Wolf, Greenfield & Sacks PC Jonathan counsels an array of clients, including life sciences companies, universities, and not-for profit research institution, with a focus on the areas of small molecule pharmaceuticals, pharmaceutical formulations, medical devices and surgical methods.  Jonathan is highly skilled in conducting and managing domestic and foreign patent prosecution and pre-litigation investigations, including worldwide freedom to operate, patentability and exclusivity analyses.  He is also experienced in representing clients in federal district court litigation and in post-grant proceedings before the United States Patent and Trademark Office and foreign counterparts.  Jonathan has also provided regulatory advice and representation to clients relating to patent term extension and Orange Book listings under the Hatch-Waxman Act. Prior to joining Wolf Greenfield, Jonathan served as Counsel at Wilmer Hale, where he prosecuted and managed prosecution of patent applications worldwide for domestic and foreign life sciences, universities and consumer clients in the chemical, pharmaceutical, biotechnology and materials science arts.