Official NY OCA attorney registration data · Updated 2026 Methodology Discipline records

Jan Friedman Constantine

Currently registered

Jan Friedman Constantine is an attorney admitted to the New York State Bar in 1974, with a registered practice address in New York, New York. According to the New York Office of Court Administration, the current registration status on record is Currently registered.

Registration number1025808
Bar statusCurrently registered
Year admitted1974
Judicial departmentDepartment 2
Law schoolGeorge Washington University
Practice cityNew York, NY
CountyNew York
Firm / organizationConstantine Cannon Llc
Office address230 Park Ave Fl 17, New York, NY, 10169
Phone(212) 350-2770
Next registration dueJan 2028

About Constantine Cannon LLP

Constantine Cannon LLP is a law firm established in New York City in 1994. Its public materials focus on antitrust work and on representing whistleblowers, and they also describe commercial litigation, intellectual property and technology matters, government relations, and corporate compliance, monitoring, and investigations. The firm says it provides electronic discovery consulting and handles litigation and arbitration disputes for both plaintiffs and defendants.

Practice areas of Constantine Cannon LLP:

Antitrust & Competition Commercial Litigation Intellectual Property Government & Regulatory

These are the practice areas the organization describes on its website. They are not a statement about Jan Friedman Constantine’s own practice or any specialty certification.

View the Constantine Cannon LLP profile and its 22 registered attorneys →

Office location

Registered office address on file with the New York State Bar. Verify before visiting, as the address reflects the contact on record and may be a firm rather than a personal office.

Verify this record

Bar status can change at any time. For the authoritative, real-time status of Jan Friedman Constantine, confirm directly through the official New York Attorney Search using the registration number above. This record is republished from public New York State data and is provided for reference only — it is not legal advice and not an endorsement.

Other attorneys in New York

See all attorneys in New York, NY →

Other graduates of George Washington University

See all graduates of this school →

Helpful resources

Created by SeoFune