Ben Pennings claimed Adani had issued a media statement that did not convey the truth of his effort to resolve a civil action against him.
The Supreme Court required Ben Pennings to remove posts urging people to provide inside information on Adani's business deals.
Supreme Court Justice Jean Dalton found the mining giant had engaged in exploitative and dishonest behaviour with four users of its Abbot Point coal terminal.
The mining giant filed the fresh claim for damages against activist Ben Pennings on Thursday,just hours after its unreported requests to raid his home were made public.
Rock covering the coal seams is being removed at Adani's Carmichael coal mine in central Queensland's Galilee Basin.
Mr Dow joined the company in April 2018,pushing the company through contentious approvals processes for the major Carmichael mine in Queensland's Galilee Basin.
Another financial institution has said it will not renew any insurance policies with Adani's Queensland coal mine project.
One of the insurers revealed to be paid by Adani has said it is reviewing its policy towards fossil fuels which raises further questions about the financial backing of the future.
A Bermuda-based insurer has gone silent on its involvement with the controversial Queensland coal and rail project.
The world's largest insurance broker has been trying to secure cover for the controversial Adani mine since 2015.
State and federal governments ignored scientific evidence about environmental damage regarding the Adani mine,a report has found.