Grant Petrosyan

Grant Petrosyan is an associate in the New York office of Constantine Cannon. His practice is focused on antitrust litigation and counseling, and commercial litigation in both state and federal courts. Grant is also active in the firm’s e-discovery practice.

Since joining the firm in 2015, Grant has represented clients across various industries including payments, health care, aviation, and retail. He has experience in both plaintiff- and defense-side antitrust and commercial matters.

Grant’s recent litigation experience includes:

• Representation of 65 of the largest retailers in an antitrust case against payment card networks and banks;
• Representation of a Japanese airline in a price-fixing antitrust matter;
• Representation of a putative class against a large hospital system concerning tying arrangements and anti-steering provisions;
• Representation of three whistleblowers in a federal False Claims Act case alleging a military defense contractor violated international sanctions; and
• Representation of the State of New York in several lawsuits in federal and state courts challenging certain regulations promulgated by the New York State Department of Health.

Grant graduated from Brooklyn Law School in 2014 and received a degree in Economics from Fordham University in 2011. During law school, he interned at the Federal Trade Commission and completed two judicial internships at the Kings County Supreme Court in New York and the Bergen County Superior Court in New Jersey.

Grant is admitted to practice in New York and New Jersey. He is a member of the American Bar Association, and the Federal Bar Council. Grant is the Secretary of the Armenian Bar Association a member of its Board of Governors and the Chair if its NY-NJ-CT Chapter. As part of his pro bono work for the Armenian Bar Association, Grant is also a member of the Bar’s Working Group on the safeguarding of Armenian cultural and religious heritage in Nagorno Karabakh (Artsakh) in the aftermath of a 44-day war with Azerbaijan in 2020. As part of that group, he has conducted research on issues related to cultural preservation, drafted reports to UN Special Rapporteurs, collected information and photos documenting destruction of cultural and religious heritage, coordinated and worked with governmental authorities, members of the Armenian Apostolic Church, professors in art and archeology, and other non-governmental organizations on writing reports and letters and organizing conferences to raise awareness of issues concerning preservation of cultural and religious heritage in the Nagorno Karabakh region.

Grant has published the following articles:

• Will Apple’s Crackdown on Third-Party Apps Continue With iOS 13?, Antitrust Today, May 16, 2019
• The Airbus and Boeing Duopoly, Competition Policy Journal, April 23, 2019
• NCAA May Have Lost Antitrust Case to Student Athletes, But How Much Did It Really Lose?, Concurrences, March 21, 2019
• DOJ Clarifies How it Analyzes No-Poach Agreements, Antitrust Today, March 15, 2019
• NCAA May Have Lost Antitrust Case to Student-Athletes, But How Much Did It Really Lose?, Antitrust Today, March 13, 2019

EDUCATION

J.D., Brooklyn Law School, 2014

B.A., Fordham University, Economics, 2011

Featured posts

• President Biden Signs Sweeping Executive Order to Promote Competition (July 19, 2021)
• New York’s Pending Antitrust Bill – What It Would Mean for Companies That Have Market Shares in Excess of 30-40% (with Taline Sahakian and Robert L. Begleiter) (July 30, 2021)