What are the requirements for a cover letter in a patent protest?

This page is an FAQ based on guidance from the Manual of Patent Examining Procedure. It is provided as guidance, with links to the ground truth sources. This is information only: it is not legal advice.

A cover letter for a patent protest must include specific information to be properly processed. According to MPEP 1901.03:

“The cover letter must identify the application or patent number to which the protest is directed. It is important that the cover letter be clearly identified as a protest submission to ensure that the protest is matched with the intended application file and to ensure that the protest is considered timely if filed prior to publication of patent application.”

In addition to identifying the application or patent number, the cover letter should also clearly state that it is a protest submission to ensure proper handling and timely consideration.