Are all Numeric Identifiers in a “Sequence Listing” mandatory?

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.

No, not all Numeric Identifiers in a “Sequence Listing” are mandatory. The MPEP 2424.02 states: “The submission of those items of information designated with an “M” is mandatory. The submission of those items of information designated with an “O” is optional.“

This means that certain identifiers are required for all sequence listings, while others are optional and may be included at the applicant’s discretion. It’s important for patent applicants to carefully review the requirements and include all mandatory identifiers to ensure compliance with patent office regulations.