Yes, in Federal court in Tyler, Texas in the late 1970's. Said challenge was administratively dismissed, however, based on the evidence and data submitted by the court on behalf of Fikes Chemical Company. On occasions when complaints have been filed and the company was under investigation by the EEOC, the assessments provided the respective construct and concurrent validation study data to establish that the assessments were not discriminatory in the hiring process. This data has been accepted by the EEOC repeatedly, with never an adverse finding or an out-of-court settlement against any employer for the proper use of the assessment systems. If there were to be legal challenge, the test publisher will involve itself directly in presenting the appropriate evidence of validation.