A GVR order is a type of order issued on occasion by the Supreme Court of the United States, in which the Court grants a petition for certiorari, vacates the decision of the court below, and remands the case for further proceedings (hence the acronym by which they are known). An order of this sort is appropriate when there has been a change in the law or a precedential ruling subsequent to the lower court or agency's decision; the Supreme Court simply sends the case back to the lower court to be reconsidered in light of the new law or the new precedent. GVR orders are designed to be efficient and thus are not full explications of the law, and have no precedential effect outside of the case in which the order is issued.
For discussion of when a GVR is appropriate see Lawrence v. Chater, 516 U.S. 163 (1996); SKF USA Inc., v. United States, 254 F.3d 1022 (Fed. Cir. 2001). For a more recent decision, see Youngblood v. West Virginia, 547 U.S. 867 (2006).