Maryland Code, Commercial Law § 9-109

(1) A transaction, regardless of its form, that creates a security interest in personal property or fixtures by contract;

(2) An agricultural lien;

(3) A sale of accounts, chattel paper, payment intangibles, or promissory notes;

(4) A consignment;

(5) A security interest arising under § 2-401, § 2-505, § 2-711(3), or § 2A-508(5) of this article, as provided in § 9-110; and

(6) A security interest arising under § 4-210 or § 5-118 of this article.

(1) A statute, regulation, or treaty of the United States preempts this title;

(2) Another statute of this State expressly governs the creation, perfection, priority, or enforcement of a security interest created by this State or a governmental unit of this State;

(3) A statute of another state, a foreign country, or a governmental unit of another state or a foreign country, other than a statute generally applicable to security interests, expressly governs creation, perfection, priority, or enforcement of a security interest created by the state, country, or governmental unit; or

(4) The rights of a transferee beneficiary or nominated person under a letter of credit are independent and superior under § 5-114 of this article.

(1) A landlord's lien, other than an agricultural lien;

(2) A lien, other than an agricultural lien, given by statute or other rule of law for services or materials, but § 9-333 applies with respect to priority of the lien;

(3) An assignment of a claim for wages, salary, or other compensation of an employee;

(4) A sale of accounts, chattel paper, payment intangibles, or promissory notes as part of a sale of the business out of which they arose;

(5) An assignment of accounts, chattel paper, payment intangibles, or promissory notes which is for the purpose of collection only;

(6) An assignment of a right to payment under a contract to an assignee that is also obligated to perform under the contract;

(7) An assignment of a single account, payment intangible, or promissory note to an assignee in full or partial satisfaction of a preexisting indebtedness;

(8) A transfer of an interest in or an assignment of a claim under a policy of insurance, other than an assignment by or to a health-care provider of a health-care-insurance receivable and any subsequent assignment of the right to payment, but §§ 9-315 and 9-322 apply with respect to proceeds and priorities in proceeds;

(9) An assignment of a right represented by a judgment, other than a judgment taken on a right to payment that was collateral;

(10) A right of recoupment or set-off, but:

(11) The creation or transfer of an interest in or lien on real property, including a lease or rents thereunder, except to the extent that provision is made for:

(12) An assignment of a claim arising in tort, other than a commercial tort claim, but §§ 9-315 and 9-322 apply with respect to proceeds and priorities in proceeds; or

(13) An assignment of a deposit account in a consumer transaction, but §§ 9-315 and 9-322 apply with respect to proceeds and priorities in proceeds.