Logo similarity of 80% is an infringement. Without the permission of the trademark registrant, in the same kind of goods or similar goods, the use of the same or similar trademark with its registered trademark pm, is an infringement of the exclusive right to use the registered trademark.
Legal objective:The Chinese People's **** and the State Trademark Law, Article 52 of the following acts, are infringement of the exclusive right to use registered trademarks: (a) without the permission of the trademark registrant, the use of the same or similar trademarks on the same goods or similar goods with their registered trademarks; (b) the sale of goods infringing on the exclusive right to use registered trademarks; (c) counterfeiting, Unauthorized manufacture of other people's registered trademarks or the sale of counterfeit, unauthorized manufacture of registered trademarks; (d) without the consent of the trademark registrant, replacement of its registered trademark and the replacement of the trademark of the goods and put into the market; (e) to other people's exclusive right to use the registered trademark to cause other damage.