1, background technology is an integral part of the specification; Article 17 of the detailed rules for the implementation of the patent law stipulates that the background technology useful for understanding, searching and examining the invention or utility model shall be clearly stated in the background technology; If possible, cite documents that reflect these background technologies.
2. In a patent application, the background technology generally includes the following parts: introduction, technical field, existing technology, shortcomings of existing technology or problems existing in existing technology.