Trademark protection of color: Louboutin's red-soled shoe is a clever logo
Louboutin – IP Currents
YSL Successfully Challenges Louboutin's Trademarked Red Soles
How Louboutin fought tooth and nail for his special red
Louboutin v. YSL Red Sole Shoe Trademark Infringement
Louboutin could lose red-sole monopoly
Court Calls Louboutin's Trademark Into Question – Footwear News
European Ruling Outlines Liability in Christian Louboutin Counterfeiting Case – WWD
Goss-IPgirl: Louboutin Loses Yet Another Trademark Case Over Red-Soled Shoes