According to the Public Use Doctrine for Patents, ________

Multiple Choice

According to the public use doctrine for patents, ________.

A) a patent will not be granted if the invention was already in public use for more than a year prior to the filing of the patent application
B) an invention cannot be used in the public domain prior to it being granted a patent
C) the inventor has to test his invention in the public domain, to measure its validity, before being granted a patent
D) the invention will come into the public domain once its term period has expired