6. Christian Louboutin vs. Yves Saint Laurent

Christian Louboutin sued Yves Saint Laurent, in 2011, claiming that the high-fashion footwear's monochrome line was trademark infringement of his red-sole shoes. Per WWD, the suit was dismissed in 2012, as a Manhattan federal court ruled that Louboutin had no further claims against YSL.
Edited by Nimisha