The graph descirbes the time trend of the number of patents applications (by priority date) at EPO (European Patent Office), by total number and the number in single classes of technologies (pollution and waste; renewable energies; vehicle emissions and fuel economy; energy efficiency).
Data for single classes of patents are added to calculated the total number of patents in climate- energy technologies.
EEA standard re-use policy: unless otherwise indicated, re-use of content on the EEA website for commercial or non-commercial purposes is permitted free of charge, provided that the source is acknowledged (http://www.eea.europa.eu/legal/copyright). Copyright holder: European Environment Agency (EEA).
Development of patent search strategies for various areas of ‘environmental’ technologies have been developed at OECD and have been used to produce the dataset (see a website dedicated to the ENV-tech indicator). EPO patent counts are based on data received from the EPO (EPO Bibliographic database, publications up to December 2011).