A judge set a June 15 sentencing date for the retired anesthesiologist, who is in his late 50s.
According to court documents, Boucher tackled Paul while Paul was mowing his yard, giving the senator six broken ribs.
Federal prosecutors will seek a 21-month prison sentence for Boucher.
In November, Boucher's attorney said the altercation between his client and Paul resulted "over a trivial matter". Baker says he'll argue for probation. A friend of Paul's said the senator had alighted from his ride-on lawnmower to remove a tree branch when he was suddenly tackled from behind.
Rene Boucher, a neighbor of Sen. Paul has said he never saw the attacker because he was facing downhill and wearing ear protection from the noise of his lawn mower.
Boucher affirmed during an interview with the Federal Bureau of Investigation in November that the incident was not politically motivated, but that it instead sprang forth from an ongoing property dispute, court records show.
He also characterized the attack as a dispute that boiled over that had nothing to do with politics.
Boucher was released on a $25,000 unsecured bond on Friday and is not allowed to contact Paul or his family.
"I stress it because so frequently with these types of cases you see people accidentally coming together and they may not even mean it, and things might happen", Battani said to Boucher.