1. The protection principle of my country’s trademark law is to register first, and the exception protection for trademark rights that have been used first is limited. It only targets well-known trademarks and trademarks with a certain degree of popularity registered with others. . Therefore, Factory B can file an infringement investigation request with the Industry and Commerce Bureau and complain that A has infringed its exclusive right to register a trademark.

2. If A does not have corresponding evidence, then A will be judged as infringement, and the infringement date will be from March 1990.

3. As Party A, you can continue to use it. The legal method adopted is: filing a dispute application with the National Trademark Office Review and Adjudication Committee on the grounds that you have used it first and Party B has maliciously registered it, but you need to provide corresponding evidence. , but A must apply before March 1995. At the same time, explain the situation to the Industrial and Commercial Bureau and ask to wait for the outcome of another case.