Lawyers from Winston & Strawn and Husch Blackwell delivered a $1 billion patent verdict for Monsanto Co. against rival DuPont in a case that got the attention of the intellectual property bar because it involved products still in development and took place in a jurisdiction not known for being friendly to plaintiffs.

A St. Louis, Mo., jury returned the verdict on Aug. 1, concluding that E.I. DuPont de Nemours and Co. and a subsidiary infringed Monsanto’s proprietary Roundup Ready herbicide-resistant technology for soybeans and corn.