Widespread copyright infringement on the internet has a serious impact on a range of businesses. Since activities on the internet cannot be conducted without using internet service providers (ISPs), these ISPs are at risk of being sued by copyright holders. Because this situation is unfavourable to the growth and development of the internet industry, and in an attempt to deter online copyright infringement, the Taiwan Intellectual Property Office (TIPO) drafted an amendment to the Copyright Act on February 14 2008 to specify the limitations on ISP liability. The amendment was passed by the legislative body on April 21 2009.