Okla. Stat. tit. 16, § 16-68: Abolition of doctrine of constructive possession

The doctrine of constructive possession is abolished only

insofar as it applies to the Simplification of Land Titles Act,

Section 61 et seq. of Title 16 of the Oklahoma Statutes. Any claims

based upon constructive possession before the effective date of this

act shall be extinguished unless a notice of the claim is filed with

the county clerk of the county where the land or interest is located

within one (1) year from the effective date of this act. The notice

of the claim shall set forth basis thereof and specifically refer to

this section.