An applicant need only make one credible assertion of specific utility for the claimed invention to satisfy 35 USC 101 and 35 USC 112. A discussion of the standards and practices of the MPEP as it relates to subject matter eligibility.This tutorial will focus on patents and the process for securing a patent in the U.S. First, let's consider why we have a patent system? (73) Filing an application without an attorney is possible, but even with some guidance it is definitely not without its challenges.