Which of the following defenses can an alleged infringer use to prove that the patent is invalid?
A) The invention is a novelty.
B) The invention has utility.
C) The invention was previously unknown.
D) The invention is obvious.
E) The invention has produced unexpected results.

Question

Quizplus · Accepted Answer

An alleged infringer can always defend against an infringement lawsuit by proving that the patent is invalid because the invention is previously known, obvious, or lacks utility. To be patentable, it is not enough for something to be appropriate subject matter. An invention must also have certain characteristics. Namely, it must be novel, nonobvious, and useful.

Which of the Following Defenses Can an Alleged Infringer Use