What is the role of an Interference Practice Specialist (IPS) in patent interference proceedings?

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.

An Interference Practice Specialist (IPS) plays a crucial role in patent interference proceedings. According to MPEP 2304.04(a), the IPS works with the examiner to suggest interferences to the Board. The IPS has several responsibilities:

• Reviewing the examiner’s suggestion for interference
• Potentially requiring the examiner to prepare a memorandum for the Board on specific subjects
• Possibly requiring the examiner to participate in a conference with the Board to discuss the suggested interference

The MPEP states: “The IPS may require the examiner to prepare a memorandum for the Board on any of these subjects. The IPS may require the examiner to participate in a conference with the Board to discuss the suggested interference.”