LOLG Welcomes Newest Partner: John Carlo Mastrangelo

January 5, 2026

John Carlo has a broad litigation practice with a particular focus in corporate commercial litigation and public law. He has significant subject matter experience in multiple industries including telecommunications, energy, and real estate.

John Carlo has played pivotal roles in numerous significant litigation matters including a precedent-setting CRTC appeal, a First Nations historic Treaty claim, and the largest contested merger in Canadian history. He has appeared at all levels of court in Ontario before the national Competition Tribunal, and the Supreme Court of Canada.

Congratulations John Carlo!