Conor McGregor just formally moved to overturn the result of his recent civil assault case in Ireland.
Sources with direct knowledge tell TMZ Sports ... McGregor filed an appeal with the courts last Friday in an effort to clear himself following a jury's November ruling that he was liable for assaulting Nikita Ni Lamhain.
The case, as you know, stemmed from allegations Ni Lamhain -- AKA Nikita Hand -- made against the fighter in a lawsuit years ago.