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 word "partner" denotes a member of Constantine Cannon LLP, or an employee or consultant with equivalent standing and qualifications. The professional rules applicable to the firm are available at the SRA website at