Novo Nordisk said Eli Lilly's ads uses outdated research and leave out important information, which could mislead consumers.

The lawsuit follows a cease-and-desist request and argues Lilly is using “deceptive” ads to claim its GLP-1 products are broadly superior to Novo’s medicines. Lilly countered that…

The lawsuit, filed in federal court Tuesday, accuses Eli Lilly of using outdated data in advertising campaigns.