Question 6: How to find the core patent?

Generally speaking, the core patent refers to the patent corresponding to the technology that must be used to manufacture products in a certain technical field, and it is difficult to avoid it by some circumvention design means. In addition to using derwent's rewritten title abstract to quickly read patents, there are also some structural means to help us quickly locate core patents. 1. Judging from the number of patent citations. Patent citation refers to other patent documents related to the technical content of this patent document stated by the applicant in the specification or confirmed by the examiner during the examination. Innovation contains patent citation information of 17 countries. Generally speaking, the more important a patent is, the more times it is cited. The most cited patent documents in a certain field are probably related to the core technology in this field. On the other hand, if a patent cites fewer other patents, it means that the patented technology is more basic; If a patent cites more other patents, it shows that the patented technology is relatively mature, mainly an improvement on the previous technology. 2. Judging by the number of patent members in the same family. The number of patents in the same subject is an important index to measure the economic value of patents, which can reflect the potential technical market and economic influence scope of an invention. Moreover, patent applicants will only submit patent applications to a country if they have expectations about its market. Therefore, it is helpful to understand the applicant's business strategy and market development direction to analyze which countries the applicant has applied for a patent for invention. By the same token, if a company applies for a large number of patents of the same family for a technology, it can also reflect the importance of this technology from one side. 3. Use patent litigation information to make judgments. Patent litigation in the United States usually costs a lot of money and time. If there is no huge conflict of interest behind a patent, enterprises will not rashly carry out patent litigation. Please refer to 17 for specific operation. 4. Judging by the investment background of the US government. Please refer to question 4 for specific operation. 5. Judging by the license information of EP patent. Please refer to question 6 for specific operation. Example: 1) When judging the importance of a patent by the number of patent citations, the following methods can be followed: 1. Click the function button to export &; Report; 2. Add the number of cited patents to the download list on the right and export them as csv files or Excel2007 files; 3. In the exported excel table, use the "sort" function to sort the column of cited patents in descending order, and you can get the number of patent citations from more to less. Note: When exporting data, patent data that has not been copied by the same family should be exported. Patent duplication will lead to data omission, because all members of the same family patent are examined in their own countries, and the comparison documents examined will be different. Example: 2) When judging the importance of patents by the number of patent families, the following methods can be followed: 1, copy the search results according to the Inpadoc family, and select all the representatives of the outermost patent families; 2. Click the function button Export in the search results page &; Report; 3. Add members of Inpadoc family (members of Inpadoc patent family) to the download list on the right and export them as files in csv format or Excel2007 format; 4. Use the formula to calculate the number of Inpadoc family members in the exported Excel table: = (len (trim (F2))-len (substitute (trim (F2), "",) /2+ 1, where F2 represents the cell coordinates of Inpadoc family members; 5. Use the "sorting" function in Excel table to sort the number of patents of the same family calculated in step 4 in descending order, and you can get the ranking of the number of patent family members from more to less.