sule 66RULE 66-QUO WARRANTO. Rule 66. Literally means by what authority Quo Warranto is a special civil action to determine the rht to the use and exercise of a public office or franchise,Rule 66.1: Application of the Civil Procedure Rules: Rule 66.2: Action on behalf of the Crown: Rule 66.3: Counterclaims, other additional claims, and set-off: Rule 66.4: