At 12 times EBITDA, shares of Quidel are a "good value," Piper Jaffray analyst William Quirk tells investors in a research note. The analyst believes Beckman's latest legal move has opened the door to a potential asset sale. Beckman filed a brief on Tuesday permitting Quidel additional time to reply to its initial legal filing, the analyst points out. He believes this may have been done because of the possibility that the two companies are in discussions around a BNP asset sale. Quirk thinks that if Quidel can get above $700M pre-tax from a sale of its BNP assets, it would essentially double its EBITDA for free. The analyst keeps an Overweight rating on Quidel with a $50 price target.