Tech giants Ant Group and Tencent have topped a new list of the biggest holders of authorised patents for blockchain technology in China. The “2021 China High Correlation Biockchain Authorised Invention Patent Ranking (Top 100)” (2021年中国高相关度区块链授权发明专利排行（TOP100）) released by IPRdaily and incoPat on 27 September points to surging growth in China’s blockchain patent volume since 2019.…