Cigna Group’s pharmacy benefit manager Express Scripts on Tuesday sued the U.S. Federal Trade Commission, alleging that the agency’s July report on the PBM industry was biased and defamatory and asking the court to order the FTC to withdraw the report.

Express Scripts is suing the Federal Trade Commission (FTC), demanding the retraction of a report it claims is false and harmful to the pharmacy benefit manager (PBM) industry.

Whether Express Scripts wins its unique defamation lawsuit will depend on whether the PBM can prove the FTC made false statements. But winning the lawsuit may not be what the PBM is looking for.