http://www.epo.org/news-events/news/2021/20210427.html
Content reproduced from the Website of the European Patent Office as permitted by their terms of use. The number of patents for inventions related to low-carbon energy technologies around the world grew by an average rate of 3.3% per year in the 2017-19 period, a new joint study published today by the European Patent Office (EPO) and the International Energy Agency (IEA) shows.