A bankruptcy judge yesterday refused to allow Donald Trump to forge ahead with a legal fight to reclaim his luxury brand from Trump Entertainment Resorts Inc., a descendant of the Atlantic City, N.J., casino company he once led, Dow Jones Daily Bankruptcy Review reported today. "This bankruptcy case right now is at a very sensitive and critical stage," said Judge Kevin Gross in explaining his refusal to immediately lift the bar shielding Trump Entertainment from legal action while it struggles to survive under chapter 11 protection. Trump and his daughter, Ivanka, sued shortly before the company filed for bankruptcy in September, seeking to force it to stop using the Trump name.