When analyzing the invalidation of patent, compare your patent application documents with all documents published at home and abroad before the application date, including publications, patent documents, periodicals and magazines. It also includes products and methods publicly used before the filing date. After comparison, judge whether your patent is novel and creative.
If the patent infringes, compare the claim 1 in your patent with the product involved. If the product involved contains all the technical features in claim 1, it is infringing, otherwise it is not infringing.