JPO Rejected Colormark of Louboutin's red soles – JAPAN TRADEMARK REVIEW
Christian Louboutin CAN trademark signature red soles after winning appeal (unless the shoe itself is the same colour)
The Worldwide Trademark Battle over the Iconic Red Bottom Shoe - Chicago-Kent
Louboutin's Lawsuit Over Their Famous Red Soles - Vincent LoTempio
Louboutin Wins Lawsuit, Protects Red Soles
Clarins Instant Light Blush in Coral Tonic - Review
Christian Louboutin Loses Lawsuit Against YSL – The Hollywood Reporter
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Christian Louboutin wins EU legal battle to protect red soles, The Independent