US Patent Office tightens the screws on software patents

In its decision, the BPAI announced a new two-pronged test for determining whether an invention involving a mathematical algorithm would be eligible for patent protection. First, the invention must be "limited to a tangible practical application" and result "in a real-world use." Second, it must be "limited so as to not encompass substantially all practical applications of the mathematical algorithm" in all fields or even in "only one field.