1, soopat advantages: including semantic retrieval, advanced retrieval, batch retrieval, Chinese and English retrieval, IPC interpretation, license pledge litigation and other legal retrieval; The basic analysis icon is beautiful; Disadvantages: limited to 20 full-text PDF articles per day.
2. Baiteng advantage: multi-graph mode, unlimited number of articles, including patent value (reference); Disadvantages: Chinese retrieval/browsing/analysis is good, but foreign languages are average.
3. Wanfang Advantage: Affordable, reliable results and quick report. Disadvantages: too little information is included, and the information of foreign patent papers is not comprehensive.