Justice Roberto Rivera-Soto, who left the state Supreme Court last year following a blaze of dissent over the temporary assignment of Appellate Division judges to that tribunal, is asserting his views on judicial administration just as poignantly as a private lawyer.

Representing a convict suing Atlantic City police for alleged civil rights violations, Rivera-Soto, now of Ballard Spahr in Cherry Hill, argued that the conviction was invalid — and should be excluded — because a Tax Court judge, temporarily assigned to the Superior Court, presided in the case.