What is considered ‘substantive involvement’ in a patent application?

Source: FAQ (MPEP-Based)BlueIron Update: 2024-09-30

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.

The MPEP doesn’t provide a precise definition of ‘substantive involvement’, but it does offer guidance on who is considered substantively involved in the preparation or prosecution of a patent application. According to 37 CFR 1.56(c), this includes:

“Every other person who is substantively involved in the preparation or prosecution of the application and who is associated with the inventor, the applicant, an assignee, or anyone to whom there is an obligation to assign the application.”

The MPEP clarifies that this does not include “typists, clerks, and similar personnel who assist with an application.” Substantive involvement typically refers to individuals who make significant contributions to the content of the application or decisions about its prosecution, rather than those performing purely administrative tasks.

Topics: MPEP 2000 - Duty Of Disclosure MPEP 2001.01 - Who Has Duty To Disclose Patent Law Patent Procedure
Tags: But For Materiality, Disclosure Basics, Disclosure Individuals, Inequitable Conduct Elements, Materiality Standard