Massachusetts General Laws
Article 9 - Secured Transactions
Section 9-310 - When Filing Required to Perfect Security Interest or Agricultural Lien; Security Interests and Agricultural Liens to Which Filing Provisions Do Not Apply

Section 9–310. (a) General rule: perfection by filing. Except as otherwise provided in subsection (b) and Section 9–312(b), a financing statement must be filed to perfect all security interests and agricultural liens.
(b) Exceptions: filing not necessary. The filing of a financing statement is not necessary to perfect a security interest:
(1) that is perfected under Section 9–308(d), (e), (f), or (g);
(2) that is perfected under Section 9–309 when it attaches;
(3) in property subject to a statute, regulation, or treaty described in Section 9–311(a);
(4) in goods in possession of a bailee which is perfected under Section 9–312(d)(1) or (2);
(5) in certificated securities, documents, goods, or instruments which is perfected without filing, control or possession under Section 9–312(e), (f), or (g);
(6) in collateral in the secured party's possession under Section 9–313;
(7) in a certificated security which is perfected by delivery of the security certificate to the secured party under Section 9–313;
(8) in deposit accounts, electronic chattel paper, electronic documents, investment property, or letter-of-credit rights which is perfected by control under Section 9–314;
(9) in proceeds which is perfected under Section 9–315; or
(10) that is perfected under Section 9–316.
(c) Assignment of perfected security interest. If a secured party assigns a perfected security interest or agricultural lien, a filing under this article is not required to continue the perfected status of the security interest against creditors of and transferees from the original debtor.

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