Ryan Thomas Gannon
On the New York attorney register since 2009 · office in Roseland, NJ
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 4711784
- Admitted
- 2009 · Third Department
- Status
- Currently registered
- Next registration
- Mar 2027
Ryan Thomas Gannon is currently registered on the New York attorney register file of Sep 29, 2026. Admitted in 2009 in the Third Department, with an office in Roseland, NJ; next registration due Mar 2027. The status is the same in all 3 files we hold.
What this status means on the register
On the register, “Currently registered” means Ryan Thomas Gannon has filed the biennial registration the court system requires; the next one is due in Mar 2027.
- 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
106 other attorneys list Marshall Dennehey or one of its other names as their employer on the register; 43 of them were admitted before 2009, and 16 of the 107 give an office in Roseland, NJ. The 5 whose admission is closest to 2009, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| Andrew Peter Campbell | 2008 | Currently registered |
| Erin Nicole Margolin | 2008 | Currently registered |
| Heather Michele Labombardi | 2009 | Currently registered |
| Adam Christopher Calvert | 2010 | Currently registered |
| Andra Paganie | 2010 | Currently registered |
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
Ryan Thomas Gannon studied at Seton Hall University School of Law (the register spells it “SETON HALL LAW”). 1,955 of its 6,262 living graduates on the register were admitted in the 2000s, as Ryan Thomas Gannon was.
- Same law school
- 6,262living graduates; 84.7% registered (current or due), against 87.1% overall
- Office in Roseland, NJ
- 685living registrants (outside New York State)
Of the 685 living registrants with an office in Roseland, NJ, 387 were admitted before 2009 and 277 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 Marshall Dennehey107 on the register, 43 of the others admitted before 2009; 16 of the 107 give an office in Roseland, NJ.
- Seton Hall University School of Law graduates on the register6,262 living, 84.7% registered.
- New York-admitted attorneys in Roseland, NJ685 living registrants give an office there.
- Admitted in 200910,203 people admitted in 2009 are on the register, 3,337 of them through the Third 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 Ryan Thomas Gannon’s standing, contact the Attorney Registration Unit of the NY Office of Court Administration (nycourts.gov/attorneys), or ask the Appellate Division, Third Department, which admitted Ryan Thomas Gannon in 2009. 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).