On November 18, 2025, a spokesperson for China's Ministry of Commerce addressed the recent move by the United States Patent and Trademark Office (USPTO). The USPTO has altered its transparency rules concerning patent invalidation applications, with a particular emphasis on closely examining applications submitted by enterprises with foreign affiliations. The spokesperson stated that China has taken note of the U.S.'s rule revisions, which are being implemented under the pretext of 'national security.' This action, the spokesperson emphasized, contravenes the U.S.'s international commitments regarding intellectual property rights and imposes discriminatory constraints on the lawful rights of Chinese enterprises. China will keep a close eye on the situation and is prepared to take necessary steps to firmly protect the legitimate rights and interests of its enterprises. It has been reported that certain Chinese companies have received notices from the U.S. authorities, demanding explanations for their patent invalidation applications.