Sequence Listing Resource Center – United States Patent and Trademark Office

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The Sequence Listing Resource Center includes information about preparing and filing a sequence listing, updates regarding WIPO Standard 26 (ST.26), and other useful resources for patent applications that include biosequences.   
The answers to many sequence listing related questions can be found in the information above. If you cannot find the answer to your question, contact the USPTO sequence help desk at 571-272-2510 or email SequenceHelpDesk@uspto.gov.
The answers to many sequence rule related questions can be found in the information above. If you cannot find the answer to your question, contact our Office of Patent Legal Administration at 571-272-7701 or email PatentPractice@uspto.gov.
For general assistance with filing a patent application, contact the Inventors Assistance Center at 800-786-9199 (toll-free), 571-272-1000 (local), or 800-877-8339 (TTY/TDD).  
For questions regarding sequence listing compliance or submission in PCT applications and U.S. national phase applications, contact the PCT help desk at 571-272-4300 between 8:30 a.m. and 5 p.m. ET, Monday through Friday, or by fax at 571-273-0419. General PCT related inquires that are not case-specific or time-sensitive may be emailed to PCTHelp@uspto.gov
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