In the law firmsPolsinelli P.C. added shareholder Luke T. Shannon to its intellectual property litigation practice.Shannon practices on patent infringement suits that arise under the Hatch-Waxman amendments to the Federal Food, Drug and Cosmetic Act.He was previously with Rakoczy Molino Mazzochi Siwik LLP.•Burke Warren MacKay & Serritella P.C. added litigation partner Jamie A. Robinson to its litigation, appellate, health-care and religious practices.Robinson’s practices include payor-payee disputes, medical …