EWING, N.J.--(BUSINESS WIRE)--Antares Pharma, Inc. (Amex:AIS) announced that a second patent extension covering its proprietary Advanced Transdermal Delivery (ATD™) Gel System has been issued by the United States Patent and Trademark Office. The patent was issued on February 26, 2008 and is in effect until August 2021. Antares is the sole owner of the newly issued patent.
