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

Dunning Vallejo & MacDonald LLP

9 attorneys in the New York State Bar registry list this organization as their firm or employer.

About Dunning Vallejo & MacDonald LLP

Dunning Vallejo & MacDonald LLP is a New York boutique law firm whose stated focus is domestic and international dispute resolution along with business and corporate transactions. The firm was established in 2019 to pair the depth of a larger practice with a more personal approach, and its partners came from large US and international firms before founding it.

Its work spans commercial litigation, international and investor-state arbitration, third-party litigation funding, M&A and other transactions, project finance, employment matters and tax. Several attorneys are multilingual, providing advice in English, Spanish, French and Portuguese. The firm operates from a single office at 1350 Broadway in Manhattan, New York City, and its website lists the same address and a main telephone line. Its employment work includes litigation over discrimination and wage claims as well as advice on non-compete agreements.

TypeLaw firm
New York officesNew York City (Manhattan)
Phone+1 646-688-2765
Websitedvmlaw.com
Registered NY attorneys9

Practice areas

Areas of work that Dunning Vallejo & MacDonald LLP describes on its own website. They describe the organization as a whole, not the practice of any individual attorney listed below.

Commercial Litigation Arbitration & Mediation Corporate & M&A Banking & Finance Employment & Labor Tax

Organization profile based on its official website and public sources (reviewed October 30, 2026). Attorney list from the New York State Unified Court System registration data. Not affiliated with Dunning Vallejo & MacDonald LLP.

Registered attorneys

Brian Dunning Admitted 1991 · New York, NY Currently registered James Montgomery Admitted 1999 · New York, NY Currently registered Robert Macdonald Admitted 2001 · New York, NY Currently registered Andres Arnaldos Montaner Admitted 2009 · New York, NY Currently registered Della Hill Admitted 2013 · New York, NY Currently registered Michael Cooper Admitted 2022 · New York, NY Currently registered Marta Gonzalez-Ruano Calles Admitted 2023 · New York, NY Currently registered Catherine Zimmermann Admitted 2024 · New York, NY Currently registered Antoine Gatipon-Bachette Admitted 2024 · New York, NY Currently registered

Registration status can change at any time. Confirm any attorney's current status through the official New York Attorney Search.

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