Sonos Inc and Alphabet’s Google LLC will face off in a San Francisco federal trial on Monday over claims that Google copied Sonos’ patented smart-speaker technology in wireless audio devices like Google Home and Chromecast Audio.

The case is part of a sprawling intellectual property dispute between the former business partners that includes other lawsuits in the U.S., Canada, France, Germany and the Netherlands.

Sonos has asked the court for $90 million in damages from Google in the San Francisco case, down from $3 billion after U.S. District Judge William Alsup narrowed the case, according to a Google court filing. Sonos alleges Google infringed two of its patents related to multi-room wireless audio.

Google spokesperson Jose Castaneda said the case relates to “some very specific features that are not commonly used,” and that Sonos “mischaracterized our partnership and technology.”