A Cook County judge will issue monetary sanctions against a man attorneys allege is lying about his standing as a proposed settling class member.California resident Benjamin Perez intervened in Amy Joseph’s and Robert O’Brien’s class-action suit against Monster Inc. and Best Buy, arguing he filed a substantially similar lawsuit.The Cook County action — representing more than 1 million class members — claimed that because of a chart on the back of certain Monster HDMI cables, they were required …