A widely watched class action involving hearing-impaired drivers at United Parcel Service now features an appellate judge canning her very own precedent.

In an en banc ruling, the 9th U.S. Circuit Court of Appeals on Friday reversed an earlier panel and vacated class certification and an injunction against UPS. The latest opinion in Bates v. UPS laid out a new affirmative defense standard for employers hit with Americans with Disabilities Act claims.