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

Brendan Alan Klaassen

Currently registered

Brendan Alan Klaassen is an attorney admitted to the New York State Bar in 2018, 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 number5590781
Bar statusCurrently registered
Year admitted2018
Judicial departmentDepartment 1
Law schoolDuke University School of Law
Practice cityNew York, NY
CountyNew York
Firm / organizationCurtis, Mallet-Prevost, Colt & Mosle Llp
Office address101 Park Ave Fl 35, New York, NY, 10178
Phone(212) 696-6110
Next registration dueSep 2026

About Curtis, Mallet-Prevost, Colt & Mosle LLP

Curtis, Mallet-Prevost, Colt & Mosle LLP is a New York limited liability partnership and international law firm, founded in New York City in 1830. The firm says it counsels clients on transnational transactions and multi-jurisdictional disputes, and that its clients include governments and state-owned companies, multinational corporations, financial institutions, money managers, privately held businesses and individuals. It reports 19 offices across five continents.

Practice areas of Curtis, Mallet-Prevost, Colt & Mosle LLP:

Antitrust & Competition Arbitration & Mediation Banking & Finance Bankruptcy & Restructuring Commercial Litigation Corporate & M&A Energy & Infrastructure Employment & Labor Entertainment & Media Environmental Immigration Intellectual Property Real Estate Securities & Capital Markets Tax Trusts & Estates

These are the practice areas the organization describes on its website. They are not a statement about Brendan Alan Klaassen’s own practice or any specialty certification.

View the Curtis, Mallet-Prevost, Colt & Mosle LLP profile and its 63 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.

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Bar status can change at any time. For the authoritative, real-time status of Brendan Alan Klaassen, 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.

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