What subject does MPEP 2600 cover?

MPEP 2600 specifically covers Inter Partes Reexamination, which is a process that allows third parties to challenge the validity of a patent after it has been granted. This section of the MPEP details the procedures, standards, and requirements that must be followed during this reexamination process.

Inter Partes Reexamination provides a mechanism for patent owners and challengers to have the validity of a patent assessed by the United States Patent and Trademark Office (USPTO) while the patent remains in effect, thus maintaining a balance between protecting patent rights and ensuring that invalid patents can be challenged.

The other options pertain to different areas of patent law that are covered in other sections of the MPEP. For example, citations of prior art provide guidance on how prior art can be cited in the context of examinations. Meanwhile, design patent procedures and utility patent applications are covered in their respective sections, focusing on different aspects of patent types and application processes. Understanding the focus of each section helps patent practitioners navigate the MPEP efficiently, knowing where to find specific procedures and information.