An additional filing fee for any nonprovisional utility patent application filed under 35 U.S.C. 111, including continuing applications, that are not filed in DOCX format was set to take effect on January 1, 2022.  However, on November 22, 2021, the USPTO issued a final rule delaying the effective date of the new fee until January 1, 2023.  The reason for the delay is to give both the USPTO and applicants more time to adjust to DOCX filing procedures and to address known issues.