Piper Jaffray analyst Michael Olson views the 8% pullback in shares of Rovi (ROVI) over the past two weeks as a buying opportunity. Concerns around patent license renewals with three of the top-10 domestic service providers and trading around the acquisition of TiVo (ITVO) have pushed the stock lower, Olson tells investors in a research note. While a renewal with Comcast (CMCSA) does not appear imminent, DISH (DISH) and/or a third unnamed service provider could be signed within months, the analyst writes. He keeps an Overweight rating on Rovi with a $29 price target.