A Doctrine That Says a Patent May Not Be Granted

question 9

Multiple Choice

A doctrine that says a patent may not be granted if the invention was used by the public for more than a certain period of time prior to the filing of the patent application is known as:

• A) the public service doctrine
• B) the public use doctrine
• C) the unfair doctrine
• D) the bar to patents doctrine
• E) None of these are correct.