What are the file name requirements for ASCII plain text sequence listings?

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.

According to MPEP 2422.03(a), ASCII plain text sequence listings must adhere to specific file naming conventions:

• The file name must not exceed 60 characters in length.
• The file name should consist of the following elements in order: [name_of_applicant], SEQ.txt.
• No spaces or other non-standard characters are allowed in the file name.

The MPEP states: “The recommended file name format is ########SEQ.txt. The ######### is an optional 9-digit application number (if known) or a 9-digit number uniquely identifying the sequence listing file.” It’s important to follow these guidelines to ensure proper processing of your sequence listing submission.