SAN FRANCISCO — Attorneys for Google Inc. are striking back at a federal class action that accuses the company of monopolizing the mobile search sector by pressuring Android smartphone makers to install Google as the default search app on their devices.

In a motion to dismiss filed late Friday, Bingham McCutchen partner Brian Rocca argued Google did not break antitrust laws or harm customers through its deals with Android partners. Google allowed the manufacturers to preload devices with a suite of popular Google-owned apps, including Google Maps and YouTube, in exchange for making Google the default search engine.