Abstract: | Legal context. The recent case of EPI v Symphony has left theUK law of confidentiality in an uncertain state: the extentto which recipients of confidential information may be permittedto use mixtures of such information with publiclyavailable material remains unclear. The Court of Appeal in EPIfelt that it was hard to reconcile the principle that any claimin confidence must fail if the material in question is in thepublic domain with the springboard doctrine; butis the distinction illusory? Key points. Issues raised in this case include considerationof what precisely is use of confidential information,when mixed with public information, and whether a confider shoulddo more than rely on confidentiality obligations to protectthe fruits of his/her disclosures. This article asks how confidentialityobligations may be aligned with the control of statutory intellectualproperty rights. It considers whether the Court of Appeal inMarkem v Zipher has confused the issue and speculates as tohow far the general law of contract can assist the confider. Practical significance. Finally, this article discusses whichlegal tools will best assist the confider seeking to protectits intellectual property. |