The former Oasis bandmates are engaged in a legal battle over Noel blaming Liam's "hangover" for their decision to pull out of V Festival 2009, which ultimately led to the group's split.
Noel confirmed last week that his brother was suing him over the comments, saying it was all "very silly", but reports later said that the case had been dropped.
However, talking to Radio 1 Newsbeat today, Liam said: "It's not over yet."
The Beady Eye frontman continued: "There are a few things which need to be sorted out. I didn't want this to happen. It's not nice suing your family but like I said, he was telling porkies for the sake of his mates and journalists to get a wise crack on me.
"If he listens to his lawyers and does the right thing then it'll be well and truly over. I never wanted it to happen but it has to happen."
> Liam Gallagher takes pop at Noel during Reading Festival headline slot
Watch Oasis' video for 'Wonderwall' below: