YSL Successfully Challenges Louboutin's Trademarked Red Soles

Christian Louboutin's Red-Sole Shoe Trademark Is Valid, To A Limited Extent: Second Circuit — Los Angeles Intellectual Property Trademark Attorney Blog — September 14, 2012

Colour marks & fashion: The YSL v. Louboutin Shoe story – Artistik License: The Magazine

Louboutin Red-Sole & Surrounding Contrast: An Implied Trademark Limitation

The Worldwide Trademark Battle over the Iconic Red Bottom Shoe - Chicago-Kent

How can Louboutin copyright red bottoms? - Quora

Look-For Louboutin Kick-in-the-Pants Shoes?

Yves Saint Laurent Defends Its Red Soles Against Christian Louboutin's Charges

Designer Profile: Christian Louboutin – OneOff Vintage

Seeing red - another Christian Louboutin trade mark lawsuit trampled in court

Yves Saint Laurent Defends Its Red Soles Against Christian Louboutin's Charges

Christian Louboutin sues Yves Saint Laurent over red soles on heels - The Washington Post

Trademarking A Color In The World Of Fashion Is Easier Said Than Done - Above the Law

Trademark protection of color: Louboutin's red-soled shoe is a clever logo

How Louboutin fought tooth and nail for his special red