Taipei, Sept. 9 (CNA) Taiwan Semiconductor Manufacturing Co. (TSMC), the world's largest contract chipmaker, ranked as the largest invention patent applicant in Taiwan for the fourth consecutive year in 2022, according to the Ministry of Economic Affairs (MOEA). Statistics compiled by the MOEA's Intellectual Property Office showed TSMC filed 1,534 invention patent applications in 2022, down 21.3 percent from a year earlier but still continued to be the largest applicant in the country. Under Taiwan law, patents are categorized into three groups -- invention, utility model and design -- and invention patents are considered the most important in terms of new technology ideas.

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