401 Processing New Applications 401.01 Filing Receipts 401.02 Serial Numbers and Series Codes 401.03 Data Entry 401.04 Creation of Application Files 402 Electronic Application and Registration Files 402.01 USPTO No Longer Creates Paper Copies of Certain Trademark-Related Documents 403 Correspondence Returned as Undeliverable 404 Documents Not Returnable 405 Fees 405.01 Credit Cards 405.02 Checks 405.02(a) Personal Checks 405.03 Deposit Accounts 405.04 Refunds 405.05 Electronic Funds Transfer 405.06 Payments Refused or Charged Back By Financial Institutions