If authorized by the Commission as provided in Rule 6.10(2) of these Rules, a civil lawsuit shall be filed in the District Court no more than four (4) years after the date the violation of these Rules is alleged to have occurred. Provided, however, that a civil lawsuit shall be filed in the District Court no more than four (4) years from the date any document required to be filed with the Commission was required or the date the document was in fact filed, whichever period expires later. Provided further, there shall be no time limitation if fraud or concealment prevents discovery of the alleged violation.
Okla. Stat. tit. 74E, § 6.12