How are SIRs published and numbered?

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.

According to the MPEP, SIRs are published and numbered as follows:

• Published SIRs are sequentially numbered in a separate “H” series, starting with number “H1”.
• A notice of the publication of each statutory invention registration is published in the Official Gazette.
• The SIR is mailed to the requester at the correspondence address provided.

The MPEP states: Published SIRs are sequentially numbered in a separate “H” series, starting with number “H1”.