Judge Richard Taranto, of the U.S. Court of Appeals for the Federal Circuit, during U.S. Circuit Judge for the District of Columbia Circuit Sri Srinivasan's official Investiture ceremony. September 26, 2013. Judge Richard Taranto of the U.S. Court of Appeals for the Federal Circuit, during U.S. Circuit Judge for the District of Columbia Circuit Sri Srinivasan’s official Investiture ceremony. Sept.r 26, 2013. Photo: Diego M. Radzinschi/NLJ

The odds of companies such as RPX Corp. and Askeladden LLC ever having standing to appeal Patent Trial and Appeal Board decisions just got longer.