In-N-Out Burgers has filed a lawsuit alleging consumers are likely to confuse Smashburger’s “Triple Double” hamburger with In-N-Out’s “Double-Double,” “Triple Triple” and “Quad Quad.” In-N-Out Burgers v. Smashburger IP Holder LLC, No. 17-1474 (C.D. Cal., filed August 28, 2017). In-N-Out asserts use of the marks “Double-Double” and “Triple Triple” since the early 1960s to designate hamburgers and cheeseburgers. The complaint alleges that In-N-Out is “widely known for providing variations of its menu items to customize orders” and that customers regularly mix the menu names “to form names to customize orders, including ‘Triple Double.’” Claiming trademark infringement, unfair competition and dilution under federal and state laws, In-N-Out seeks an injunction and damages. The chain has also filed a notice of opposition to Smashburger’s application for registration for a “Triple Double” mark, claiming priority, likelihood of confusion and dilution by blurring.