It took a federal magistrate five minutes to dismiss charges against veteran unionist Bob Carnegie in a Brisbane courtroom on August 16.
Carnegie faced 18 charges related to contempt of court, which were pushed by anti-union building firm Abigroup.
Abigroup had accused Carnegie of defying court orders to avoid the site of a community picket that was campaigning for safety and conditions on behalf of the Construction Forestry Mining Energy Union and its workers.