Frozen 2 versus Christian Louboutin: could Anna's red-soled shoes lead to a trademark dispute? - World Trademark Review
Louboutin Handed a Loss in Red Sole Trademark Lawsuit in Japan
Louboutin Wages New Red Sole Trademark, Design Patent Lawsuit
Fashion; red in tooth and claw?
Trademark Setback: Louboutin cannot protect his red soles in Switzerland
Red Soles, High Heels, and a Global Quest for Trademark Rights
Louboutin Handed a Loss in Red Sole Trademark Lawsuit in Japan
Why do Louboutin high heels have red bottoms? - Quora
Christian Louboutin Slams Reports Its Red Sole Trademark Is In Danger – Footwear News
Two luxury shoe designers can keep their red soles