Power battery maker China Aviation Lithium Battery Technology (CALB) confirmed it has received a patent lawsuit against the company by , saying it has submitted a request for invalidation of those patents to the China National Intellectual Property Administration.

Because the case is already in litigation, the company is not disclosing specifics in order to avoid any impact on the trial of the case, CALB said Monday.

Previously, on July 21, CATL announced that it had formally sued CALB for patent infringement, claiming that CALB's allegedly infringing batteries are in tens of thousands of vehicles.

If CALB loses the case, its entire product line could be required to be banned, wallstreetcn.com said, citing legal sources.

CALB said the products it provides to customers have been thoroughly risk investigated by a professional IP team and believes its products do not infringe on the IP rights of others, according to jiemian.com.

CATL is the largest power battery supplier in China, with 25.76 GWh installed in the country from January to June and a market share of 49.1 percent, according to the China Automotive Battery Innovation Alliance (CABIA).

CALB ranked fourth with 3.63 GWh of power batteries installed in China in the same period, with a market share of 6.9%.

CALB had said on June 7 that it would IPO in 2022.

CALB's chairman Liu Jingyu said the company's customers include , Changan, SAIC-GM-Wuling, GAC Toyota, Honda and .

CALB is one of the battery suppliers for the Wuling Hongguang Mini EV, a model that has set several sales records in China.

Founded in 2015, CALB is engaged in the development, production and sales of new energy batteries and power systems, and its shareholders include GAC Capital, Sequoia Capital, , according to data provider Qichacha.