What is a requirement for information under 37 CFR 1.105?

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 requirement for information under 37 CFR 1.105 is a request made by the patent examiner to the applicant for additional information that is deemed necessary for the examination of a patent application. According to the MPEP, The requirement must clearly indicate that a requirement under 37 CFR 1.105 is being made, the basis for the requirement, and what information is being required. This requirement is typically used to gather information that is not readily available to the examiner but is necessary to properly examine the application.