Can filing duplicate copies of patent correspondence cause processing delays?

Yes, filing unnecessary duplicate copies of patent correspondence can potentially cause processing delays at the USPTO. The MPEP 502.04 explicitly states:

When the Office does not require duplicate copies of a paper, the filing of multiple copies may cause a delay in processing by the Office.

This is one of the reasons why the USPTO discourages the submission of duplicate copies unless specifically required. To ensure efficient processing of your patent application or correspondence, it’s best to avoid submitting unnecessary duplicates.

To learn more:

Topics: MPEP 500 - Receipt and Handling of Mail and Papers, Patent Law, Patent Procedure
Tags: patent correspondence, USPTO