The company controls 100 percent of the market for certain specialized soybean and corn seeds, along with more than 80 percent of the market for a corn that resists destructive insects. But is it illegal - That is the question raised in a lawsuit filed last month by Basel, Switzerland-based Syngenta, the world`s biggest agrichemicals company and bitter Monsanto rival.</p><p><a href="http://www.reuters.com/newsArticle.jhtml?type=reutersEdge&storyID=6069758">Reuters</a>