On Friday, the U.S. International Trade Commission said that it would probe allegations brought by Alphabet (NASDAQ: GOOGL) Inc’s Google against Sonos (NASDAQ: SONO), claiming the latter violatd patents of Google by importing few audio components.

The new complaints against Sonos add to an existing patent fight between the two associated with smart-speaker technology. This includes lawsuits in California, France, Canada, the Netherlands and Germany. In January, Sonos had won an import ban on some Google devices from the trade commission.

In August, Google had filed lawsuits in federal court of California stating Sonos’ latest voice-assistant technology allegedly violates various Google patents. Sonos, however, called these lawsuits intimidation tactics.

The trade commission asserted that it would set a date for completing its inquiry into Google’s latest allegations within 45 days and schedule an evidentiary hearing.