Improved Disarm [General]
You know how to disarm opponents in melee combat.
Prerequisites: Int 13, Combat Expertise.
Benefit: You do not provoke an attack of opportunity when you attempt to disarm an opponent, nor does the opponent have a chance to disarm you. You also gain a +4 bonus on the opposed attack roll you make to disarm your opponent.
Normal: See the normal disarm rules, page 155.
Special: A fighter may select Improved Disarm as one of his fighter bonus feats (see page 38).
A monk may select Improved Disarm as a bonus feat at 6th level, even if she does not meet the prerequisites.
Source: Player's Handbook