Chinese patent in Google patent public data

Research-ready Chinese invention patent dataset (1985-2024) from Google Patent Public Data, including: (1) 25.4 million processed patent records in 13 relational tables, (2) GPPD-ADCP Master Key—a validated crosswalk with official CNIPA records, and (3) open-source processing scripts. The dataset has been systematically validated against the official CNIPA authority file, achieving 99.96% coverage rate.