Which of the following is not eligible for a patent?
A)A machine
B)A business method
C)A naturally occurring substance
D)An improvement on a machine
E)A food additive

Question

Quizplus · Accepted Answer

A naturally occurring substance is not eligible for a patent because patents are granted for inventions, and naturally occurring substances are not considered inventions since they do not result from human ingenuity.

Which of the Following Is Not Eligible for a Patent