Margaret O’Sullivan is the principal of the Toronto-based trusts and estates boutique law firm O’Sullivan Estate Lawyers. She practices exclusively in the areas of estate planning, estate litigation, advising executors, trustees and beneficiaries, and administration of trusts and estates.
She is recognized in Euromoney’s Guide to the World’s Leading Trust and Estate Practitioners (2009 - 2010), in The Canadian Legal LEXPERT Directory 2011 as a leading practitioner in estate planning, and in The Best Lawyers in Canada 2011. Prior to establishing an independent practice, Margaret was a partner in the Toronto office of the national Canadian law firm Stikeman Elliott, where she directed its trusts and estates practice. She has practiced exclusively in the area of trusts and estates since 1983.
O’Sullivan Estate Lawyers is named one of Canada’s “Top 5 Trusts & Estates Law Boutiques” by Canadian Lawyer.
An author and editor of books and newsletters, Margaret has written extensively in the area of trusts, estate planning, estate administration, and estate litigation. She has been a frequent guest speaker, writer, and conference chairperson for various professional organizations on the subject of trusts and estates, including for the Society of Trust and Estate Practitioners, the Canadian Bar Association, The Law Society of Upper Canada, The International Bar Association, the Canadian Tax Foundation and various private conference sponsors.
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