The moving parties sought to strike a will challenge brought by an estate trustee and her son concerning the validity of the deceased’s 2010 primary and secondary wills.
The estate trustee had administered aspects of the estate for over a year, including paying significant estate taxes, relying on the wills in dealings with third parties, and exercising authority as estate trustee.
The court held that her conduct created an assumption among the parties that the wills were valid and that others relied on that assumption to their detriment, particularly in relation to complex estate planning transactions and tax consequences arising from an estate freeze.
Applying the doctrines of estoppel by representation and estoppel by convention, the court concluded that the estate trustee was barred from challenging the wills.
The son’s parallel challenge was also struck because he lacked independent knowledge of the estate and acted as a proxy for the trustee.