§12A-9-302.

§12A-9-302.
   
   When Filing is Required to Perfect Security Interest - Security
   Interests to Which Filing Provisions of This Article Do Not Apply.
   
   (1) A financing statement must be filed to perfect all security
   interests except the following:
   
   (a) A security interest in collateral in possession of the secured
   party pursuant to the provisions of Section 9-305 of this title; or
   
   (b) A security interest temporarily perfected in instruments,
   certificated securities, or documents without delivery pursuant to the
   provisions of Section 9-304 of this title or in proceeds for a ten-day
   period pursuant to the provisions of Section 9-306 of this title; or
   
   (c) A security interest created by an assignment of a beneficial
   interest in a trust or a decedent's estate; or
   
   (d) A purchase money security interest in consumer goods except for a
   vehicle as provided in paragraph (i) of this subsection; or
   
   (e) An assignment of accounts which does not transfer, alone or in
   conjunction with other assignments to the same assignee, a significant
   part of the outstanding accounts of the assignor; or
   
   (f) A security interest of a collecting bank, pursuant to the
   provisions of Section 4-210 of this title or arising according to the
   articles on Sales and Leases as stated in Section 9-113 of this title
   or covered in subsection (3) of this section; or
   
   (g) An assignment for the benefit of all the creditors of the
   transferor, and subsequent transfers by the assignee thereunder; or
   
   (h) A security interest in investment property which is perfected
   without filing pursuant to the provisions of Section 9-115 or 9-116 of
   this title; or
   
   (i) A security interest in a vehicle as defined in Section 1110 of
   Title 47 of the Oklahoma Statutes for which a certificate of title may
   be properly issued by the Oklahoma Tax Commission, except as otherwise
   provided for in Section 1110 of Title 47 of the Oklahoma Statutes; or
   
   (j) A security interest in a certificate of deposit. Such a security
   interest is perfected:
   
   (i) when the certificate of deposit is an instrument, by the secured
   party taking possession of the certificate of deposit; and
   
   (ii) when the certificate of deposit is a general intangible, by
   written notice to the issuer of the certificate of deposit by the
   secured party that reasonably identifies the certificate of deposit
   and provides reasonable proof of the claimed security interest.
   Notification to the issuer of a certificate of deposit by a secured
   party of the secured party's security interest in the certificate of
   deposit imposes no obligation on the issuer to the secured party,
   including any obligation to acknowledge the notice. An issuer by
   written acknowledgment of a notice from a secured party may assume an
   obligation to the secured party in the circumstances and under the
   conditions specified in the acknowledgment.
   
   (2) If a secured party assigns a perfected security interest, no
   filing as provided for in this article is required to continue the
   perfected status of the security interest against creditors of and
   transferees from the original debtor.
   
   (3) The filing of a financing statement otherwise required by this
   article is not necessary or effective to perfect a security interest
   in property subject to:
   
   (a) a statute or treaty of the United States that provides for a
   national or international registration or a national or international
   certificate of title or that specifies a place of filing different
   from that specified in this article for filing of the security
   interest; or
   
   (b) a statute of this state that provides for central filing of, or
   that requires indication or delivery for indication on a certificate
   of title of, any security interests in the property, but, during any
   period in which collateral is inventory held for sale by a person who
   is in the business of selling goods of that kind, the filing
   provisions of Sections 9-401 et seq. of this title apply to a security
   interest in that collateral created by him as debtor; or
   
   (c) a certificate of title statute of another jurisdiction pursuant to
   the provisions of which delivery for indication or indication of a
   security interest on the certificate is required as a condition of
   perfection as stated in subsection (2) of Section 9-103.1 of this
   title.
   
   (4) Compliance with a statute or treaty described in subsection (3) of
   this section is equivalent to the filing of a financing statement
   pursuant to the provisions of this article, and a security interest in
   property subject to the statute or treaty can be perfected only by
   compliance with such statute or treaty except as provided for in
   Section 9-103.1 of this title on multiple state transactions. Duration
   and renewal of perfection of a security interest perfected by
   compliance with the statute or treaty are governed by the provisions
   of the statute or treaty, but, in other respects, the security
   interest is subject to the provisions of this article.