Texas Quarter Horse Association Texas Thoroughbred Association Texas Horsemen's Partnership Gillespie County Fair and Festivals Association, Inc.et Al. // American Legion Department of Texas v. American Legion Department of Texas, Temple Post 133 Kickapoo Traditional Tribe of Texas Thompson Allstate Bingo Supply, Inc. And Moore Supplies, Inc.// Texas Quarter Horse

OPINION

Bob Pemberton, Justice

■This proceeding presents two issues of potential significance to appellate and administrative-law practitioners. The first is whether third parties have standing to appeal from a trial-court judgment invalidating an agency rule when the affected agency has not perfected its own appeal. At least under the circumstances here, we conclude that the third parties lack standing to appeal. The second issue is whether an attempted appeal by such third parties, and no other parties, is subject to the rule requiring appellate courts to vacate lower-court judgments and…