Legal basis: Article 6 of the Measures for the Reduction and Exemption of Patent Fees. Where the patent applicant or patentee requests to reduce the patent fee, it shall submit the request for reduction and relevant supporting documents. Where a patent applicant or patentee submits a patent fee waiver request through the patent affairs service system and is approved for filing, it is only necessary to submit a fee waiver request without submitting relevant supporting documents within a natural year.