Duane Morris LLP added Adam P. Beckerink to the firm’s corporate practice group in its Chicago office.Beckerink represents multinational corporations and high-net-worth individuals in tax disputes, controversies and litigation with revenue authorities throughout the United States. His practice spans all aspects of the tax planning and dispute resolution process. That includes audit, litigation and appeals in matters such as state False Claims Act tax defense, state tax refund class action defense, individual …