Sean W. Plat

Year Called to the Bar: 1997 (ON)

Contact: (519) 780-4629
Email: [email protected]

Experienced Family Law Lawyer in Guelph, Ontario

With more than 25 years of dedicated experience in family law, Sean W. Plat is recognized for his deep expertise in handling complex property and spousal/child support cases, as well as marriage contracts and cohabitation agreements. Known for his practical and empathetic approach, Sean effectively guides clients through high-conflict parenting disputes, always aiming for resolutions that serve the best interests of families.

Sean offers comprehensive legal services through various methods, including traditional negotiation and litigation. Beyond the courtroom, he is highly skilled in alternative dispute resolution, providing services in mediation, arbitration, and collaborative family law. Sean has completed professional mediator training and is committed to helping parties resolve their family law issues outside of court, utilizing a constructive and knowledgeable approach for more amicable outcomes.

Born and raised in Guelph, Sean earned his undergraduate degree at the University of Guelph before graduating from Queen’s University Faculty of Law. He began his legal career at Kearns McKinnon in 1998, and following the firm’s merger with Miller Thomson LLP, became a partner for 16 years. In 2022, Sean co-founded Plat Simionati LLP, combining extensive experience and client-focused service to provide practical and efficient representation to clients across Ontario.

Areas of Expertise

Family Law
Complex Property and Spousal/Child Support Cases
Marriage Contracts and Cohabitation Agreements
Parenting and High-Conflict Parenting Cases
Mediation, Arbitration, and Collaborative Family Law
Alternative Dispute Resolution

Professional Approach

Sean is committed to delivering practical, resolution-oriented legal advice tailored to each client’s unique situation. Whether through traditional litigation or innovative dispute resolution, he brings deep experience, compassion, and a results-driven mindset to every case.

Contact Sean W. Plat today for skilled and compassionate family law representation in Guelph and across Ontario.

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