Lululemon is the Fashion Industry’s Biggest Patent Troll

Lululemon is aggressively protecting its $48 sports bras and $64 tank tops by way of design patents — an unusual move that the rest of the retail industry is watching carefully. The maker of expensive workout gear, which famously sued Calvin Klein and G-III Apparel in 2012 for violating a design patent on its yoga pants, has since accumulated a total of 31 such patents on