Brazil: Christian Louboutin succeeds with unregistered rights
How does Louboutin figure it has a trademark on a red sole (versus Yves Saint Laurent making a red-soled shoe)? - Quora
Shoe designer Louboutin defends right to red soles
The allure of the red soled shoe
Louboutin v Zara court case: no proven risk of red sole confusion - High heels daily
Christian Louboutin Wins Legal Battle Over Signature Red Soles – Sourcing Journal
Here's How Christian Louboutin, Inspired by Showgirls, Proved Trampy Can Be Chic
YSL Successfully Challenges Louboutin's Trademarked Red Soles
The Fight for Red: Fashion Statement or Protected Trademark?
Louboutin Wages New Red Sole Trademark, Design Patent Lawsuit
Louboutin Red-Sole & Surrounding Contrast: An Implied Trademark Limitation
Victory for Christian Louboutin in red sole copyright case