In Civil cases documentation has to be proved for recording of evidence. Original document be entitle substitute by a certified copy.
"Filing" typically means visiting a court clerk at a filing window; paying a filing fee by cash, check, or credit card; and submitting the document to be filed (usually the original and two copies). For each document filed, the court clerk inspects the document to ensure it complies with the court's rules on how legal documents should be formatted and verifies that the case number and caption are for a valid case. (If the document is the first filing in a case, the court clerk assigns a new case number and opens a new file for the case.)
Next, the court clerk stamps all copies with a large stamp that indicates the name of the court and the date the document was filed, then keeps one copy for the court's files and returns the remaining copies to the filer for the filer's records and for mailing, personal delivery, or some other form of delivery (as required by the governing rules) on the opposing party in the case. The clerk then adds the document to the docket for the case as well as any related deadlines or events.
Some courts now have electronic filing systems, which allow lawyers and sometimes self-represented parties to simply upload Portable Document Format ("pdf") electronic documents to a secure website maintained by the court or a private commercial service.