Here’s an investment idea, taken from J. Royden Ward, editor of Cabot Benjamin Graham Value Letter. The idea is Sanofi-Aventis (SNY). Headquartered in France, Sanofi-Aventis is the world’s fourth-largest pharmaceutical company. It’s got 85 products in its drug pipeline, so you know it will have lucrative future. The dividend yield is a plump 6.2%. And just last Friday, a judge ruled that Sanofi-Aventis’ patent for Plavix, a blood-thinner that’s been the second-best-selling drug in the world for the past two years, was still valid, and that Apotex has no legal grounds to market a generic version of the drug....