The body are seeking the names and details of ten people from their Internet Service Provider.
Since 2005, the organisation has settled 52 cases while another 14 are currently in progress.
Their targets are those who those who share hundreds and thousands of songs with other users of file-sharing networks such as BitTorrent, eDonkey, DirectConnect, Gnutella and Limewire.
Dick Doyle (pictured), The Director General of IRMA, explained why they saw cause to instigate further action, saying: "When we announced this campaign in April 2005 we saw a dramatic fall in the number of file sharers on the Irish market. This was encouraging.
"However in recent months the number of files being uploaded has increased to proportions where we feel that we have no choice but to bring these individuals to justice for their actions."
In recent days over 8,000 new cases in 17 countries have been announced, including the first ever cases against illegal file-sharing in the two biggest markets of South America and in Eastern Europe.