Shares of Sanofi (NASDAQ:SNY) trailed the broader market last year as the company suffered an FDA rejection of its multiple sclerosis drug Lemtrada, and saw revenue fall due to patent expirations. However, CEO Chris Viehbacher recently stated in a recent CNBC interview that the company's pipeline is one of the top five in the big pharma industry.

Is he right, or overly optimistic?

Motley Fool analyst Max Macaluso examines this statement and Sanofi's overall business in the following video. He focuses on the key factors that could see the company return to growth this year, and Sanofi's unique strategy to avoid another patent cliff.