What is the USPTO policy on filing duplicate copies of correspondence?

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Source: FAQ (MPEP-Based) BlueIron Update: 2024-09-09 10 Rules 5 Related FAQs 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. The United States Patent and Trademark Office (USPTO) generally discourages the filing of duplicate copies of correspondence in patent applications, patents, or other proceedings. According to MPEP 502.04 : The filing of duplicate copies of correspondence in the file of an application, patent, or other proceeding should be avoided, except in situations in which the Office requires the filing of duplicate copies. The USPTO may dispose of duplicate copies to streamline processing. However, it’s important to note that separate copies are required for different files, even if the content is identical. Related Rules from the Manual of Patent Examining Procedure 10 rules Collapse Patent and Trademark Office Not Open on Weekends and Holidays MPEP 502 Permitted Addresses Required for Trademark Correspondence MPEP 502 Methods for Submitting Patent Applications MPEP 502 Recommended Proper Application Identification Required for Correspondence MPEP 502 EFS-Web Enables Electronic Filing of International Design Applications MPEP 502.05 Resubmission Within Two Weeks Required MPEP 502 Facsimile Transmissions for Correspondence Must Include Application Identifiers MPEP 502 Recommended Identification of Previously Filed Patent Application MPEP 502 Required Correspondence for Patent Applications Must Include Specific Information MPEP 502 Recommended Confirmation of Application Transmission Required for Filing Date MPEP 502 Other Related FAQs 5 FAQs Collapse Can filing duplicate copies of patent correspondence cause processing delays? When are duplicate copies of patent correspondence required? What is the purpose of requiring separate copies for different patent files? How does the USPTO handle unnecessary du...