A $1 billion pact between Nortel Networks Corp.'s U.S. unit and bondholders won court approval Thursday over the protests of the one-time Canadian technology giant, the Wall Street Journal reported today. The ruling from Bankruptcy Judge Kevin Gross means distressed-debt investors could stand to recover as much as $5 billion from Nortel’s collapse in 2009, including more than $1 billion in interest on $4 billion worth of debt. The Canadian parent company tried to derail the deal between Nortel U.S. and bondholders, arguing the settlement was the product of a defective process. The U.S. unit defended the settlement as a compromise on a claim for interest that could have reached $1.6 billion.