The amortization period of trademark rights is agreed upon, but there is no agreement that the amortization period cannot be less than ten years. According to Article 67 of the Regulations for the Implementation of the Enterprise Income Tax Law, the amortization expenses of intangible assets calculated by the straight-line method are allowed to be deducted. The amortization period of intangible assets shall not be less than 1 years. As an investment or transferee of intangible assets, if the service life is stipulated in relevant laws or contracts, it can be amortized in installments according to the stipulated or agreed service life. Expenditure on purchased goodwill is allowed to be deducted when the enterprise is transferred or liquidated as a whole. Legal objectivity:

Article 39 of the Trademark Law of the People's Republic of China is valid for ten years, counting from the date of approval of registration.