What grounds can objections be raised on in a Post Grant Review?

Post Grant Review (PGR) is a procedure established under the America Invents Act (AIA) that allows a third party to challenge the validity of a patent on various grounds. The correct choice indicates that objections can be raised on any validity ground, which encompasses a broad range of issues including, but not limited to, prior art, novelty, non-obviousness, and written description.

This provision aligns with the purpose of PGR, which is to provide a comprehensive mechanism for addressing patent validity issues early in the life of a patent, thereby enhancing the quality of patents. Unlike some other forms of challenge, such as Inter Partes Review (IPR), which is limited to challenges based on prior art under 35 U.S.C. § 102 and § 103, PGR permits challenges based on a wider array of criteria.

In practical terms, this means a petitioner can raise a multitude of arguments related to patent validity, thus affording a robust avenue to contest potentially invalid patents. This broader scope helps ensure that patents granted meet all the statutory requirements, providing greater assurance to the public and maintaining the integrity of the patent system.