslen ranks among the New York bar's most senior active practitioners, longer-tenured than 79% of the currently-active bar.
- 36 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #101 of 676
- by tenure in Roseland office peers
- Law school
- Case Western Reserve Univ
Data updated September 2026
What this profile tells you
Bar status & tenure
Registration 2324085 with the New York bar authority has long belonged to Mark Peter Kesslen, a veteran practitioner still in active good standing. Registration is recorded within Judicial Department 1, the appellate division overseeing this attorney's home district.
Practice context & education
Practice address is listed under Lowenstein Sandler LLP, located in Roseland, NJ, ZIP 07068. 5 other attorneys share this firm affiliation in the registry. Educational background: CASE WESTERN RESERVE UNIV.
State context & due diligence
After 36 years on the register, Mark Peter Kesslen 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 Mark Peter Kesslen's 36 years since admission in 1990.
36 years on the New York bar
Years since admission, all currently-active NY attorneys
36 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 Roseland, NJ office peers
Most of the 676 NY-registered attorneys in Roseland, NJ outrank Mark Peter Kesslen on tenure; this record sits at the 15th local percentile (rank #101). See the Roseland attorney directory .
- Local rank
- #101
- City cohort
- 676
- Local percentile
- 15th
- Admitted
- 1990
Nearest tenure peers in Roseland
- Charles M. Carella admitted 1990 · 36 yr
- James Edward Cecchi admitted 1990 · 36 yr
- Angelo Anthony Cuonzo admitted 1990 · 36 yr
- Dennis A. Durkin admitted 1990 · 36 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 Mark compares to fellow Case Western Reserve Univ alumni
Among the 138 Case Western Reserve Univ graduates in the New York register, Mark Peter Kesslen is longer-tenured than 30%.
36 years vs. Case Western Reserve Univ alumni
Years since admission - 138 NY-registered alumni of this school
36 Top 70% higher than 30% of 138 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 1990 admission class today
Of the 6,112 attorneys admitted to the New York bar in 1990, 56.3% are still "Currently registered" today, below the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 2324085
- Year Admitted
- 1990 (36 yrs · veteran)
- Judicial Department
- 1
- Next Registration
- Dec 2026
Location & Contact
- Company
- Lowenstein Sandler LLP
- City
- Roseland, NJ
- ZIP Code
- 07068
- Phone
- (973) 597-2330
Education
CASE WESTERN RESERVE UNIV
Status Distribution Across the New York Bar
Mark Peter Kesslen'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: Lowenstein Sandler LLP
Other NY-registered attorneys who share this firm name on the OCA register (not a geographic peer set).
Near-tenure Case Western Reserve Univ alumni
Fellow alumni on the NY register whose admission year is closest to 1990 (excluding same-firm colleagues above).
Same admission year (1990), other cities
NY-registered attorneys admitted in 1990 whose listed office city differs from Roseland, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for Mark Peter Kesslen: closest NY bar admission year outside NJ, and closest out-of-state office cities by how many NY-registered attorneys they list (~677 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~1990)
Counts come from the NY State Office of Court Administration registration extract; peers are not a competence or practice-area ranking.
Verify This Attorney
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Compare attorneys →Before you rely on this record
Mark Peter Kesslen'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 Mark Kesslen licensed?
Mark Kesslen is licensed to practice law in New York.
When was Mark Peter Kesslen admitted to the bar?
Mark Peter Kesslen's admission to the New York bar dates back to 1990.
Where did Mark Peter Kesslen go to law school?
Mark Peter Kesslen attended CASE WESTERN RESERVE UNIV.
What company does Mark Peter Kesslen work for?
Mark Peter Kesslen is associated with Lowenstein Sandler LLP in Roseland, NJ.
Is Mark Peter Kesslen in good standing?
Yes, Mark Peter Kesslen 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.