Oklahoma liquor store owners argue in their lawsuit that SQ 792 is unconstitutional under the Fourteenth Amendment of the U.S. Constitution, which guarantees equal protection for all under the law. Shown is Byron's Liquor Warehouse in Oklahoma City. [Photo by Jim Beckel, The Oklahoman Archives]

Oklahoma liquor store owners have filed a court challenge to State Question 792, the ballot measure that will legalize wine sales in grocery stores in 2018.

The Retail Liquor Association of Oklahoma and Joseph P. Richard, who owns Cache Road Discount Liquor and Wine in Lawton, filed the lawsuit against the Oklahoma Alcoholic Beverage Laws Enforcement Commission on Monday in Oklahoma County District Court.

Richard and the liquor store owners group are seeking a court order to stop the Oklahoma ABLE Commission from implementing the many changes to state alcohol laws that are part of SQ 792.

The liquor store owners argue in the lawsuit that SQ 792 is unconstitutional under the Fourteenth Amendment of the U.S. Constitution, which guarantees equal protection for all under the law.