Sean W. Plat

Sean was called to the bar in 1997 and has been practicing exclusively in the area of family law for more than 26 years. He has expertise in complex property and spousal/child support cases, marriage contracts and cohabitation agreements, and he brings a practical yet empathic approach to high conflict parenting cases. His expertise extends to married and unmarried spouses and to the LGBTQ+ community.

Sean has successfully advanced matters in all levels of court in Ontario. In addition to resolving family law issues by way of traditional methods such as negotiation and/or litigation, he also has extensive experience in acting for clients in alternative dispute resolution methods including mediation, arbitration and collaborative family law. Sean has completed his training as a mediator and is able to offer his experience and skillset to parties who wish to resolve their issues outside of court with the assistance of a knowledgeable and effective mediator.

Sean was born and raised in the City of Guelph and attended law school at Queen’s University after obtaining his undergraduate degree at the University of Guelph. He joined Kearns McKinnon in 1998. Kearns McKinnon merged with Miller Thomson LLP in 2003, where Sean was a partner for 16 years. In 2022 Sean and Taryn founded Plat Simionati LLP with the goal of combining their strengths to provide their clients with strong, practical and efficient family law representation.