Do I need to sign a power of attorney to represent the invention patent?

You need to write a power of attorney to apply for a patent. According to the relevant laws and regulations, applying for a patent and handling other patent affairs with the State Council Patent Administration Department is carried out by entrustment, and a power of attorney shall be submitted, indicating the authorized authority.

legal ground

Article 15 of the Detailed Rules for the Implementation of the Patent Law of People's Republic of China (PRC)

To apply for a patent in writing, the applicant shall submit the application documents in duplicate to the patent administration department of the State Council.

To apply for a patent in other forms prescribed by the administrative department for patent in the State Council, the prescribed conditions shall be met.

Where the applicant entrusts a patent agency to apply for a patent and handle other patent affairs with the patent administration department of the State Council, it shall also submit a power of attorney, indicating the authorization authority.

If there are more than two applicants who have not entrusted a patent agency, unless otherwise stipulated in the request, the first applicant specified in the request shall be the representative.