Section 409.322 - Priorities among conflicting security interests in and agricultural liens on same collateral(1) GENERAL PRIORITY RULES. Except as otherwise provided in this section, priority among conflicting security interests and agricultural liens in the same collateral is determined according to the following rules: (a) Conflicting perfected security interests and agricultural liens rank according to priority in time of filing or perfection. Priority dates from the earlier of the time a filing covering the collateral is first made or the security interest or agricultural lien is first perfected, if there is no period thereafter when there is neither filing nor perfection.(b) A perfected security interest or agricultural lien has priority over a conflicting unperfected security interest or agricultural lien.(c) The first security interest or agricultural lien to attach or become effective has priority if conflicting security interests and agricultural liens are unperfected.(2) TIME OF PERFECTION: PROCEEDS AND SUPPORTING OBLIGATIONS. For the purposes of sub. (1) (a): (a) The time of filing or perfection as to a security interest in collateral is also the time of filing or perfection as to a security interest in proceeds; and(b) The time of filing or perfection as to a security interest in collateral supported by a supporting obligation is also the time of filing or perfection as to a security interest in the supporting obligation.(3) SPECIAL PRIORITY RULES: PROCEEDS AND SUPPORTING OBLIGATIONS. Except as otherwise provided in sub. (6), a security interest in collateral which qualifies for priority over a conflicting security interest under s. 409.327 , 409.328 , 409.329 , 409.330 , or 409.331 also has priority over a conflicting security interest in: (a) Any supporting obligation for the collateral; and(b) Proceeds of the collateral if: 1. The security interest in proceeds is perfected;2. The proceeds are cash proceeds or of the same type as the collateral; and3. In the case of proceeds that are proceeds of proceeds, all intervening proceeds are cash proceeds, proceeds of the same type as the collateral, or an account relating to the collateral.(4) FIRST-TO-FILE PRIORITY RULE FOR CERTAIN COLLATERAL. Subject to sub. (5) and except as otherwise provided in sub. (6), if a security interest in chattel paper, deposit accounts, negotiable documents, instruments, investment property, or letter-of-credit rights is perfected by a method other than filing, conflicting perfected security interests in proceeds of the collateral rank according to priority in time of filing.(5) APPLICABILITY OF SUB. (4). Subsection (4) applies only if the proceeds of the collateral are not cash proceeds, chattel paper, negotiable documents, instruments, investment property, or letter-of-credit rights.(6) LIMITATIONS ON SUBS. (1) TO (5). Subsections (1) to (5) are subject to: (a) Subsection (7) and the other provisions of this subchapter;(b) Section 404.210 with respect to a security interest of a collecting bank;(c) Section 405.118 with respect to a security interest of an issuer or nominated person; and(d) Section 409.110 with respect to a security interest arising under ch. 402 or 411.(7) PRIORITY UNDER AGRICULTURAL LIEN STATUTE. A perfected agricultural lien on collateral has priority over a conflicting security interest in or agricultural lien on the same collateral if the statute creating the agricultural lien so provides.The above annotated materials cite to the pre-2001 Wis. Act 10 version of ch. 409.
A bank with a security interest perfected by filing a financing statements had priority over a chattel mortgage that was filed almost 2 years after the bank filed its financing statements, even though the bank subsequently refiled a financing statement. Burlington National Bank v. Strauss, 50 Wis. 2d 270, 184 N.W.2d 122 (1971). A seller of goods on credit must perfect its claim to priority by filing the agreement and financing statements. House of Stainless, Inc. v. Marshall & Ilsley Bank, 75 Wis. 2d 264, 249 N.W.2d 561 (1977). A lien creditor has priority over an unperfected security interest. Whether the lien creditor has knowledge of the security is immaterial. Muggli Dental Studio v. Taylor, 142 Wis. 2d 696, 419 N.W.2d 322 (Ct. App. 1987).