Proving access to and use of trade secrets are core elements in a trade secrets misappropriation case.  Recent rulings in a trade secrets action filed by Allergan against its competitor Revance Therapeutics (“Revance”) provide helpful guidance on what is sufficient to plead these elements. There, the court explained what facts are—and are not—sufficient to infer access to and use of trade secrets allegedly misappropriated. The court also explained how examining the similarity of design may help in this analysis. Finally, the court clarified that the ability to reverse engineer alone may not always preclude trade secret protection.