customer number

What is customer number?

customer number meaning in Property terms is (previously referred to as “payor number“) – a number assigned by the Office that is used to simplify the submission of an address change, to appoint a practitioner, or to designate the fee address for a patent. Customer numbers are primarily used by attorneys and law firms, and must be requested using the MPEP 403 for more


reference: Glossary – United States Patent and Trademark Office