What is a ‘file wrapper’?

A ‘file wrapper’ refers to the official record of proceedings in the United States Patent and Trademark Office (USPTO) for a particular patent application or granted patent. It contains all the documents and correspondence related to the prosecution of the application or maintenance of the patent. This includes the original application, Office actions, applicant responses, amendments, and other relevant documents. The file wrapper provides a complete history of the examination process and is important for understanding the scope and validity of a patent.