HTC fired another salvo in its legal battle with Apple, filing complaints with the US International Trade Commission and the District Court of Delaware. It alleges patent infringement “by Apple’s Mac computer product lines as well as Apple’s iPhone, iPad and iPod product lines.” The Taiwanese smartphone pioneer said that the technology involved is related to WiFi networking support, and processor technology which enables the integration of a PDA and a mobile phone into a single device, “providing users with a true smartphone experience.”

The suits cite three patents obtained in 2008 and 2010, and according to Reuters, HTC is seeking “compensatory damages as well as triple damages for willful infringement.” According to reports, several of the patents involved were bought by HTC from ADC Telecommunications earlier this year. HTC has been bolstering its intellectual property portfolio through acquisitions, having also inked a deal with S3 Graphics, which owns a patent involved in an ITC suit against Apple.

In a statement, Grace Lei, general counsel for HTC, said that “this is the 3rd case before the ITC in which Apple is infringing our intellectual property.  Apple needs to stop its infringement of our patented inventions in its products.” Similarly, Apple has made several complaints to the ITC about HTC, and last week the Commission said that it will investigate the latest claims made by Apple. Last month, HTC said it would use “all means possible” to defend itself, which now seems to include launching additional attacks against its rival.

Previously, HTC said it was “dismayed” by a complaint brought by Apple, which is alleging that HTC is infringing some of the same patents involved in the iPhone maker’s equally acrimonious spat with Samsung.