MPEP 2406.03
Possible Loss of U.S. Filing Date in Other Countries

This is the Ninth Edition of the MPEP, Revision 08.2017, Last Revised in Januay 2018

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2406.03    Possible Loss of U.S. Filing Date in Other Countries [R-07.2015]

Those applicants intending to file patent applications in a country other than the United States relying upon biological material that must be deposited to satisfy the requirements of 35 U.S.C. 112 when the application is filed in the United States are cautioned that in many countries the deposit must be made before the filing date of the priority application in order to obtain foreign priority rights. Thus, while the deposit of a biological material subsequent to the effective filing date of a United States application may be relied upon to comply with 35 U.S.C. 112, an applicant may not be able to rely on the filing date of such a U.S. application if a patent is sought in certain countries other than the United States.