Federal Rule of Evidence 502 (“Rule 502”) addresses the evidentiary issues arising from the disclosure of attorney-client privilege or work product information in discovery, inadvertent or otherwise. Litigators are urged to include obtain a Rule 502(d) non-waiver order in all federal court litigation and comparable non-waiver orders in state court matters. As we have previously noted, a simple and properly drafted Rule 502(d) Order can provide producing parties with significant, material protection against privilege waiver in the instant proceeding as well as in any other federal or state proceeding. While more and more litigants have heeded this advice, the recent matter of RTC Industries. v. Fasteners for Retail demonstrates the importance of properly drafting of a Rule 502(d) order, particularly in patent infringement matters wherein one or more parties may be considering relying on an “advice of counsel” defense.