Investors don't seem to be able to make up their minds on Monday as stocks fluctuate, going back and forth between positive and negative territory. Microsoft (MSFT) is suing Samsung claiming it refused to pay patent royalties after the software giant said it would acquire Nokia's (NOK) handset business. Other tech stocks are looking to start the week off on a positive note. Groupon (GRPN) and Amazon (AMZN) are both higher. Investors are hoping Groupon will report higher second-quarter revenues when it releases results after the close on Tuesday. The earnings calendar is winding down this week, but some companies waiting to report after today's close includes AIG (AIG), the operator of Jamba Juice (JMBA) and Marathon Oil (MRO). TheStreet's Susannah Lee has details from New York.