202.03(a)(i) Processing Fee for Payment Refused or Charged Back By Financial Institution
There is a fee for processing any payment refused (including a check returned unpaid) or charged back by a financial institution. 37 C.F.R. §2.6(b)(10). See TMEP §405.06. However, this is not a filing date requirement. If an applicant resubmits the filing fee without paying the processing fee, the USPTO will give the application a filing date as of the date of resubmission, and the examining attorney will require submission of the processing fee during examination.