Errors in patent applications can be corrected.
There are four ways to modify patent application documents.
1. Active modification: The applicant can withdraw his patent application at any time before being granted the patent right.
2. Passive modification: After examination, China National Intellectual Property Administration issued a notice of correction or a notice of examination opinions on the defects in the patent application that did not conform to the provisions of the Patent Law and its detailed rules for implementation, requiring the applicant to modify its application documents.
3. China National Intellectual Property Administration made the amendment ex officio. The modification according to the authority shall meet the following conditions and requirements: