NEW YORK— Some shareholder of Xerox are sueing  activist investor Carl Icahn alleging that he bought HP Inc  shares with the knowledge that Xerox was considering buying the stock at a premium. The Miami Firefighters Relief and Pension Fund filed has filed a  lawsuit against Icahn and his investment company. Xerox after settling a law suite with Fujifilm appaers to be getting involved in more court problems  again.   HP in November rejected Xerox’s $33.5 billion buyout bid, prompting the printer maker to make plans to go hostile. Carl Icahn owns 4,2% of HP and 11% of Xerox making him the companies largest shareholder.