Source: Player's Handbook
You know how to disarm opponents in melee combat.
Prerequisite: 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 to the opposed attack roll you make to disarm your opponent.
Special: A monk may select Improved Disarm as a bonus feat at 6th level, even if she does not meet the prerequisites.
Normal: See Disarm rules