What happens if there are multiple correspondence addresses on file for a patent application?

When multiple correspondence addresses are on file for a patent application, the USPTO follows a specific procedure. According to MPEP 601.03:

‘Where more than one correspondence address is specified, 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.’

This means that the USPTO will choose one address to use, potentially favoring a Customer Number address if provided. To avoid confusion, it’s best to ensure only one clear correspondence address is on file. For more information, visit MPEP 601.03.

To learn more:

• multiple correspondence addresses
• patent application
• USPTO procedure