<p>According to articles of association, Tata Sons shareholders can be asked to exit by passing a special resolution</p> <p xmlns:fn="http://www.w3.org/2005/xpath-functions">Tata Sons Ltd&rsquo;s articles of association gives it the power to ask shareholders to sell their holdings by passing a special resolution, a rule that can be potentially used to force Mistry family firms to exit the Tata group holding firm amid a bitter battle.</p>