How to check Japanese trademarks? Is it infringement? How to check whether a trademark is infringed? Users can check whether there are identical or similar trademarks on the same or similar goods at the Trademark Office of the State Administration for Industry and Commerce, and have determined whether the trademark used is infringing. They can also entrust a trademark agency to make inquiries. If they commit any of the following acts, It is an infringement of the exclusive rights of registered trademarks. First, the intended registered trademark is used on the same kind of goods without the permission of the trademark registrant. Second, the intended registered trademark is used on the same kind of goods without the permission of the trademark registrant. Registered trademarks, similar trademarks, etc.