Trademark infringement notarization is mainly divided into two categories, foreign-related notarization and civil notarization. If a trademark is found to be infringed, you can go to a notary office to notarize it and keep the evidence for future trademark rights protection and litigation. You can also go to the industrial and commercial department to investigate and deal with it, and it can be notarized. In general litigation, notarization is better than ordinary documentary evidence. There are notary offices all over the country. You can search the website of the local notary office.