WILMINGTON, Del. - A plaintiff in a shareholder derivative lawsuit, who stopped being a shareholder in a company after the company went private, told a federal court in Delaware on Feb. 3 that he still has standing to bring a suit against certain of a company's directors and officers (Philip Halpert, derivatively on behalf of AsiaInfo-Linkage, Inc. v. Steve Zhang, et al., No. 12-cv-1339, D. Del.).