Christian Louboutin's request for an injunction forbidding the sale of one of Yves Saint Laurent's shoes has been denied by a federal U.S. judge in Manahattan. Acting on the basis of a trademark registration obtained in the U.S. in 2008, the designer filed a lawsuit against YSL last April, claiming that its own trademark rights were being infringed by a pump from YSL's cruise 2011 collection. At issue was its use of a monochromatic red sole similar to those that Louboutin has been using as a distinctive mark in all its shoes since 1992. The French designer argued that YSL's model would have caused irreparable damage to the sale of his own shoes, projected to reach $135 million this year. Pointing out that YSL developed red-soled shoes even before Louboutin, the attorney of the French fashion house, owned by PPR, noted that many other brands have used red on the soles of their shoes. Even King Louis XIV of France wore red-soled shoes. A new hearing in the case was scheduled for Aug. 17, but we have been unable to find out what happened there. Before the hearing, there was speculation in the American press that Louboutin was not going to pursue a full trial.