Oklahoma

In Naylor Farms, Inc. v. Chaparral Energy, LLC, the plaintiff royalty owners (collectively, Naylor Farms) contended that Chaparral systematically underpaid royalties on production from approximately 2,500 Oklahoma oil and gas wells by improperly deducting from royalty payments certain costs that the plaintiffs contended should have been borne solely by Chaparral under Oklahoma law. The district court granted Naylor Farms’ motion seeking certification of a class of royalty owners under Rule 23 of the Federal Rules of Civil Procedure. In the present proceedings, Chaparral has appealed the district court’s order granting class certification.