What is the test for standing to seek preliminary injunctive relief?

Plaintiff must establish that he has standing to seek preliminary injunctive relief. Summers, 555 U.S. at 493; Mayfield v. United States, 599 F.3d 964, 969 (9th Cir. 2010). To do so, he "must show that he is under threat of suffering an 'injury in fact' that is concrete and particularized; the threat must be actual and imminent, not conjectural or hypothetical; it must be fairly traceable to challenged conduct of the defendant; and it must be likely that a favorable judicial decision will prevent or redress the injury." Summers, 555 U.S. at 493 (citation omitted); Mayfield, 599 F.3d at 969.