The sole issue raised by this appeal is whether appellants have an adequate remedy at law by way of appeal and are thus precluded from seeking relief by way of mandamus and prohibition. See State, ex rel. St. Sava, v. Riley (1973), 36 Ohio St. 2d 171, 173-174 [65 O.O.2d 395]; State, ex rel. Woodbury, v. Spitler (1973), 34 Ohio St. 2d 134, 137 [63 O.O.2d 229], certiorari denied (1974), 415 U.S. 913 [69 O.O.2d 42].
Appellants’ complaint challenges appellee Lovinger’s right to hold the office of acting judge. In State v. Staten (1971), 25 Ohio St. 2d 107, 110 [54
Accordingly, the issue raised in appellants’ complaint would not be reviewable upon an appeal from an adverse judgment rendered in the underlying action.
Moreover, we find that the allegations of the complaint, if proven, would present a claim that appellee Lovinger is “without jurisdiction whatsoever to act, [and in such a case,] the availability or adequacy of a remedy of appeal to prevent the resulting injustice is immaterial to the exercise of supervisory jurisdiction by a superior court to prevent usurpation of jurisdiction by the inferior court.” State, ex rel. Adams, v. Gusweiler (1972), 30 Ohio St. 2d 326, 329 [59 O.O.2d 387]. See, also, State, ex rel. Rockwell Internatl., v. Ford (1980), 61 Ohio St. 2d 234, 235 [15 O.O.3d 250].
Accordingly, we reverse the judgment of the court of appeals dismissing appellants’ complaint and remand the cause to that court for further proceedings.
Judgment reversed and cause remanded.