A Taiwanese technology company on Monday accused Google Inc. in Delaware federal court of infringing two motion-sensing patents with its line of Pixel cellphones.

CyWee Group, which claims “one of the most significant” patent portfolios in the tech industry, said in a 40-page complaint that Google’s Pixel, Pixel 2, Pixel XL and Pixel 2 XL phones use its patented systems for processing a phone’s motion and orientation. The technology, CyWee said, has become central to navigation, gaming and, increasingly, augmented-and virtual reality applications for mobile devices.