Non-infringement holding showcases the importance of a patent’s written description

In a unanimous panel decision, the Federal Circuit found that Hanmi Pharmaceutical Co. Ltd.’s esomeprazole (Nexium®) does not infringe two AstraZeneca patents listed in the Orange Book for its Nexium® product.  AtraZeneca v. Hanmi Pharmaceuticals, No. 13-1490, 2013 U.S. App. LEXIS 25199, (Dec. 19, 2013).  AstraZeneca appealed Judge Pisano’s finding from the United States District…