Mealey's (September 20, 2021, 9:58 AM EDT) -- WASHINGTON, D.C. — In a Sept. 16 holding, the Federal Circuit U.S. Court of Appeals left intact a construction by the Patent Trial and Appeal Board of the disputed claim term “tool” as it is used in a system for plugging a borehole in an oil or gas well, but said the board ran afoul of the Administrative Procedure Act in its final written decision....