On June 28, 2016, the much-anticipated memorandum opinion of the US District Court for the District of Delaware in Temple-Inland, Inc. v. Cook et al., No. 14-654-GMS was released on the parties’ cross-motions for summary judgment, finding Delaware’s extrapolation methodology and audit techniques collectively violate substantive due process. According to Judge Gregory M. Sleet, “[t]o put the matter gently, [Delaware has] engaged in a game of ‘gotcha’ that shocks the conscience.” The opinion also specifically called third-party auditor Kelmar Associates LLC’s formula used for estimation into question, noting that the use of a holder’s calendar sales as the denominator in the ratio used to estimate liability raises questions given the lack of connection between abandoned property and the economy. In sum, this opinion is a “must read” for any unclaimed property advisor or holder going through a Delaware audit and is likely to have a drastic impact on both on-going and future unclaimed property audits. Holders should contact their unclaimed property advisors immediately to begin discussing how to proceed based on this groundbreaking development.