Lehman Brothers Holdings Inc. has asked a bankruptcy judge to reject a "grossly inflated" proposed settlement that its former brokerage agreed upon with a Lehman subsidiary in Germany, Reuters reported yesterday. The proposed settlement would give Lehman Brothers Bankhaus AG a low-priority, $600 million unsecured claim against Lehman Brothers Inc., the former brokerage company. The holding company said that it was basing its objection on information that was not disclosed in public settlement papers, which could invite other creditors to oppose the settlement.