What information is required to identify another application or patent for interference?

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.

To identify another application or patent for interference, the following information is typically required:

• Application serial number (for applications)
• Patent number (for patents)

The MPEP 2304.02(a) states:

“Usually an applicant seeking an interference will know the application serial number or the patent number of the application or patent, respectively, with which it seeks an interference. If so, providing that number will fully meet the identification requirement of 37 CFR 41.202(a)(1).”

This information is generally sufficient to meet the identification requirement for suggesting an interference.