Robin and Barry Gibb said they would no longer perform under The Bee Gees name when Maurice died unexpectedly in 2003 of complications from twisted intestines.
But Robin Gibb recently told the BBC he is "very open" to a reunion if and when Barry "feels comfortable with it."
"When or where is to be decided at a time when he says 'yes,'" said Robin Gibb, who is set to release a solo album.
"We decided (to disband) on an emotional level at that point," he explained. "Whether or not that will change, we don't know. It's a personal thing and we'll do it when the time is right. So it's not a 'no,' it's just emotionally when it's right."