An invention company that accused a Mitsubishi affiliate of stealing one of its semiconductor designs more than a decade ago has filed for bankruptcy, saying its debts could top the amount the company agreed to pay in a recent settlement, Dow Jones Daily Bankruptcy Review reported today. The inventor, Grail Semiconductor Inc., said in bankruptcy-court documents that it has settled its 2007 lawsuit against Mitsubishi Electric & Electronics USA, Inc., over the semiconductor design but declined to state how much money it expects to receive. The two sides settled their long-running dispute in October on the eve of a trial to determine a damage amount, according to documents filed in U.S. Bankruptcy Court in Sacramento, Calif. In 2012, a jury awarded Grail Semiconductor nearly $124 million in damages, though a judge later called for a new trial to revisit that amount.