Patents > Patents EBC> e-Alerts > USPTO e-COMMERCE e-ALERT [30 June 2009]


World Intellectual Property Organization (WIPO) Joins the Priority Document Exchange (PDX) Program

The United States Patent and Trademark Office (USPTO) is pleased to announce that the World Intellectual Property Organization (WIPO) has become the fourth foreign intellectual property office to participate in the Priority Document Exchange (PDX) program. Patent applicants now have the ability to electronically exchange priority documents, at no cost, between the USPTO and WIPO through the WIPO PATENTSCOPE® Priority Document Access Service (DAS).

The DAS enables a patent applicant claiming priority from an earlier application to rely on a copy of the priority document held in, or accessible via, the DAS, rather than providing a certified copy separately to each Patent Office when a patent application claiming priority is filed.

  • Please refer to the USPTO PDX Web site for guidance on using DAS to register U.S. priority documents to be accessible to the WIPO through DAS or to request the USPTO to retrieve registered priority documents from the WIPO through DAS.
  • Participation in DAS is voluntary for Patent Offices and applicants. Access the WIPO’s “Frequently Asked Questions” for additional user information regarding DAS.
  • For specific information on the WIPO’s participation in the PDX program, please access the USPTO Official Gazette Notice.
  • To learn more about DAS participating offices, please visit Priority Document Access Service.

For questions regarding PDX or the DAS programs, please contact the Patent EBC Customer Service Center by phone at 866-217-9197 (toll-free) or 571-272-4100 or send an e-mail the PDX support group at

Did You Know?

The United States Patent and Trademark Office (USPTO) has the ability to electronically exchange non-participating office priority documents between the Japan Patent Office (JPO) and the European Patent Office (EPO).

The following outlines this process:

  1. An applicant files a U.S. application claiming priority to an application previously filed with a non-participating office (e.g., an Australia national application filed with the Australian Patent Office).
  2. That applicant desires the USPTO to electronically obtain that priority document through the Priority Document Exchange (PDX) system from a corresponding JPO or EPO application file wrapper.
  3. A request to retrieve (e.g., form PTO/SB/38) is filed by the applicant, which identifies both the JPO or EPO application number and the application number of the non-participating office (e.g., Australia) priority application.
  4. 4. Non-participating office priority documents retrieved from the JPO or EPO will bear the IFW document title of "Priority documents electronically retrieved by USPTO from a participating IP Office."

For more information on priority document exchange between the JPO and USPTO, please access the Electronic Exchange of Non-Participating Office Priority Documents Between the JPO and the USPTO Official Gazette Notice. For PDX questions or user assistance, please e-mail the PDX support group at:


If you have any specific questions about PDX, DAS, EFS-Web, PAIR, PKI or any other component of our e-Commerce initiative, please contact the Patent EBC Customer Service Center at 866-217-9197 (toll-free) or 571-272-4100 or send an e-mail to "”.

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