In re Lowry, 32 F.3d 1579 (Fed. Cir. 1994) was a 1994 decision of the United States Court of Appeals for the Federal Circuit on the patent eligibility of data structures. The decision, which reversed a PTO rejection of data structure claims, was followed by a significant change in PTO policy as to granting software related patents, a cessation of PTO appeals to the Supreme Court from reversals of PTO rejections of software patent applications, an increasing lenity at the Federal Circuit toward such patents and patent applications, and a great increase in the number of software patents issued by the PTO.