The Association of Corporate Counsel has dipped its toe into the U.S. Federal Trade Commission’s high-profile lawsuit accusing Amazon of tricking customers into signing up for its Prime service—saying the case is partly built on interactions between Amazon leaders and in-house lawyers that should be privileged.

The Washington, D.C.-based organization, which represents 45,000 in-house counsel around the world, last week filed an amicus brief focused primarily on a passage in the 92-page lawsuit highlighting that senior executives regularly conferred with in-house attorneys embedded in the Prime business over their consumer-protection obligations.