We've had our trademark squatted in China. We didn't bother to register it, and now it's a problem if China becomes a big market for the SaaS I work for. There's 'Madrid System' that covers EU and other countries, but yeah, it's a good idea to have your TM registered in your key markets. To learn more about Madrid system, just google it or see https://www.wipo.int/madrid/en/#:~:text=The%20Madrid%20Syste....