Okla. Stat. tit. 12A, § 12A-1-9-407

interest in leasehold interest or in lessor’s residual interest.

RESTRICTIONS ON CREATION OR ENFORCEMENT

OF SECURITY INTEREST IN LEASEHOLD INTEREST

OR IN LESSOR’S RESIDUAL INTEREST

(a) Except as otherwise provided in subsection (b) of this

section, a term in a lease agreement is ineffective to the extent

that it:

(1) prohibits, restricts, or requires the consent of a party to

the lease to the assignment or transfer of or the creation,

attachment, perfection, or enforcement of a security interest in, an

interest of a party under the lease contract or in the lessor’s

residual interest in the goods; or

Oklahoma Statutes - Title 12A. Uniform Commercial Code Page 102

(2) provides that the assignment or transfer or the creation,

attachment, perfection, or enforcement of the security interest may

give rise to a default, breach, right of recoupment, claim, defense,

termination, right of termination, or remedy under the lease.

(b) Except as otherwise provided in paragraph (7) of Section

2A-303 of this title, a term described in paragraph (2) of

subsection (a) of this section is effective to the extent that there

is:

(1) a transfer by the lessee of the lessee’s right of

possession or use of the goods in violation of the term; or

(2) a delegation of a material performance of either party to

the lease contract in violation of the term.

(c) The creation, attachment, perfection, or enforcement of a

security interest in the lessor’s interest under the lease contract

or the lessor’s residual interest in the goods is not a transfer

that materially impairs the lessee’s prospect of obtaining return

performance or materially changes the duty of or materially

increases the burden or risk imposed on the lessee within the

purview of paragraph (4) of Section 2A-303 of this title unless, and

then only to the extent that, enforcement actually results in

delegation of material performance of the lessor.