Which of the following is NOT a class into which an invention must fit?
A) A machine or something with moving parts or circuitry
B) A design of a machine or something with moving parts or circuitry
C) A process or method for producing a useful and tangible result
D) An article of manufacture
E) A composition of matter

Question

Quizplus · Accepted Answer

In patent law, an invention must fit into one of several classes to be eligible for a patent. These classes include a machine, a process or method, an article of manufacture, and a composition of matter. A design of a machine or something with moving parts or circuitry, while it can be patented under design patents, does not fit into the classes of inventions that can be patented under utility patents, which is what the question seems to be referring to.

Which of the Following Is NOT a Class into Which