Needs review
Source: Player's Handbook

Description: Disarm foes without provoking AoOs

Prerequisites: Combat Expertise, INT 13

Required for: Grappling Block, Strike at the Tail, The Pincers Hold, The Tail Strikes

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.

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.

Normal: See the normal disarm rules