YSL Successfully Challenges Louboutin's Trademarked Red Soles

Louboutin Red-Sole & Surrounding Contrast: An Implied Trademark

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Louboutin could lose red-sole monopoly

Louboutin wins red sole fight with YSL; yet YSL “monochrome” line

Louboutin Wins Round in Red-Sole Shoe Appeal - WSJ

Trademark issue: Red sole(ly) for Louboutin?

Christian Louboutin vs. YSL 'Red Soles' Lawsuit Finally Dismissed

Louboutin vs. Yves Saint Laurent

The Worldwide Trademark Battle over the Iconic Red Bottom Shoe