( January 22, 2026, 11:13 AM EST) -- CHICAGO — A federal judge in Illinois applied the wrong legal standards for genericness and fair use when issuing a preliminary injunction barring the companies behind the Little Caesars pizza chain from using the phrase “Pizza Puff” when advertising a new cupcake-like pizza product, a Seventh Circuit U.S. Court of Appeals panel held; the panel determined that the judge failed to adequately analyze whether another food entity’s “Pizza Puff” mark was protectible....