Which of the following is true in case a patent expires?
A) It comes under the purview of the Supreme Court to restrict its use in public.
B) It is in the public domain and others may use it without limitations.
C) It is put aside for someone else to acquire.
D) It will be reviewed and reassigned to the same owner.
E) It will be declared as null and void and the invention will be declared useless.

Question

Quizplus · Accepted Answer

When a patent expires, the invention is in the public domain, and others may use it without limitation. Remember that at this point it is easy to use the invention since the patent application explains exactly how the invention works, including drawings of its construction.

Which of the Following Is True in Case a Patent