Hello, according to the law, people who hold pirated software are not liable for compensation unless they do not know and have no reasonable reason to know that the software is pirated, but they must also stop and destroy the pirated software. If destroying the software will cause heavy losses to the user, the user may continue to use it after paying a reasonable fee to the software copyright owner.

So buying software knowing it is pirated constitutes infringement.

Article 30 of the "Computer Software Protection Regulations"

If the holder of a copy of the software does not know and has no reasonable reason to know that the software is an infringing copy, he shall not be liable for compensation. liability; however, the use of the infringing copies should be stopped and destroyed. If stopping use and destroying the infringing copy will cause heavy losses to the user of the copy, the user of the copy may continue to use it after paying a reasonable fee to the software copyright owner.

But generally what is infringed is copyright rather than trademark rights. Hope this helps.