Core Viewpoint - The U.S. Department of Commerce has modified the rules regarding patent invalidation applications, particularly focusing on those submitted by foreign entities, which has raised concerns from China regarding discrimination against its companies [1] Group 1: Regulatory Changes - The U.S. Patent and Trademark Office has issued a memorandum to enhance the transparency of patent invalidation applications, specifically scrutinizing applications from foreign background companies [1] - Some Chinese companies have received notifications from the U.S. requiring them to justify their patent invalidation applications [1] Group 2: China's Response - China views the U.S. actions as a violation of international obligations related to intellectual property rights and as discriminatory restrictions against Chinese enterprises [1] - The Chinese government will closely monitor the situation and take necessary measures to protect the legitimate rights and interests of Chinese companies [1]