Pioneer Hi-Bred International Inc. said that it is indefinitely delaying the commercial launch of the genetically modified soybean seed at the center of a long-running court battle with archrival Monsanto Co., The Wall Street Journal reported. Pioneer, a unit of E.I. du Pont de Nemours & Co., had been telling Wall Street that it would launch the Optimum GAT soybean line in 2013 or 2014. The seed, whose launch has been delayed before, is controversial because DuPont is using a Monsanto gene in the soybean plant against the wishes of Monsanto. Pioneer officials said Tuesday that the soybean plant is in limbo because Monsanto refuses to give foreign regulators access to data necessary for the genetically modified crop to win import approvals.