According to the thirty-eighth the Trademark Law provides that the following acts shall be an infringement of registered trademark: (1) without the authorization of the proprietor registered trademarks, in the same or similar goods using the same or registered trademarks of their similar to the trademark; (2) knowingly sells commodities bearing counterfeited registered trademark; (3) forging a registered trademark of another person without authorization or selling forged or made without authorization of the registered trademark; (4) to someone else's registered trademark causing other damage to the right. 
 Trademark infringement case approach 
 First, we must pay attention to the collection of evidence. Only in the case of sufficient evidence, can help the judicial administrative law enforcement agencies or judicial acts are violations of a to be identified as soon as possible. Therefore, the case for evidence of a prerequisite. In a nutshell, the evidence mentioned here mainly refers to the following aspects: 1, the infringed party's prior rights documents (including trademark registration, patent proof of copyright registration certificate, and proof of awards relating to the case etc.). 2, samples of the products by the infringer. 3, samples of the infringing products. 4, proof of purchase of infringing products. This mainly refers to the purchase invoice. Indicated on the invoice must be the name of the infringing products, the location of infringing products purchased, the price of infringing products, sales person, the name and so on. 
 Second, agencies should be to consult a professional. Professionals will conduct a preliminary analysis of the case, and details will provide professional advice. 
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