Gongwell Translation Center
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Japanese prior art search

Type of our Japanese Patent Search

Whether you need a thorough prior art search (patent search) for either offensive or defensive patent litigation, or you need information to decide the novelty/validity of an invention, we can help.

The annual 450,000 Japanese patent publications represent about half of the searchable patent prior art. Even if you have already had a perfect prior art search in English (US, PCT and Europe), you may miss about 50% of the total patent applications filed worldwide if you do not search in Asia.

Searches We Provide:

  • Validity Search
  • Right-to-Use Search
  • Novelty / Patentability Search
  • State-of-the-Art Search


Our Search Deliverables:

After the search, you will receive following documents:

A search report summarizing the search strategy, a list of the prior art (patent and/or non-patent literature) found, and the relevancy ranking based on our searcher and reviewer’s opinion;

  • Semi-machine English translation of the title, abstract, and other bibliographical information of all the prior art;
  • PDF files of all the prior art;
  • Machine translation output of the patent information;
  • Search formula and hits

Search Report Samples:









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