Interesting trademark case at European Court: Louboutin vs. Deichmann - The high heels red sole. With TV
Louboutin Gets Injunction in Red Sole Trademark Registration Bid
Louboutin Red-Sole & Surrounding Contrast: An Implied Trademark Limitation
Here's How Christian Louboutin, Inspired by Showgirls, Proved Trampy Can Be Chic
Yves Saint Laurent Defends Its Red Soles Against Christian Louboutin's Charges
Christian Louboutin Successfully Defends Red Sole IP In Beijing Case
Manhattan judge gives Yves St. Laurent the boot for swiping signature red soles of shoe maven Christian Louboutin – New York Daily News
How does Louboutin figure it has a trademark on a red sole (versus Yves Saint Laurent making a red-soled shoe)? - Quora
Red Bottom Heels: The Trademark Dispute – University of Cincinnati Law Review Blog
Louboutin's red sole: a valid trademark after all? — Hoogenraad & Haak