WIPO (World Intellectual Property Organization) [to 17 May 2014]
http://www.wipo.int/portal/en/index.html

WIPO Launches Unique Image-Based Search for Trademarks, Other Brand Information
The World Intellectual Property Organization (WIPO) has unveiled a one-of-a-kind image-search function for its Global Brand Database, adding a new feature that allows users to upload an image to search for visually similar trademark and other brand-information records from among the millions of images in the collection.
May 12, 2014 PR/2014/760