Listing the top five e-discovery cases in 2015 can be premature. Cases are often not valuable until the precedents are used to support facts in other cases. These cases are prefaced with important e-discovery topics that persist year over year with different cases and characters.

1. Costs: Colosi v. Jones

Prevailing parties can recover a portion of their electronic discovery costs at the conclusion of litigation under the cost statute, 28 U.S.C. § 1920(4), which permits taxing fees for exemplification and making copies of materials obtained for the case. But the moving party must show the costs were necessary to make copies, such as the conversion of electronic documents to TIFF.