June 24 (Reuters) - Zip Co Ltd Z1P.AX :
* NOTIFIED THAT FIRSTMAC LTD HAS COMMENCED PROCEEDINGS IN FEDERAL COURT AGAINST ZIP CO LTD
* SAYS PROCEEDINGS ALLEGE INFRINGEMENT OF FIRSTMAC'S "ZIP" TRADE MARK
* SAYS WILL DEFEND PROCEEDINGS AGAINST IT AND UNIT BY FIRSTMAC LTD