The patent office has refused to entertain Facebook’s application for patent to the “method and apparatus for an application crawler” that is used to search the Web for files, including texts and videos. The Patent Office said that the invention was not allowed under the Section 15 of Indian Patents Act, 1970. The application was filed by Truveo Inc in 2007. This was later assigned to Facebook. Facebook Crawler fetches content, including text and video, from various websites and generates a preview for browsers.
— source thehindubusinessline.com | Mar 25, 2015