Trademark protection of color: Louboutin's red-soled shoe is a clever logo
Trademark issue: Red sole(ly) for Louboutin? LexDellmeier – Markenanwalt, Designanwalt München - Schutzrechte Marken, Designs, Patente, Gebrauchsmuster, Urheberrechte - Mark
Louboutin Handed a Loss in Red Sole Trademark Lawsuit in Japan
Belgian court declares Louboutin trademark invalid in three European countries — Fashion, Law & Business
Christian Louboutin's Red Sole is Not a Valid Trademark in India - The Fashion Law
Louboutin Handed a Loss in Red Sole Trademark Lawsuit in Japan
Louboutin wins court battle over trademark red soles
Puma INTELLECTUAL PROPERTY PLANET
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