Legal analysis: 1 years, and the period of validity of a registered pharmaceutical trademark is 1 years. The period of validity of a registered trademark is ten years, counting from the date of approval. It can be renewed six months before the expiration of the validity period and the renewal fee can be paid. Each renewal is still valid for ten years.

legal basis: 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.