CLAY, Circuit Judge. Plaintiff Lufti Said Saalim appeals the district court’s two orders granting judgment on the pleadings in favor of Defendants Jeffrey Bretzloff, Justyn McNett, Michael Navarre, and the Lucas County Board of Commissioners, and sua sponte dismissing Defendants Walmart, Inc. and Wal-Mart Stores, East, LP. Saalim alleged violations of his Fourth and Fourteenth Amendment rights under 42 U.S.C. § 1983 and also asserted various violations of Ohio state law. For the reasons set forth below, we AFFIRM in part, REVERSE in part, and REMAND the case for further proceedings consistent with this opinion.

MATHIS, Circuit Judge. This case involves the alleged infringement of a copyright on software code used in an industrial control system. This is the third time this case has come before us. RJ Control Consultants, Inc. and its sole shareholder, Paul Rogers (collectively, “Plaintiffs”), appeal the district court’s exclusion of their proposed expert and the grant of summary judgment to Multiject, LLC; its sole owner, Jack Elder; and RSW Technologies, LLC (collectively, “Defendants”). In the first appeal, we reversed the district court’s grant of summary judgment to Defendants on Plaintiffs’ copyright-infringement claim related to the software code and remanded the case to the district court “for the taking of additional evidence.” RJ Control Consultants, Inc. v. Multiject, LLC, 981 F.3d 446, 458–59 (6th Cir. 2020) (RJ Control I). We dismissed the second appeal for lack of appellate jurisdiction. RJ Control Consultants, Inc. v. Multiject, LLC, No. 22-1102, 2023 WL 2785764 (6th Cir. Apr. 5, 2023) (RJ Control II). Because the district court did not abuse its discretion in excluding Plaintiffs’ proposed expert and because the district court did not err in granting summary judgment to Defendants, we affirm.