How to search for Japanese patents?

1. Japan Patent Office will provide free electronic documents and retrieval systems of all Japanese patents, utility models and designs published since 1885 to the global public through IPDL on its website (http://www.jpo.go.jp/). The digital library of industrial property rights is designed in English (PAJ) and Japanese. The English version contains only Japanese patents, utility models and trademarks, while the Japanese version also includes design materials.

2. Input method:

1). Direct visit: http://www.jpo.go.jp/.

2). Enter through the China National Intellectual Property Administration website link:

Patent Search in China National Intellectual Property Administration/Foreign Countries, Hong Kong, Macao and Taiwan-Online Patent Search of Japan Patent Office (English Version) Open the website, select "Patent", and click "IPDL" at the bottom of the page to enter the digital library of industrial property in Japan. Click "Turn to Japanese Page" in the upper right corner to complete the conversion between English interface and Japanese interface.

3) patent search (Japanese interface):

The main functions of this page include: special case retrieval, artist retrieval, information retrieval and trial retrieval.

"Searching for new cases of licenses and utility models": mainly searching for patents of inventions and utility models;

"artist search": mainly searching for Japanese design patents;

"After information retrieval": mainly searching the legal status of Japanese patents;

"Search": mainly the announcement of the judgment made on some patent applications with review procedures.

There are 12 groups of the same search input windows on the search interface of the invention and utility model announcement database, and each group consists of two input windows. They are: file type (patent file type code) and file number (number). The logical relationship between the patent document category code and the number retrieval input window is "AND"; However, the logical relationship between each group of search input windows is "or", and multiple document numbers can be input at the same time for search.

I) input mode

Use a two-digit calendar before 1999 and a four-digit calendar after 2000; For example, search for patent applications published by inNo. 123456 in 1997 and enter "h09-123456"; Conversion between Japanese calendar year and AD year: Heisei = h (+1988); Showa = s (+1925); Dazheng = t (+1911); Meiji =M(+ 1867).

II) The retrieval results show that if the retrieved document exists, the system will automatically set a hyperlink, and then click it to browse the full text of the patent.