HomeIP-GuideJapan General informationInvention (Paris Convention) Japan


  • International Country Code:

  • Time Zone:

    UTC/GMT +09:00
  • Currency:

    Japanese Yen (JPY)

Patent registration in Japan (non-PCT)

from 755.00
Total Number of Claims
Number of Priorities
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  • Patent fees

Fees associated with filing patent applications in Japan, as well as other patent fees, are available in the fee calculator.

  • The term for filing patent application in Japan

The term for filing a conventional patent application in Japan is 12 months from the date of priority. Restoration of this term is not possible.

  • Minimum filing requirements in Japan

To obtain a filing date, it is necessary to provide the Japan Patent Office with:
- request to grant a patent in Japan;
- description of the invention;
- applicant's and inventor's details.

  • Language of the Japanese patent application

An applicant may file a Japanese patent application under Paris Convention in any foreign language. A Japanese translation should be provided within 16 months from the filing date or earliest priority date. However, if a patent application is based on a divisional, converted, or utility model application, the applicant must submit a translation within two months from the filing date of that application. If a translation is not submitted within the above-mentioned periods, a notice of failure to file a translation will be issued by the Japan Patent Office. The applicant must provide a translation within two months from the date of said notice.

  • Priority document

To confirm the priority right, the applicant must submit a certified copy of the priority document within 16 months from the priority date. A translation of the front page into Japanese is required. Some countries' priority is admitted without a certified copy if DAS code is provided or there is a mutual agreement.

  • Power of Attorney requirements

A POA is not required for patent registration in Japan. It is necessary to provide a POA for some special proceedings such as assignment and appeal filing.

  • Substantive examination request

A request for substantive examination must be filed within three years from the date of filing of the patent application in Japan. It is possible to request accelerated examination under PPH.

  • Novelty grace period

Any form of disclosure (including sales) by the inventor within twelve months prior to the filing date of a patent application in Japan does not disprove the novelty of an invention.

  • Grant and patent maintenance

The official grant fee for a patent in Japan should be paid within 30 days from the date of receipt of the Notice of Allowance. The annuities for the first three years should be paid simultaneously with the grant fee. During the 3rd year of the patent validity, the 4th annuity should be paid, and so on. The annual maintenance fee depends on the number of claims. It is possible to pay the annuities in an accumulated manner.

  • Representation by a patent attorney

For foreigners, it is necessary to perform patent prosecution in Japan through a registered Japanese patent attorney.

  •  Note

Online Search Database for Japanese Patents and Utility Models.

Brief summary is based on the information provided by YuNeed International Patent Office on 17.01.2020
Please contact us if the above information contains any discrepancies with Japanese IP Laws