Can multiple correspondence addresses be used for a single patent application filed after September 16, 2012?

While it’s possible to include multiple correspondence addresses for a single patent application filed after September 16, 2012, the USPTO will ultimately select only one for official use. Here’s what you need to know:

• Multiple addresses can be provided in the application
• The USPTO will choose one address as the official correspondence address
• If a Customer Number is provided, it may be given preference
• Only the selected address will receive official communications

The MPEP 403.01(a) states:

Pursuant to 37 CFR 1.33(a), if an applicant includes more than one correspondence address (37 CFR 1.33(a) ) in a patent application, the Office will select one of the specified addresses for use as the correspondence address and, if given, may select the address associated with a Customer Number over a typed correspondence address.

To ensure clear communication, it’s best to designate a single, preferred correspondence address for your application. If you need to change this address later, you can file a request with the USPTO.

To learn more:

• USPTO
• correspondence address
• patent application
• Customer Number