5. Louis Vuitton vs. Dooney & Bourke

Louis Vuitton filed an infringement action against American handbag maker Dooney & Bourke, which accused the latter of copying the unique Louis Vuitton monogram pattern. The company argued that a similar monogram on Dooney & Bourke handbags infringed its trademarks. The case ended in 2008, per Forbes with the judge ruling in favor of Dooney & Bourke.
Edited by Nimisha