Isn't the Lanham act to do with trademarks?
Ahhh, I think I found what you were referring to...
Section 43(a)(1)(B) is also often utilized in law when false or
misleading statements are alleged to have hurt a business. To be proven
in court a claimant must satisfy 3 principles: There was a false or
misleading statement made, the statement was used in commercial
advertising or promotion, and the statement creates a likelihood of harm
to the plaintiff.