This dispute has gotten patently uglier.

An electronics manufacturing company listed on Shanghai’s new high-tech board is striking back against its Taiwan-based rival in an escalation of disputes surrounding patented technologies.

The drama began in July, when Taiwan-based Delta Electronics sued Appotronics in a court in the southern Chinese city of Guangzhou. Delta said an Appotronics projector model produced and sold in China infringed three of its patents, according to a statement filed by Appotronics to the Shenzhen Stock Exchange.

Delta demanded Appotronics stop manufacturing and selling the product and cough up 48.4 million yuan ($6.9 million) in compensation, the equivalent of 72.7% of Appotronics’ net profit in the first half of this year.

Now, Appotronics has filed a counterclaim against Delta’s accusations and has asked the court to declare Delta’s patent invalid, Appotronics president Bo Lianming told Caixin on Sunday.

How will things play out? Read the full story later today at caixinglobal.com.

Contact reporter Tang Ziyi (ziyitang@caixin.com)