IBM claims that the daily deals site is using its patented technology, but is it just fishing for extra licensing fees? stock nearly doubled from all-time lows after its fourth quarter sales and earnings soundly beat analyst estimates. Unfortunately, the stock's recovery recently In a complaint filed at the U.S. District Court in Delaware, IBM stated that it previously warned Groupon that its business model was built on its patented technologies, but Groupon "refused to engage in any meaningful discussions about reaching a license agreement."