The Fight for Red: Fashion Statement or Protected Trademark?
Red sole diary: Christian Louboutin can trademark a color, but it doesn't help him much - POLITICO
Christian Louboutin - Wikipedia
Louboutin v. YSL Trademark Infringement Suit for Red Sole Trademark
EU Court rejects Christian Louboutin's bid to trademark red soles - Armenian News
Christian Louboutin sues Yves Saint Laurent for red sole shoes, British Vogue
Christian Louboutin Files New Red-Sole Lawsuit
Christian Louboutin, Meta File Joint Lawsuit Against Counterfeiter – Footwear News
Red Soles, High Heels, and a Global Quest for Trademark Rights
Louboutin Red-Sole & Surrounding Contrast: An Implied Trademark Limitation