noun
patent file wrapper; patent correspondence file
A technical term in patent law referring to the collection of documents exchanged between an inventor (or applicant) and the patent office during the examination of a patent application. Not a general-purpose word.
特許庁に包袋の閲覧を請求した。
I requested to inspect the patent file wrapper at the Patent Office.
包袋には審査経過の記録が含まれている。
The file wrapper contains a record of the examination process.