Tim Cook China

Tim Cook during the China Mobile launch earlier this year

Amid Apple’s push to expand its presence in China with its new deal with China Mobile, AFP reports Apple is suing the State Intellectual Property Office in China as well as Zhizhen Network Technology.

The dispute is not a new one as Zhizhen Network Technology previously sued Apple over disputes with Siri and its Xiao i Robot product, but this time the roles are reversed. Furthermore, Apple is filing suit against the patent office responsible for protecting patent rights after the agency declined to invalidate Zhizhen’s patent, according to the report.

The case will be heard on Thursday by the Beijing Number one Intermediate People’s Court, but no ruling has been announced for the case heard last July yet, so we it may be some time before this concludes.