Taiwanese handset maker HTC on Thursday confirmed that it had filed a new lawsuit against Cupertino, Calf.-based Apple for patent infringement of its devices.

In the fresh salvo in its ongoing patent war with Apple, HTC has used patents it obtained from Google last week. In the fresh complaint filed in a Delaware court.

HTC's new complaint, which is the third in the series, alleges that Apple's Macintosh computers and mobile devices such as iPhones, iPods and iPads, infringe on four of its patents.

Those four patents were originally granted to mobile devices maker Motorola, but they were transferred to Google, which recently announced its plans to acquire Motorola. Google, last week, transferred all the four patents to the Taiwanese handset maker.

HTC has also amended its lawsuit filed against Apple in the U. S. International Trade Commission to assert five former Google patents, which originally were in the hands of Palm and Openwave, and were transferred to Google and then, last week, fell in the hands of HTC.

Speaking on the topic, HTC's general counsel Grace Lei said, "HTC will continue to protect its patented inventions against infringement from Apple until such infringement stops."

HTC is not the only electronics firm involved in legal battle with Apple. South Korean firm Samsung is fighting a number of patent lawsuits against Apple in several countries across the world.