If an invention was known or used by others in this country, or patented or described in a printed publication in this or a foreign country, before the invention thereof by the applicant for patent then:
A) the invention can only be patented for 10 years
B) the invention can only be patented for 5 years
C) the invention cannot be patented without a 5 year grace period
D) the invention can only be patented in some states
E) none of the other choices are correct

Question

Quizplus · Accepted Answer

If an invention was known, used, patented, or described in a publication before the invention by the applicant, it is considered prior art and cannot be patented, making all other specific conditions listed incorrect.

If an Invention Was Known or Used by Others in This