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.
A three-way restriction requirement in a patent application can only be made under specific conditions. According to MPEP 806.05(i):
“Where claims to all three categories, product, process of making, and process of use, are included in a national application, a three way requirement for restriction can only be made where the process of making is distinct from the product.”
This means that for a three-way restriction to be valid, the examiner must demonstrate that the process of making is distinct from the product. If this distinction cannot be shown, a three-way restriction is not appropriate.