Huawei has filed lawsuits in Germany, France, and Hungary against ZTE for patent and trade mark infringement.

According to company, the lawsuits were filed on the basis that ZTE is infringing a series of Huawei’s patents relating to data card and LTE. As per Huawei, ZTE illegally used a Huawei-registered trademark on some of its data card products.

"These lawsuits were commenced after ZTE failed to respond to cease and desist letters requiring the company to stop carrying out the infringing acts that are the basis for these proceedings. Huawei had also actively invited ZTE on numerous occasions to enter into cross-patent licensing negotiations but was equally unsuccessful," company said in the statement.

ZTE was "astonished" that Huawei had taken legal action against it, reports ZDNet.

"As a company listed on the Hong Kong stock exchange, ZTE respects and adheres to international intellectual property laws and regulations without reservation, and absolutely rejects that there has been any patent and trademark infringement," ZTE said.