Grant Petrosyan

Staff Attorney
New York Office
T: 212.350.2745
F: 212.350.2701

Grant Petrosyan is an attorney in the New York office of Constantine Cannon. He represents clients in complex commercial litigation with a focus on antitrust matters. Grant also has extensive experience in various aspects of e-discovery.


J.D., Brooklyn Law School, 2014

B.A., Fordham University, Economics, 2011

Practice Groups


  • New York
  • New Jersey

The London office of Constantine Cannon is a separate and independent limited liability partnership registered in England and Wales (with registered number OC376384) with a registered office at 1 Paternoster Square, London EC4M 7DX. Constantine Cannon LLP in London is authorised and regulated by the Solicitors Regulation Authority. The professional rules applicable to the firm are available at the SRA website at