What is the format of the patent?

ZL is the pinyin abbreviation of patent, indicating that the patent has been authorized.

2009 is the year of application.

1 is the type of invention patent.

The seven numbers in the middle are serial numbers.

The last bit is the check code.

Patent documents usually include: claims, specifications, drawings of specifications, abstracts and abstract drawings. The specific format can refer to the patent full-text format published by the Patent Office.