[26] In Ontario, when a party claims a security interest in personal property to satisfy payment or performance of an obligation, the court must ask whether the PPSA applies: subject to limited exceptions, the application of that Act is pervasive. In Bank of Montreal v. Innovation Credit Union, 2010 SCC 47 (CanLII), 2010 SCC 47, [2010] 3 S.C.R. 3, this Court noted that the provisions of Saskatchewan's Personal Property Security Act, 1993, S.S. 1993, c. P-6.2, extend 'to almost anything which serves the function of a security interest' (para. 18). The same is true in Ontario. Section 2 of the PPSA reads in part as follows:
2. Subject to subsection 4(1), this Act applies to,
(a) every transaction without regard to its form and without regard to the person who has title to the collateral that in substance creates a security interest including, without limiting the foregoing,
(i) a chattel mortgage, conditional sale, equipment trust, debenture, floating charge, pledge, trust indenture or trust receipt . . .
[27] A 'security interest' is defined broadly as 'an interest in personal property that secures payment or performance of an obligation', and the definition of 'personal property' that applied at the relevant time included 'intangibles' and 'securities' (PPSA, s.1(1)). The PPSA employs 'a functional approach to determining what security interests are covered by its provisions' (Bank of Montreal, at para. 18). When it applies, it renders irrelevant the distinctions between the wide variety of instruments which existed at common law and in equity for taking a security interest in another person's property.
[28] With this in mind, I will now consider the nature of the interests of the parties to this appeal in the disputed funds.
A. Interest of i Trade in the Disputed Funds
[29] In i Trade's opinion, it has a prima facie right, as set out in B.M.P., Simms and other cases, to recover monies paid under a mistake of fact. This argument cannot succeed. The principles respecting the recovery of mistaken payments apply as between payor and payee. BMO is not a payee, so those principles are inapplicable here. Rather, the source of i Trade's claim to the disputed funds lies in Belobaba J.'s judgment, and more specifically in the order in which he authorized i Trade to follow and trace the assets acquired with funds it had advanced to Webworx. What i Trade now seeks to do is to recover the proceeds of sale of the shares credited to the investment account on the basis that they were impressed with a constructive trust or were subject to an equitable lien.
[30] Regardless of whether i Trade elects to take the constructive trust or the equitable lien route to assert its interest, the PPSA does not apply to those rights. This is because i Trade acquired them as a result of Belobaba J.'s judgment granting a constructive trust or an equitable lien. The rights thus resulted from a court order, not from a 'transaction . . . that in substance creates a security interest' (PPSA, s. 2). In addition, the creation of the rights was not consensual: R. H. McLaren, Secured Transactions in Personal Property in Canada (2nd ed. (loose-leaf)), at s1.02; F. Bennett, Bennett on the PPSA (Ontario) (3rd ed. 2006), at p. 15; R. C. C. Cuming, C. Walsh and R. J. Wood, Personal Property Security Law (2005), at pp. 85 and 96-97; J. S. Ziegel and D. L. Denomme, The Ontario Personal Property Security Act: Commentary and Analysis (2nd ed. 2000), at pp. 71-72.