Who knows which company pays the lowest patent fee and agency fee every year?

The annual fee paid abroad is different from that paid at home. If there are many countries, it will be more complicated. You should monitor the time by yourself. Otherwise, we will have to pay the extension fee when it expires. The agency fee is unlikely to be 100 yuan, and the agency fee of 100 yuan may be the annual fee of China patent. Foreign companies usually have to entrust foreign companies to pay. Because foreign labor costs are high, ranging from hundreds to thousands. As for the relatively low institutions, I know that the annual fee for specialized foreign-related patents in Shenzhen is relatively low. You can search online.